bug in order NaN x int (tests must ensure that NaN does not get

converted to integer)

bugs

@@ -1878,13 +1878,6 @@ for i=1,25 do print(i); crash(i) end
 patch = [[
 --- lundump.c   2008/04/04 16:00:45     2.7.1.3
 +++ lundump.c   2008/04/04 19:51:41     2.7.1.4
-@@ -1,5 +1,5 @@
- /*
--** $Id: bugs,v 1.132 2014/05/07 16:57:27 roberto Exp roberto $
-+** $Id: bugs,v 1.132 2014/05/07 16:57:27 roberto Exp roberto $
- ** load precompiled Lua chunks
- ** See Copyright Notice in lua.h
- */
 @@ -161,7 +161,9 @@
  
  static Proto* LoadFunction(LoadState* S, TString* p)
@@ -3220,6 +3213,26 @@ example = [[
 (segfaults on some platforms with some compiler options)
 ]],
 patch = [[
+--- ltablib.c	2013/04/12 18:48:47	1.65.1.1
++++ ltablib.c	2014/05/07 16:32:55	1.65.1.2
+@@ -134,13 +135,14 @@
+ 
+ 
+ static int unpack (lua_State *L) {
+-  int i, e, n;
++  int i, e;
++  unsigned int n;
+   luaL_checktype(L, 1, LUA_TTABLE);
+   i = luaL_optint(L, 2, 1);
+   e = luaL_opt(L, luaL_checkint, 3, luaL_len(L, 1));
+   if (i > e) return 0;  /* empty range */
+-  n = e - i + 1;  /* number of elements */
+-  if (n <= 0 || !lua_checkstack(L, n))  /* n <= 0 means arith. overflow */
++  n = (unsigned int)e - (unsigned int)i;  /* number of elements minus 1 */
++  if (n > (INT_MAX - 10) || !lua_checkstack(L, ++n))
+     return luaL_error(L, "too many results to unpack");
+   lua_rawgeti(L, 1, i);  /* push arg[i] (avoiding overflow problems) */
+   while (i++ < e)  /* push arg[i + 1...e] */
 ]]
 }
 
@@ -3248,6 +3261,200 @@ patch = [[
 ]]
 }
 
+Bug{
+what = [[Chunk with too many lines can seg. fault]],
+report = [[Roberto, 2014/11/14]],
+since = [[5.1 (at least)]],
+fix = nil,
+example = [[
+-- the cause of the bug is the use of an unitialized variable, so
+-- it cannot be reproduced reliably
+local s = string.rep("\n", 2^24)
+print(load(function () return s end))
+]],
+patch = [[
+--- llex.c	2013/08/30 15:49:41	2.63.1.2
++++ llex.c	2015/02/09 17:05:31
+@@ -153,5 +153,5 @@
+     next(ls);  /* skip `\n\r' or `\r\n' */
+   if (++ls->linenumber >= MAX_INT)
+-    luaX_syntaxerror(ls, "chunk has too many lines");
++    lexerror(ls, "chunk has too many lines", 0);
+ }
+ 
+]]
+}
+
+
+-----------------------------------------------------------------
+-- Lua 5.3.0
+
+Bug{
+what = [['string.format("%f")' can cause a buffer overflow
+(only when 'lua_Number' is long double!)]],
+report = [[Roberto, 2015/01/13]],
+since = [[5.3]],
+fix = nil,
+example = [[string.format("%.99f", 1e4000)    -- when floats are long double]],
+patch = [[
+--- lstrlib.c	2014/12/11 14:03:07	1.221
++++ lstrlib.c	2015/02/23 19:01:42
+@@ -800,3 +800,4 @@
+ /* maximum size of each formatted item (> len(format('%99.99f', -1e308))) */
+-#define MAX_ITEM	512
++#define MAX_ITEM  \
++  (sizeof(lua_Number) <= 4 ? 150 : sizeof(lua_Number) <= 8 ? 450 : 5050)
+ 
+]]
+}
+
+Bug{
+what = [['debug.getlocal' on a coroutine suspended in a hook
+can crash the interpreter]],
+report = [[云风, 2015/02/11]],
+since = [[5.2]],
+fix = nil,
+example = [[see http://lua-users.org/lists/lua-l/2015-02/msg00146.html]],
+patch = [[
+--- ldebug.c	2015/01/02 12:52:22	2.110
++++ ldebug.c	2015/02/13 16:03:23
+@@ -49,4 +49,14 @@
+ 
+ 
++static void swapextra (lua_State *L) {
++  if (L->status == LUA_YIELD) {
++    CallInfo *ci = L->ci;  /* get function that yielded */
++    StkId temp = ci->func;  /* exchange its 'func' and 'extra' values */
++    ci->func = restorestack(L, ci->extra);
++    ci->extra = savestack(L, temp);
++  }
++}
++
++
+ /*
+ ** this function can be called asynchronous (e.g. during a signal)
+@@ -145,4 +155,5 @@
+   const char *name;
+   lua_lock(L);
++  swapextra(L);
+   if (ar == NULL) {  /* information about non-active function? */
+     if (!isLfunction(L->top - 1))  /* not a Lua function? */
+@@ -159,4 +170,5 @@
+     }
+   }
++  swapextra(L);
+   lua_unlock(L);
+   return name;
+@@ -166,10 +178,13 @@
+ LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
+   StkId pos = 0;  /* to avoid warnings */
+-  const char *name = findlocal(L, ar->i_ci, n, &pos);
++  const char *name;
+   lua_lock(L);
++  swapextra(L);
++  name = findlocal(L, ar->i_ci, n, &pos);
+   if (name) {
+     setobjs2s(L, pos, L->top - 1);
+     L->top--;  /* pop value */
+   }
++  swapextra(L);
+   lua_unlock(L);
+   return name;
+@@ -271,4 +286,5 @@
+   StkId func;
+   lua_lock(L);
++  swapextra(L);
+   if (*what == '>') {
+     ci = NULL;
+@@ -289,4 +305,5 @@
+     api_incr_top(L);
+   }
++  swapextra(L);
+   if (strchr(what, 'L'))
+     collectvalidlines(L, cl);
+]]
+}
+
+
+Bug{
+what = [[suspended '__le' metamethod can give wrong result]],
+report = [[Eric Zhong, 2015/04/07]],
+since = [[5.2]],
+fix = nil,
+
+example = [[
+mt = {__le = function (a,b) coroutine.yield("yield"); return a.x <= b.x end}
+t1 = setmetatable({x=1}, mt)
+t2 = {x=2}
+co = coroutine.wrap(function (a,b) return t2 <= t1 end)
+co()
+print(co())   --> true  (should be false)
+]],
+
+patch = [[
+--- lstate.h	2014/10/30 18:53:28	2.119
++++ lstate.h	2015/04/13 15:58:40
+@@ -94,6 +94,7 @@
+ #define CIST_YPCALL	(1<<4)	/* call is a yieldable protected call */
+ #define CIST_TAIL	(1<<5)	/* call was tail called */
+ #define CIST_HOOKYIELD	(1<<6)	/* last hook called yielded */
++#define CIST_LEQ	(1<<7)  /* using __lt for __le */
+ 
+ #define isLua(ci)	((ci)->callstatus & CIST_LUA)
+ 
+--- lvm.c	2014/12/27 20:30:38	2.232
++++ lvm.c	2015/04/13 15:51:30
+@@ -292,9 +292,14 @@
+     return l_strcmp(tsvalue(l), tsvalue(r)) <= 0;
+   else if ((res = luaT_callorderTM(L, l, r, TM_LE)) >= 0)  /* first try 'le' */
+     return res;
+-  else if ((res = luaT_callorderTM(L, r, l, TM_LT)) < 0)  /* else try 'lt' */
+-    luaG_ordererror(L, l, r);
+-  return !res;
++  else {  /* try 'lt': */
++    L->ci->callstatus |= CIST_LEQ;  /* mark it is doing 'lt' for 'le' */
++    res = luaT_callorderTM(L, r, l, TM_LT);
++    L->ci->callstatus ^= CIST_LEQ;  /* clear mark */
++    if (res < 0)
++      luaG_ordererror(L, l, r);
++    return !res;  /* result is negated */
++  }
+ }
+ 
+ 
+@@ -553,11 +558,11 @@
+     case OP_LE: case OP_LT: case OP_EQ: {
+       int res = !l_isfalse(L->top - 1);
+       L->top--;
+-      /* metamethod should not be called when operand is K */
+-      lua_assert(!ISK(GETARG_B(inst)));
+-      if (op == OP_LE &&  /* "<=" using "<" instead? */
+-          ttisnil(luaT_gettmbyobj(L, base + GETARG_B(inst), TM_LE)))
+-        res = !res;  /* invert result */
++      if (ci->callstatus & CIST_LEQ) {  /* "<=" using "<" instead? */
++        lua_assert(op == OP_LE);
++        ci->callstatus ^= CIST_LEQ;  /* clear mark */
++        res = !res;  /* negate result */
++      }
+       lua_assert(GET_OPCODE(*ci->u.l.savedpc) == OP_JMP);
+       if (res != GETARG_A(inst))  /* condition failed? */
+         ci->u.l.savedpc++;  /* skip jump instruction */
+]]
+}
+
+
+Bug{
+what = [[return hook may not see correct values for
+ active local variables when function returns]],
+report = [[Philipp Janda/Peng Yi, 2015/05/19]],
+since = [[5.0]],
+fix = nil,
+example = [[
+see messasge http://lua-users.org/lists/lua-l/2015-05/msg00376.html]],
+patch = [[
+]]
+}
+
 
 --[=[
 Bug{
@@ -3260,3 +3467,5 @@ patch = [[
 ]]
 }
 ]=]
+
+

lapi.c

@@ -1,17 +1,18 @@
 /*
-** $Id: lapi.c,v 2.237 2014/10/15 14:27:40 roberto Exp roberto $
+** $Id: lapi.c,v 2.248 2015/03/28 19:14:47 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
 
-
-#include <math.h>
-#include <stdarg.h>
-#include <string.h>
-
 #define lapi_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <stdarg.h>
+#include <string.h>
+
 #include "lua.h"
 
 #include "lapi.h"
@@ -50,29 +51,29 @@ const char lua_ident[] =
 /* test for valid but not pseudo index */
 #define isstackindex(i, o)	(isvalid(o) && !ispseudo(i))
 
-#define api_checkvalidindex(o)  api_check(isvalid(o), "invalid index")
+#define api_checkvalidindex(l,o)  api_check(l, isvalid(o), "invalid index")
 
-#define api_checkstackindex(i, o)  \
+#define api_checkstackindex(l, i, o)  \
-	api_check(isstackindex(i, o), "index not in the stack")
+	api_check(l, isstackindex(i, o), "index not in the stack")
 
 
 static TValue *index2addr (lua_State *L, int idx) {
   CallInfo *ci = L->ci;
   if (idx > 0) {
     TValue *o = ci->func + idx;
-    api_check(idx <= ci->top - (ci->func + 1), "unacceptable index");
+    api_check(L, idx <= ci->top - (ci->func + 1), "unacceptable index");
     if (o >= L->top) return NONVALIDVALUE;
     else return o;
   }
   else if (!ispseudo(idx)) {  /* negative index */
-    api_check(idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index");
+    api_check(L, idx != 0 && -idx <= L->top - (ci->func + 1), "invalid index");
     return L->top + idx;
   }
   else if (idx == LUA_REGISTRYINDEX)
     return &G(L)->l_registry;
   else {  /* upvalues */
     idx = LUA_REGISTRYINDEX - idx;
-    api_check(idx <= MAXUPVAL + 1, "upvalue index too large");
+    api_check(L, idx <= MAXUPVAL + 1, "upvalue index too large");
     if (ttislcf(ci->func))  /* light C function? */
       return NONVALIDVALUE;  /* it has no upvalues */
     else {
@@ -93,22 +94,22 @@ static void growstack (lua_State *L, void *ud) {
 }
 
 
-LUA_API int lua_checkstack (lua_State *L, int size) {
+LUA_API int lua_checkstack (lua_State *L, int n) {
   int res;
   CallInfo *ci = L->ci;
   lua_lock(L);
-  api_check(size >= 0, "negative 'size'");
+  api_check(L, n >= 0, "negative 'n'");
-  if (L->stack_last - L->top > size)  /* stack large enough? */
+  if (L->stack_last - L->top > n)  /* stack large enough? */
     res = 1;  /* yes; check is OK */
   else {  /* no; need to grow stack */
     int inuse = cast_int(L->top - L->stack) + EXTRA_STACK;
-    if (inuse > LUAI_MAXSTACK - size)  /* can grow without overflow? */
+    if (inuse > LUAI_MAXSTACK - n)  /* can grow without overflow? */
       res = 0;  /* no */
     else  /* try to grow stack */
-      res = (luaD_rawrunprotected(L, &growstack, &size) == LUA_OK);
+      res = (luaD_rawrunprotected(L, &growstack, &n) == LUA_OK);
   }
-  if (res && ci->top < L->top + size)
+  if (res && ci->top < L->top + n)
-    ci->top = L->top + size;  /* adjust frame top */
+    ci->top = L->top + n;  /* adjust frame top */
   lua_unlock(L);
   return res;
 }
@@ -119,11 +120,12 @@ LUA_API void lua_xmove (lua_State *from, lua_State *to, int n) {
   if (from == to) return;
   lua_lock(to);
   api_checknelems(from, n);
-  api_check(G(from) == G(to), "moving among independent states");
+  api_check(from, G(from) == G(to), "moving among independent states");
-  api_check(to->ci->top - to->top >= n, "not enough elements to move");
+  api_check(from, to->ci->top - to->top >= n, "not enough elements to move");
   from->top -= n;
   for (i = 0; i < n; i++) {
-    setobj2s(to, to->top++, from->top + i);
+    setobj2s(to, to->top, from->top + i);
+    api_incr_top(to);
   }
   lua_unlock(to);
 }
@@ -158,7 +160,7 @@ LUA_API const lua_Number *lua_version (lua_State *L) {
 LUA_API int lua_absindex (lua_State *L, int idx) {
   return (idx > 0 || ispseudo(idx))
          ? idx
-         : cast_int(L->top - L->ci->func + idx);
+         : cast_int(L->top - L->ci->func) + idx;
 }
 
 
@@ -171,14 +173,14 @@ LUA_API void lua_settop (lua_State *L, int idx) {
   StkId func = L->ci->func;
   lua_lock(L);
   if (idx >= 0) {
-    api_check(idx <= L->stack_last - (func + 1), "new top too large");
+    api_check(L, idx <= L->stack_last - (func + 1), "new top too large");
     while (L->top < (func + 1) + idx)
       setnilvalue(L->top++);
     L->top = (func + 1) + idx;
   }
   else {
-    api_check(-(idx+1) <= (L->top - (func + 1)), "invalid new top");
+    api_check(L, -(idx+1) <= (L->top - (func + 1)), "invalid new top");
-    L->top += idx+1;  /* `subtract' index (index is negative) */
+    L->top += idx+1;  /* 'subtract' index (index is negative) */
   }
   lua_unlock(L);
 }
@@ -207,8 +209,8 @@ LUA_API void lua_rotate (lua_State *L, int idx, int n) {
   lua_lock(L);
   t = L->top - 1;  /* end of stack segment being rotated */
   p = index2addr(L, idx);  /* start of segment */
-  api_checkstackindex(idx, p);
+  api_checkstackindex(L, idx, p);
-  api_check((n >= 0 ? n : -n) <= (t - p + 1), "invalid 'n'");
+  api_check(L, (n >= 0 ? n : -n) <= (t - p + 1), "invalid 'n'");
   m = (n >= 0 ? t - n : p - n - 1);  /* end of prefix */
   reverse(L, p, m);  /* reverse the prefix with length 'n' */
   reverse(L, m + 1, t);  /* reverse the suffix */
@@ -222,7 +224,7 @@ LUA_API void lua_copy (lua_State *L, int fromidx, int toidx) {
   lua_lock(L);
   fr = index2addr(L, fromidx);
   to = index2addr(L, toidx);
-  api_checkvalidindex(to);
+  api_checkvalidindex(L, to);
   setobj(L, to, fr);
   if (isupvalue(toidx))  /* function upvalue? */
     luaC_barrier(L, clCvalue(L->ci->func), fr);
@@ -254,7 +256,7 @@ LUA_API int lua_type (lua_State *L, int idx) {
 
 LUA_API const char *lua_typename (lua_State *L, int t) {
   UNUSED(L);
-  api_check(LUA_TNONE <= t && t < LUA_NUMTAGS, "invalid tag");
+  api_check(L, LUA_TNONE <= t && t < LUA_NUMTAGS, "invalid tag");
   return ttypename(t);
 }
 
@@ -304,7 +306,7 @@ LUA_API void lua_arith (lua_State *L, int op) {
   else {  /* for unary operations, add fake 2nd operand */
     api_checknelems(L, 1);
     setobjs2s(L, L->top, L->top - 1);
-    L->top++;
+    api_incr_top(L);
   }
   /* first operand at top - 2, second at top - 1; result go to top - 2 */
   luaO_arith(L, op, L->top - 2, L->top - 1, L->top - 2);
@@ -324,7 +326,7 @@ LUA_API int lua_compare (lua_State *L, int index1, int index2, int op) {
       case LUA_OPEQ: i = luaV_equalobj(L, o1, o2); break;
       case LUA_OPLT: i = luaV_lessthan(L, o1, o2); break;
       case LUA_OPLE: i = luaV_lessequal(L, o1, o2); break;
-      default: api_check(0, "invalid option");
+      default: api_check(L, 0, "invalid option");
     }
   }
   lua_unlock(L);
@@ -375,21 +377,23 @@ LUA_API const char *lua_tolstring (lua_State *L, int idx, size_t *len) {
       if (len != NULL) *len = 0;
       return NULL;
     }
-    lua_lock(L);  /* `luaO_tostring' may create a new string */
+    lua_lock(L);  /* 'luaO_tostring' may create a new string */
     luaC_checkGC(L);
     o = index2addr(L, idx);  /* previous call may reallocate the stack */
     luaO_tostring(L, o);
     lua_unlock(L);
   }
-  if (len != NULL) *len = tsvalue(o)->len;
+  if (len != NULL)
+    *len = vslen(o);
   return svalue(o);
 }
 
 
 LUA_API size_t lua_rawlen (lua_State *L, int idx) {
   StkId o = index2addr(L, idx);
-  switch (ttnov(o)) {
+  switch (ttype(o)) {
-    case LUA_TSTRING: return tsvalue(o)->len;
+    case LUA_TSHRSTR: return tsvalue(o)->shrlen;
+    case LUA_TLNGSTR: return tsvalue(o)->u.lnglen;
     case LUA_TUSERDATA: return uvalue(o)->len;
     case LUA_TTABLE: return luaH_getn(hvalue(o));
     default: return 0;
@@ -430,9 +434,8 @@ LUA_API const void *lua_topointer (lua_State *L, int idx) {
     case LUA_TCCL: return clCvalue(o);
     case LUA_TLCF: return cast(void *, cast(size_t, fvalue(o)));
     case LUA_TTHREAD: return thvalue(o);
-    case LUA_TUSERDATA:
+    case LUA_TUSERDATA: return getudatamem(uvalue(o));
-    case LUA_TLIGHTUSERDATA:
+    case LUA_TLIGHTUSERDATA: return pvalue(o);
-      return lua_touserdata(L, idx);
     default: return NULL;
   }
 }
@@ -481,20 +484,19 @@ LUA_API const char *lua_pushlstring (lua_State *L, const char *s, size_t len) {
 
 
 LUA_API const char *lua_pushstring (lua_State *L, const char *s) {
-  if (s == NULL) {
+  lua_lock(L);
-    lua_pushnil(L);
+  if (s == NULL)
-    return NULL;
+    setnilvalue(L->top);
-  }
   else {
     TString *ts;
-    lua_lock(L);
     luaC_checkGC(L);
     ts = luaS_new(L, s);
     setsvalue2s(L, L->top, ts);
-    api_incr_top(L);
+    s = getstr(ts);  /* internal copy's address */
-    lua_unlock(L);
-    return getstr(ts);
   }
+  api_incr_top(L);
+  lua_unlock(L);
+  return s;
 }
 
 
@@ -530,7 +532,7 @@ LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) {
   else {
     CClosure *cl;
     api_checknelems(L, n);
-    api_check(n <= MAXUPVAL, "upvalue index too large");
+    api_check(L, n <= MAXUPVAL, "upvalue index too large");
     luaC_checkGC(L);
     cl = luaF_newCclosure(L, n);
     cl->f = fn;
@@ -577,12 +579,13 @@ LUA_API int lua_pushthread (lua_State *L) {
 */
 
 
-LUA_API int lua_getglobal (lua_State *L, const char *var) {
+LUA_API int lua_getglobal (lua_State *L, const char *name) {
   Table *reg = hvalue(&G(L)->l_registry);
   const TValue *gt;  /* global table */
   lua_lock(L);
   gt = luaH_getint(reg, LUA_RIDX_GLOBALS);
-  setsvalue2s(L, L->top++, luaS_new(L, var));
+  setsvalue2s(L, L->top, luaS_new(L, name));
+  api_incr_top(L);
   luaV_gettable(L, gt, L->top - 1, L->top - 1);
   lua_unlock(L);
   return ttnov(L->top - 1);
@@ -627,7 +630,7 @@ LUA_API int lua_rawget (lua_State *L, int idx) {
   StkId t;
   lua_lock(L);
   t = index2addr(L, idx);
-  api_check(ttistable(t), "table expected");
+  api_check(L, ttistable(t), "table expected");
   setobj2s(L, L->top - 1, luaH_get(hvalue(t), L->top - 1));
   lua_unlock(L);
   return ttnov(L->top - 1);
@@ -638,7 +641,7 @@ LUA_API int lua_rawgeti (lua_State *L, int idx, lua_Integer n) {
   StkId t;
   lua_lock(L);
   t = index2addr(L, idx);
-  api_check(ttistable(t), "table expected");
+  api_check(L, ttistable(t), "table expected");
   setobj2s(L, L->top, luaH_getint(hvalue(t), n));
   api_incr_top(L);
   lua_unlock(L);
@@ -651,7 +654,7 @@ LUA_API int lua_rawgetp (lua_State *L, int idx, const void *p) {
   TValue k;
   lua_lock(L);
   t = index2addr(L, idx);
-  api_check(ttistable(t), "table expected");
+  api_check(L, ttistable(t), "table expected");
   setpvalue(&k, cast(void *, p));
   setobj2s(L, L->top, luaH_get(hvalue(t), &k));
   api_incr_top(L);
@@ -675,7 +678,7 @@ LUA_API void lua_createtable (lua_State *L, int narray, int nrec) {
 
 LUA_API int lua_getmetatable (lua_State *L, int objindex) {
   const TValue *obj;
-  Table *mt = NULL;
+  Table *mt;
   int res = 0;
   lua_lock(L);
   obj = index2addr(L, objindex);
@@ -704,7 +707,7 @@ LUA_API int lua_getuservalue (lua_State *L, int idx) {
   StkId o;
   lua_lock(L);
   o = index2addr(L, idx);
-  api_check(ttisfulluserdata(o), "full userdata expected");
+  api_check(L, ttisfulluserdata(o), "full userdata expected");
   getuservalue(L, uvalue(o), L->top);
   api_incr_top(L);
   lua_unlock(L);
@@ -717,13 +720,14 @@ LUA_API int lua_getuservalue (lua_State *L, int idx) {
 */
 
 
-LUA_API void lua_setglobal (lua_State *L, const char *var) {
+LUA_API void lua_setglobal (lua_State *L, const char *name) {
   Table *reg = hvalue(&G(L)->l_registry);
   const TValue *gt;  /* global table */
   lua_lock(L);
   api_checknelems(L, 1);
   gt = luaH_getint(reg, LUA_RIDX_GLOBALS);
-  setsvalue2s(L, L->top++, luaS_new(L, var));
+  setsvalue2s(L, L->top, luaS_new(L, name));
+  api_incr_top(L);
   luaV_settable(L, gt, L->top - 1, L->top - 2);
   L->top -= 2;  /* pop value and key */
   lua_unlock(L);
@@ -746,7 +750,8 @@ LUA_API void lua_setfield (lua_State *L, int idx, const char *k) {
   lua_lock(L);
   api_checknelems(L, 1);
   t = index2addr(L, idx);
-  setsvalue2s(L, L->top++, luaS_new(L, k));
+  setsvalue2s(L, L->top, luaS_new(L, k));
+  api_incr_top(L);
   luaV_settable(L, t, L->top - 1, L->top - 2);
   L->top -= 2;  /* pop value and key */
   lua_unlock(L);
@@ -758,7 +763,8 @@ LUA_API void lua_seti (lua_State *L, int idx, lua_Integer n) {
   lua_lock(L);
   api_checknelems(L, 1);
   t = index2addr(L, idx);
-  setivalue(L->top++, n);
+  setivalue(L->top, n);
+  api_incr_top(L);
   luaV_settable(L, t, L->top - 1, L->top - 2);
   L->top -= 2;  /* pop value and key */
   lua_unlock(L);
@@ -771,7 +777,7 @@ LUA_API void lua_rawset (lua_State *L, int idx) {
   lua_lock(L);
   api_checknelems(L, 2);
   o = index2addr(L, idx);
-  api_check(ttistable(o), "table expected");
+  api_check(L, ttistable(o), "table expected");
   t = hvalue(o);
   setobj2t(L, luaH_set(L, t, L->top-2), L->top-1);
   invalidateTMcache(t);
@@ -787,7 +793,7 @@ LUA_API void lua_rawseti (lua_State *L, int idx, lua_Integer n) {
   lua_lock(L);
   api_checknelems(L, 1);
   o = index2addr(L, idx);
-  api_check(ttistable(o), "table expected");
+  api_check(L, ttistable(o), "table expected");
   t = hvalue(o);
   luaH_setint(L, t, n, L->top - 1);
   luaC_barrierback(L, t, L->top-1);
@@ -803,7 +809,7 @@ LUA_API void lua_rawsetp (lua_State *L, int idx, const void *p) {
   lua_lock(L);
   api_checknelems(L, 1);
   o = index2addr(L, idx);
-  api_check(ttistable(o), "table expected");
+  api_check(L, ttistable(o), "table expected");
   t = hvalue(o);
   setpvalue(&k, cast(void *, p));
   setobj2t(L, luaH_set(L, t, &k), L->top - 1);
@@ -822,7 +828,7 @@ LUA_API int lua_setmetatable (lua_State *L, int objindex) {
   if (ttisnil(L->top - 1))
     mt = NULL;
   else {
-    api_check(ttistable(L->top - 1), "table expected");
+    api_check(L, ttistable(L->top - 1), "table expected");
     mt = hvalue(L->top - 1);
   }
   switch (ttnov(obj)) {
@@ -858,7 +864,7 @@ LUA_API void lua_setuservalue (lua_State *L, int idx) {
   lua_lock(L);
   api_checknelems(L, 1);
   o = index2addr(L, idx);
-  api_check(ttisfulluserdata(o), "full userdata expected");
+  api_check(L, ttisfulluserdata(o), "full userdata expected");
   setuservalue(L, uvalue(o), L->top - 1);
   luaC_barrier(L, gcvalue(o), L->top - 1);
   L->top--;
@@ -867,12 +873,12 @@ LUA_API void lua_setuservalue (lua_State *L, int idx) {
 
 
 /*
-** `load' and `call' functions (run Lua code)
+** 'load' and 'call' functions (run Lua code)
 */
 
 
 #define checkresults(L,na,nr) \
-     api_check((nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \
+     api_check(L, (nr) == LUA_MULTRET || (L->ci->top - L->top >= (nr) - (na)), \
 	"results from function overflow current stack size")
 
 
@@ -880,10 +886,10 @@ LUA_API void lua_callk (lua_State *L, int nargs, int nresults,
                         lua_KContext ctx, lua_KFunction k) {
   StkId func;
   lua_lock(L);
-  api_check(k == NULL || !isLua(L->ci),
+  api_check(L, k == NULL || !isLua(L->ci),
     "cannot use continuations inside hooks");
   api_checknelems(L, nargs+1);
-  api_check(L->status == LUA_OK, "cannot do calls on non-normal thread");
+  api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread");
   checkresults(L, nargs, nresults);
   func = L->top - (nargs+1);
   if (k != NULL && L->nny == 0) {  /* need to prepare continuation? */
@@ -902,7 +908,7 @@ LUA_API void lua_callk (lua_State *L, int nargs, int nresults,
 /*
 ** Execute a protected call.
 */
-struct CallS {  /* data to `f_call' */
+struct CallS {  /* data to 'f_call' */
   StkId func;
   int nresults;
 };
@@ -921,16 +927,16 @@ LUA_API int lua_pcallk (lua_State *L, int nargs, int nresults, int errfunc,
   int status;
   ptrdiff_t func;
   lua_lock(L);
-  api_check(k == NULL || !isLua(L->ci),
+  api_check(L, k == NULL || !isLua(L->ci),
     "cannot use continuations inside hooks");
   api_checknelems(L, nargs+1);
-  api_check(L->status == LUA_OK, "cannot do calls on non-normal thread");
+  api_check(L, L->status == LUA_OK, "cannot do calls on non-normal thread");
   checkresults(L, nargs, nresults);
   if (errfunc == 0)
     func = 0;
   else {
     StkId o = index2addr(L, errfunc);
-    api_checkstackindex(errfunc, o);
+    api_checkstackindex(L, errfunc, o);
     func = savestack(L, o);
   }
   c.func = L->top - (nargs+1);  /* function to be called */
@@ -969,7 +975,7 @@ LUA_API int lua_load (lua_State *L, lua_Reader reader, void *data,
   status = luaD_protectedparser(L, &z, chunkname, mode);
   if (status == LUA_OK) {  /* no errors? */
     LClosure *f = clLvalue(L->top - 1);  /* get newly created function */
-    if (f->nupvalues == 1) {  /* does it have one upvalue? */
+    if (f->nupvalues >= 1) {  /* does it have an upvalue? */
       /* get global table from registry */
       Table *reg = hvalue(&G(L)->l_registry);
       const TValue *gt = luaH_getint(reg, LUA_RIDX_GLOBALS);
@@ -1095,7 +1101,7 @@ LUA_API int lua_next (lua_State *L, int idx) {
   int more;
   lua_lock(L);
   t = index2addr(L, idx);
-  api_check(ttistable(t), "table expected");
+  api_check(L, ttistable(t), "table expected");
   more = luaH_next(L, hvalue(t), L->top - 1);
   if (more) {
     api_incr_top(L);
@@ -1227,9 +1233,9 @@ LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n) {
 static UpVal **getupvalref (lua_State *L, int fidx, int n, LClosure **pf) {
   LClosure *f;
   StkId fi = index2addr(L, fidx);
-  api_check(ttisLclosure(fi), "Lua function expected");
+  api_check(L, ttisLclosure(fi), "Lua function expected");
   f = clLvalue(fi);
-  api_check((1 <= n && n <= f->p->sizeupvalues), "invalid upvalue index");
+  api_check(L, (1 <= n && n <= f->p->sizeupvalues), "invalid upvalue index");
   if (pf) *pf = f;
   return &f->upvals[n - 1];  /* get its upvalue pointer */
 }
@@ -1243,11 +1249,11 @@ LUA_API void *lua_upvalueid (lua_State *L, int fidx, int n) {
     }
     case LUA_TCCL: {  /* C closure */
       CClosure *f = clCvalue(fi);
-      api_check(1 <= n && n <= f->nupvalues, "invalid upvalue index");
+      api_check(L, 1 <= n && n <= f->nupvalues, "invalid upvalue index");
       return &f->upvalue[n - 1];
     }
     default: {
-      api_check(0, "closure expected");
+      api_check(L, 0, "closure expected");
       return NULL;
     }
   }

lapi.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.h,v 2.7 2009/11/27 15:37:59 roberto Exp roberto $
+** $Id: lapi.h,v 2.8 2014/07/15 21:26:50 roberto Exp roberto $
 ** Auxiliary functions from Lua API
 ** See Copyright Notice in lua.h
 */
@@ -11,13 +11,13 @@
 #include "llimits.h"
 #include "lstate.h"
 
-#define api_incr_top(L)   {L->top++; api_check(L->top <= L->ci->top, \
+#define api_incr_top(L)   {L->top++; api_check(L, L->top <= L->ci->top, \
 				"stack overflow");}
 
 #define adjustresults(L,nres) \
     { if ((nres) == LUA_MULTRET && L->ci->top < L->top) L->ci->top = L->top; }
 
-#define api_checknelems(L,n)	api_check((n) < (L->top - L->ci->func), \
+#define api_checknelems(L,n)	api_check(L, (n) < (L->top - L->ci->func), \
 				  "not enough elements in the stack")
 
 

lauxlib.c

@@ -1,9 +1,14 @@
 /*
-** $Id: lauxlib.c,v 1.269 2014/10/17 16:28:21 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.279 2014/12/14 18:32:26 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
 
+#define lauxlib_c
+#define LUA_LIB
+
+#include "lprefix.h"
+
 
 #include <errno.h>
 #include <stdarg.h>
@@ -16,9 +21,6 @@
 ** Any function declared here could be written as an application function.
 */
 
-#define lauxlib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -64,11 +66,20 @@ static int findfield (lua_State *L, int objidx, int level) {
 }
 
 
+/*
+** Search for a name for a function in all loaded modules
+** (registry._LOADED).
+*/
 static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
   int top = lua_gettop(L);
   lua_getinfo(L, "f", ar);  /* push function */
-  lua_pushglobaltable(L);
+  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
   if (findfield(L, top + 1, 2)) {
+    const char *name = lua_tostring(L, -1);
+    if (strncmp(name, "_G.", 3) == 0) {  /* name start with '_G.'? */
+      lua_pushstring(L, name + 3);  /* push name without prefix */
+      lua_remove(L, -2);  /* remove original name */
+    }
     lua_copy(L, -1, top + 1);  /* move name to proper place */
     lua_pop(L, 2);  /* remove pushed values */
     return 1;
@@ -81,20 +92,18 @@ static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
 
 
 static void pushfuncname (lua_State *L, lua_Debug *ar) {
-  if (*ar->namewhat != '\0')  /* is there a name? */
+  if (pushglobalfuncname(L, ar)) {  /* try first a global name */
-    lua_pushfstring(L, "function '%s'", ar->name);
+    lua_pushfstring(L, "function '%s'", lua_tostring(L, -1));
+    lua_remove(L, -2);  /* remove name */
+  }
+  else if (*ar->namewhat != '\0')  /* is there a name from code? */
+    lua_pushfstring(L, "%s '%s'", ar->namewhat, ar->name);  /* use it */
   else if (*ar->what == 'm')  /* main? */
       lua_pushliteral(L, "main chunk");
-  else if (*ar->what == 'C') {
+  else if (*ar->what != 'C')  /* for Lua functions, use <file:line> */
-    if (pushglobalfuncname(L, ar)) {
-      lua_pushfstring(L, "function '%s'", lua_tostring(L, -1));
-      lua_remove(L, -2);  /* remove name */
-    }
-    else
-      lua_pushliteral(L, "?");
-  }
-  else
     lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
+  else  /* nothing left... */
+    lua_pushliteral(L, "?");
 }
 
 
@@ -156,7 +165,7 @@ LUALIB_API int luaL_argerror (lua_State *L, int arg, const char *extramsg) {
     return luaL_error(L, "bad argument #%d (%s)", arg, extramsg);
   lua_getinfo(L, "n", &ar);
   if (strcmp(ar.namewhat, "method") == 0) {
-    arg--;  /* do not count `self' */
+    arg--;  /* do not count 'self' */
     if (arg == 0)  /* error is in the self argument itself? */
       return luaL_error(L, "calling '%s' on bad self (%s)",
                            ar.name, extramsg);
@@ -277,8 +286,7 @@ LUALIB_API int luaL_execresult (lua_State *L, int stat) {
 */
 
 LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) {
-  luaL_getmetatable(L, tname);  /* try to get metatable */
+  if (luaL_getmetatable(L, tname) != LUA_TNIL)  /* name already in use? */
-  if (!lua_isnil(L, -1))  /* name already in use? */
     return 0;  /* leave previous value on top, but return 0 */
   lua_pop(L, 1);
   lua_newtable(L);  /* create metatable */
@@ -526,7 +534,7 @@ LUALIB_API int luaL_ref (lua_State *L, int t) {
   int ref;
   if (lua_isnil(L, -1)) {
     lua_pop(L, 1);  /* remove from stack */
-    return LUA_REFNIL;  /* `nil' has a unique fixed reference */
+    return LUA_REFNIL;  /* 'nil' has a unique fixed reference */
   }
   t = lua_absindex(L, t);
   lua_rawgeti(L, t, freelist);  /* get first free element */
@@ -565,7 +573,7 @@ LUALIB_API void luaL_unref (lua_State *L, int t, int ref) {
 typedef struct LoadF {
   int n;  /* number of pre-read characters */
   FILE *f;  /* file being read */
-  char buff[LUAL_BUFFERSIZE];  /* area for reading file */
+  char buff[BUFSIZ];  /* area for reading file */
 } LoadF;
 
 
@@ -658,7 +666,7 @@ LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename,
   readstatus = ferror(lf.f);
   if (filename) fclose(lf.f);  /* close file (even in case of errors) */
   if (readstatus) {
-    lua_settop(L, fnameindex);  /* ignore results from `lua_load' */
+    lua_settop(L, fnameindex);  /* ignore results from 'lua_load' */
     return errfile(L, "read", fnameindex);
   }
   lua_remove(L, fnameindex);
@@ -918,7 +926,7 @@ LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p,
   while ((wild = strstr(s, p)) != NULL) {
     luaL_addlstring(&b, s, wild - s);  /* push prefix */
     luaL_addstring(&b, r);  /* push replacement in place of pattern */
-    s = wild + l;  /* continue after `p' */
+    s = wild + l;  /* continue after 'p' */
   }
   luaL_addstring(&b, s);  /* push last suffix */
   luaL_pushresult(&b);
@@ -938,8 +946,8 @@ static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
 
 
 static int panic (lua_State *L) {
-  luai_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n",
+  lua_writestringerror("PANIC: unprotected error in call to Lua API (%s)\n",
-                   lua_tostring(L, -1));
+                        lua_tostring(L, -1));
   return 0;  /* return to Lua to abort */
 }
 

lauxlib.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.h,v 1.125 2014/06/26 17:25:11 roberto Exp roberto $
+** $Id: lauxlib.h,v 1.127 2014/10/25 11:50:46 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -16,7 +16,7 @@
 
 
 
-/* extra error code for `luaL_load' */
+/* extra error code for 'luaL_load' */
 #define LUA_ERRFILE     (LUA_ERRERR+1)
 
 
@@ -204,6 +204,31 @@ LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
 #endif
 
 
+/*
+** {==================================================================
+** "Abstraction Layer" for basic report of messages and errors
+** ===================================================================
+*/
+
+/* print a string */
+#if !defined(lua_writestring)
+#define lua_writestring(s,l)   fwrite((s), sizeof(char), (l), stdout)
+#endif
+
+/* print a newline and flush the output */
+#if !defined(lua_writeline)
+#define lua_writeline()        (lua_writestring("\n", 1), fflush(stdout))
+#endif
+
+/* print an error message */
+#if !defined(lua_writestringerror)
+#define lua_writestringerror(s,p) \
+        (fprintf(stderr, (s), (p)), fflush(stderr))
+#endif
+
+/* }================================================================== */
+
+
 /*
 ** {============================================================
 ** Compatibility with deprecated conversions

lbaselib.c

@@ -1,9 +1,13 @@
 /*
-** $Id: lbaselib.c,v 1.302 2014/10/17 16:28:21 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.309 2014/12/10 12:26:42 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
 
+#define lbaselib_c
+#define LUA_LIB
+
+#include "lprefix.h"
 
 
 #include <ctype.h>
@@ -11,9 +15,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define lbaselib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -33,11 +34,11 @@ static int luaB_print (lua_State *L) {
     s = lua_tolstring(L, -1, &l);  /* get result */
     if (s == NULL)
       return luaL_error(L, "'tostring' must return a string to 'print'");
-    if (i>1) luai_writestring("\t", 1);
+    if (i>1) lua_writestring("\t", 1);
-    luai_writestring(s, l);
+    lua_writestring(s, l);
     lua_pop(L, 1);  /* pop result */
   }
-  luai_writeline();
+  lua_writeline();
   return 0;
 }
 
@@ -54,14 +55,12 @@ static const char *b_str2int (const char *s, int base, lua_Integer *pn) {
     return NULL;
   do {
     int digit = (isdigit((unsigned char)*s)) ? *s - '0'
-                   : toupper((unsigned char)*s) - 'A' + 10;
+                   : (toupper((unsigned char)*s) - 'A') + 10;
     if (digit >= base) return NULL;  /* invalid numeral */
     n = n * base + digit;
     s++;
   } while (isalnum((unsigned char)*s));
   s += strspn(s, SPACECHARS);  /* skip trailing spaces */
-  if (*s != '\0')  /* invalid trailing characters? */
-    return NULL;
   *pn = (lua_Integer)((neg) ? (0u - n) : n);
   return s;
 }
@@ -275,6 +274,7 @@ static int luaB_ipairs (lua_State *L) {
 #if defined(LUA_COMPAT_IPAIRS)
   return pairsmeta(L, "__ipairs", 1, iter);
 #else
+  luaL_checkany(L, 1);
   lua_pushcfunction(L, iter);  /* iteration function */
   lua_pushvalue(L, 1);  /* state */
   lua_pushinteger(L, 0);  /* initial value */
@@ -325,7 +325,7 @@ static int luaB_loadfile (lua_State *L) {
 
 
 /*
-** Reader for generic `load' function: `lua_load' uses the
+** Reader for generic 'load' function: 'lua_load' uses the
 ** stack for internal stuff, so the reader cannot change the
 ** stack top. Instead, it keeps its resulting string in a
 ** reserved slot inside the stack.
@@ -389,9 +389,10 @@ static int luaB_assert (lua_State *L) {
   if (lua_toboolean(L, 1))  /* condition is true? */
     return lua_gettop(L);  /* return all arguments */
   else {  /* error */
-    if (lua_isnone(L, 2))  /* no error message? */
+    luaL_checkany(L, 1);  /* there must be a condition */
-      lua_pushliteral(L, "assertion failed!");  /* use standard message */
+    lua_remove(L, 1);  /* remove it */
-    lua_remove(L, 1);  /* remove the condition (if there is one...) */
+    lua_pushliteral(L, "assertion failed!");  /* default message */
+    lua_settop(L, 1);  /* leave only message (default if no other one) */
     return luaB_error(L);  /* call 'error' */
   }
 }

lbitlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lbitlib.c,v 1.26 2014/05/15 19:28:34 roberto Exp roberto $
+** $Id: lbitlib.c,v 1.27 2014/10/01 11:54:56 roberto Exp roberto $
 ** Standard library for bitwise operations
 ** See Copyright Notice in lua.h
 */
@@ -7,6 +7,9 @@
 #define lbitlib_c
 #define LUA_LIB
 
+#include "lprefix.h"
+
+
 #include "lua.h"
 
 #include "lauxlib.h"

lcode.c

@@ -1,16 +1,18 @@
 /*
-** $Id: lcode.c,v 2.89 2014/04/29 18:14:16 roberto Exp roberto $
+** $Id: lcode.c,v 2.100 2015/03/28 19:14:47 roberto Exp roberto $
 ** Code generator for Lua
 ** See Copyright Notice in lua.h
 */
 
+#define lcode_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
 
 #include <math.h>
 #include <stdlib.h>
 
-#define lcode_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "lcode.h"
@@ -27,12 +29,8 @@
 #include "lvm.h"
 
 
-/* test for x == -0 */
+/* Maximum number of registers in a Lua function (must fit in 8 bits) */
-#if defined(signbit)
+#define MAXREGS		255
-#define isminuszero(x)	((x) == 0.0 && signbit(x))
-#else
-#define isminuszero(x)	((x) == 0.0 && 1.0/(x) < 0.0)
-#endif
 
 
 #define hasjumps(e)	((e)->t != (e)->f)
@@ -107,7 +105,7 @@ static void fixjump (FuncState *fs, int pc, int dest) {
 
 
 /*
-** returns current `pc' and marks it as a jump target (to avoid wrong
+** returns current 'pc' and marks it as a jump target (to avoid wrong
 ** optimizations with consecutive instructions not in the same basic block).
 */
 int luaK_getlabel (FuncState *fs) {
@@ -230,7 +228,7 @@ void luaK_concat (FuncState *fs, int *l1, int l2) {
 
 static int luaK_code (FuncState *fs, Instruction i) {
   Proto *f = fs->f;
-  dischargejpc(fs);  /* `pc' will change */
+  dischargejpc(fs);  /* 'pc' will change */
   /* put new instruction in code array */
   luaM_growvector(fs->ls->L, f->code, fs->pc, f->sizecode, Instruction,
                   MAX_INT, "opcodes");
@@ -280,8 +278,9 @@ int luaK_codek (FuncState *fs, int reg, int k) {
 void luaK_checkstack (FuncState *fs, int n) {
   int newstack = fs->freereg + n;
   if (newstack > fs->f->maxstacksize) {
-    if (newstack >= MAXSTACK)
+    if (newstack >= MAXREGS)
-      luaX_syntaxerror(fs->ls, "function or expression too complex");
+      luaX_syntaxerror(fs->ls,
+        "function or expression needs too many registers");
     fs->f->maxstacksize = cast_byte(newstack);
   }
 }
@@ -358,14 +357,8 @@ int luaK_intK (FuncState *fs, lua_Integer n) {
 }
 
 
-/*
-** Both NaN and -0.0 should not go to the constant table, as they have
-** problems with the hashing. (NaN is not a valid key, -0.0 collides
-** with +0.0.)
-*/ 
 static int luaK_numberK (FuncState *fs, lua_Number r) {
   TValue o;
-  lua_assert(!luai_numisnan(r) && !isminuszero(r));
   setfltvalue(&o, r);
   return addk(fs, &o, &o);
 }
@@ -503,7 +496,7 @@ static void discharge2anyreg (FuncState *fs, expdesc *e) {
 static void exp2reg (FuncState *fs, expdesc *e, int reg) {
   discharge2reg(fs, e, reg);
   if (e->k == VJMP)
-    luaK_concat(fs, &e->t, e->u.info);  /* put this jump in `t' list */
+    luaK_concat(fs, &e->t, e->u.info);  /* put this jump in 't' list */
   if (hasjumps(e)) {
     int final;  /* position after whole expression */
     int p_f = NO_JUMP;  /* position of an eventual LOAD false */
@@ -581,11 +574,11 @@ int luaK_exp2RK (FuncState *fs, expdesc *e) {
     case VKFLT: {
       e->u.info = luaK_numberK(fs, e->u.nval);
       e->k = VK;
-      /* go through */
     }
+    /* FALLTHROUGH */
     case VK: {
      vk:
-      if (e->u.info <= MAXINDEXRK)  /* constant fits in argC? */
+      if (e->u.info <= MAXINDEXRK)  /* constant fits in 'argC'? */
         return RKASK(e->u.info);
       else break;
     }
@@ -677,7 +670,7 @@ void luaK_goiftrue (FuncState *fs, expdesc *e) {
       break;
     }
   }
-  luaK_concat(fs, &e->f, pc);  /* insert last jump in `f' list */
+  luaK_concat(fs, &e->f, pc);  /* insert last jump in 'f' list */
   luaK_patchtohere(fs, e->t);
   e->t = NO_JUMP;
 }
@@ -700,7 +693,7 @@ void luaK_goiffalse (FuncState *fs, expdesc *e) {
       break;
     }
   }
-  luaK_concat(fs, &e->t, pc);  /* insert last jump in `t' list */
+  luaK_concat(fs, &e->t, pc);  /* insert last jump in 't' list */
   luaK_patchtohere(fs, e->f);
   e->f = NO_JUMP;
 }
@@ -755,20 +748,14 @@ void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) {
 ** return false if folding can raise an error
 */
 static int validop (int op, TValue *v1, TValue *v2) {
-  lua_Number a, b;
-  lua_Integer i;
-  cast_void(a); cast_void(b);  /* macro may not use its arguments */
-  if (luai_numinvalidop(op, (cast_void(tonumber(v1, &a)), a),
-                            (cast_void(tonumber(v2, &b)), b)))
-    return 0;
   switch (op) {
-    case LUA_OPIDIV:  /* division by 0 and conversion errors */
-      return (tointeger(v1, &i) && tointeger(v2, &i) && i != 0);
     case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
-    case LUA_OPSHL: case LUA_OPSHR: case LUA_OPBNOT:  /* conversion errors */
+    case LUA_OPSHL: case LUA_OPSHR: case LUA_OPBNOT: {  /* conversion errors */
+      lua_Integer i;
       return (tointeger(v1, &i) && tointeger(v2, &i));
-    case LUA_OPMOD:  /* integer module by 0 */
+    }
-      return !(ttisinteger(v1) && ttisinteger(v2) && ivalue(v2) == 0);
+    case LUA_OPDIV: case LUA_OPIDIV: case LUA_OPMOD:  /* division by 0 */
+      return (nvalue(v2) != 0);
     default: return 1;  /* everything else is valid */
   }
 }
@@ -781,15 +768,15 @@ static int constfolding (FuncState *fs, int op, expdesc *e1, expdesc *e2) {
   TValue v1, v2, res;
   if (!tonumeral(e1, &v1) || !tonumeral(e2, &v2) || !validop(op, &v1, &v2))
     return 0;  /* non-numeric operands or not safe to fold */
-  luaO_arith(fs->ls->L, op, &v1, &v2, &res);
+  luaO_arith(fs->ls->L, op, &v1, &v2, &res);  /* does operation */
   if (ttisinteger(&res)) {
     e1->k = VKINT;
     e1->u.ival = ivalue(&res);
   }
-  else {
+  else {  /* folds neither NaN nor 0.0 (to avoid collapsing with -0.0) */
     lua_Number n = fltvalue(&res);
-    if (luai_numisnan(n) || isminuszero(n))
+    if (luai_numisnan(n) || n == 0)
-      return 0;  /* folds neither NaN nor -0 */
+      return 0;
     e1->k = VKFLT;
     e1->u.nval = n;
   }
@@ -797,19 +784,30 @@ static int constfolding (FuncState *fs, int op, expdesc *e1, expdesc *e2) {
 }
 
 
-static void codearith (FuncState *fs, OpCode op,
+/*
-                       expdesc *e1, expdesc *e2, int line) {
+** Code for binary and unary expressions that "produce values"
-  if (!constfolding(fs, op - OP_ADD + LUA_OPADD, e1, e2)) {
+** (arithmetic operations, bitwise operations, concat, length). First
+** try to do constant folding (only for numeric [arithmetic and
+** bitwise] operations, which is what 'lua_arith' accepts).
+** Expression to produce final result will be encoded in 'e1'.
+*/
+static void codeexpval (FuncState *fs, OpCode op,
+                        expdesc *e1, expdesc *e2, int line) {
+  lua_assert(op >= OP_ADD);
+  if (op <= OP_BNOT && constfolding(fs, (op - OP_ADD) + LUA_OPADD, e1, e2))
+    return;  /* result has been folded */
+  else {
     int o1, o2;
-    if (op == OP_UNM || op == OP_BNOT || op == OP_LEN) {
+    /* move operands to registers (if needed) */
-      o2 = 0;
+    if (op == OP_UNM || op == OP_BNOT || op == OP_LEN) {  /* unary op? */
+      o2 = 0;  /* no second expression */
       o1 = luaK_exp2anyreg(fs, e1);  /* cannot operate on constants */
     }
     else {  /* regular case (binary operators) */
-      o2 = luaK_exp2RK(fs, e2);
+      o2 = luaK_exp2RK(fs, e2);  /* both operands are "RK" */
       o1 = luaK_exp2RK(fs, e1);
     }
-    if (o1 > o2) {
+    if (o1 > o2) {  /* free registers in proper order */
       freeexp(fs, e1);
       freeexp(fs, e2);
     }
@@ -817,8 +815,8 @@ static void codearith (FuncState *fs, OpCode op,
       freeexp(fs, e2);
       freeexp(fs, e1);
     }
-    e1->u.info = luaK_codeABC(fs, op, 0, o1, o2);
+    e1->u.info = luaK_codeABC(fs, op, 0, o1, o2);  /* generate opcode */
-    e1->k = VRELOCABLE;
+    e1->k = VRELOCABLE;  /* all those operations are relocable */
     luaK_fixline(fs, line);
   }
 }
@@ -831,7 +829,7 @@ static void codecomp (FuncState *fs, OpCode op, int cond, expdesc *e1,
   freeexp(fs, e2);
   freeexp(fs, e1);
   if (cond == 0 && op != OP_EQ) {
-    int temp;  /* exchange args to replace by `<' or `<=' */
+    int temp;  /* exchange args to replace by '<' or '<=' */
     temp = o1; o1 = o2; o2 = temp;  /* o1 <==> o2 */
     cond = 1;
   }
@@ -845,7 +843,7 @@ void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e, int line) {
   e2.t = e2.f = NO_JUMP; e2.k = VKINT; e2.u.ival = 0;
   switch (op) {
     case OPR_MINUS: case OPR_BNOT: case OPR_LEN: {
-      codearith(fs, cast(OpCode, (op - OPR_MINUS) + OP_UNM), e, &e2, line);
+      codeexpval(fs, cast(OpCode, (op - OPR_MINUS) + OP_UNM), e, &e2, line);
       break;
     }
     case OPR_NOT: codenot(fs, e); break;
@@ -865,7 +863,7 @@ void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) {
       break;
     }
     case OPR_CONCAT: {
-      luaK_exp2nextreg(fs, v);  /* operand must be on the `stack' */
+      luaK_exp2nextreg(fs, v);  /* operand must be on the 'stack' */
       break;
     }
     case OPR_ADD: case OPR_SUB:
@@ -911,7 +909,7 @@ void luaK_posfix (FuncState *fs, BinOpr op,
       }
       else {
         luaK_exp2nextreg(fs, e2);  /* operand must be on the 'stack' */
-        codearith(fs, OP_CONCAT, e1, e2, line);
+        codeexpval(fs, OP_CONCAT, e1, e2, line);
       }
       break;
     }
@@ -919,15 +917,15 @@ void luaK_posfix (FuncState *fs, BinOpr op,
     case OPR_IDIV: case OPR_MOD: case OPR_POW:
     case OPR_BAND: case OPR_BOR: case OPR_BXOR:
     case OPR_SHL: case OPR_SHR: {
-      codearith(fs, cast(OpCode, (op - OPR_ADD) + OP_ADD), e1, e2, line);
+      codeexpval(fs, cast(OpCode, (op - OPR_ADD) + OP_ADD), e1, e2, line);
       break;
     }
     case OPR_EQ: case OPR_LT: case OPR_LE: {
-      codecomp(fs, cast(OpCode, op - OPR_EQ + OP_EQ), 1, e1, e2);
+      codecomp(fs, cast(OpCode, (op - OPR_EQ) + OP_EQ), 1, e1, e2);
       break;
     }
     case OPR_NE: case OPR_GT: case OPR_GE: {
-      codecomp(fs, cast(OpCode, op - OPR_NE + OP_EQ), 0, e1, e2);
+      codecomp(fs, cast(OpCode, (op - OPR_NE) + OP_EQ), 0, e1, e2);
       break;
     }
     default: lua_assert(0);

lcorolib.c

@@ -1,16 +1,17 @@
 /*
-** $Id: lcorolib.c,v 1.6 2014/05/08 13:52:20 roberto Exp roberto $
+** $Id: lcorolib.c,v 1.8 2014/10/25 11:50:46 roberto Exp roberto $
 ** Coroutine Library
 ** See Copyright Notice in lua.h
 */
 
-
-#include <stdlib.h>
-
-
 #define lcorolib_c
 #define LUA_LIB
 
+#include "lprefix.h"
+
+
+#include <stdlib.h>
+
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -65,7 +66,7 @@ static int luaB_coresume (lua_State *L) {
   else {
     lua_pushboolean(L, 1);
     lua_insert(L, -(r + 1));
-    return r + 1;  /* return true + `resume' returns */
+    return r + 1;  /* return true + 'resume' returns */
   }
 }
 

lctype.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lctype.c,v 1.10 2011/06/24 12:25:33 roberto Exp roberto $
+** $Id: lctype.c,v 1.11 2011/10/03 16:19:23 roberto Exp roberto $
 ** 'ctype' functions for Lua
 ** See Copyright Notice in lua.h
 */
@@ -7,6 +7,9 @@
 #define lctype_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
 #include "lctype.h"
 
 #if !LUA_USE_CTYPE	/* { */

ldblib.c

@@ -1,24 +1,41 @@
 /*
-** $Id: ldblib.c,v 1.142 2014/10/01 11:54:56 roberto Exp roberto $
+** $Id: ldblib.c,v 1.148 2015/01/02 12:52:22 roberto Exp roberto $
 ** Interface from Lua to its debug API
 ** See Copyright Notice in lua.h
 */
 
+#define ldblib_c
+#define LUA_LIB
+
+#include "lprefix.h"
+
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define ldblib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
 #include "lualib.h"
 
 
-#define HOOKKEY		"_HKEY"
+/*
+** The hook table at registry[&HOOKKEY] maps threads to their current
+** hook function. (We only need the unique address of 'HOOKKEY'.)
+*/
+static const int HOOKKEY = 0;
+
+
+/*
+** If L1 != L, L1 can be in any state, and therefore there is no
+** garanties about its stack space; any push in L1 must be
+** checked.
+*/
+static void checkstack (lua_State *L, lua_State *L1, int n) {
+  if (L != L1 && !lua_checkstack(L1, n))
+    luaL_error(L, "stack overflow");
+}
 
 
 static int db_getregistry (lua_State *L) {
@@ -121,12 +138,16 @@ static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
 
 /*
 ** Calls 'lua_getinfo' and collects all results in a new table.
+** L1 needs stack space for an optional input (function) plus
+** two optional outputs (function and line table) from function
+** 'lua_getinfo'.
 */
 static int db_getinfo (lua_State *L) {
   lua_Debug ar;
   int arg;
   lua_State *L1 = getthread(L, &arg);
   const char *options = luaL_optstring(L, arg+2, "flnStu");
+  checkstack(L, L1, 3);
   if (lua_isfunction(L, arg + 1)) {  /* info about a function? */
     options = lua_pushfstring(L, ">%s", options);  /* add '>' to 'options' */
     lua_pushvalue(L, arg + 1);  /* move function to 'L1' stack */
@@ -184,6 +205,7 @@ static int db_getlocal (lua_State *L) {
     int level = (int)luaL_checkinteger(L, arg + 1);
     if (!lua_getstack(L1, level, &ar))  /* out of range? */
       return luaL_argerror(L, arg+1, "level out of range");
+    checkstack(L, L1, 1);
     name = lua_getlocal(L1, &ar, nvar);
     if (name) {
       lua_xmove(L1, L, 1);  /* move local value */
@@ -201,15 +223,21 @@ static int db_getlocal (lua_State *L) {
 
 static int db_setlocal (lua_State *L) {
   int arg;
+  const char *name;
   lua_State *L1 = getthread(L, &arg);
   lua_Debug ar;
   int level = (int)luaL_checkinteger(L, arg + 1);
+  int nvar = (int)luaL_checkinteger(L, arg + 2);
   if (!lua_getstack(L1, level, &ar))  /* out of range? */
     return luaL_argerror(L, arg+1, "level out of range");
   luaL_checkany(L, arg+3);
   lua_settop(L, arg+3);
+  checkstack(L, L1, 1);
   lua_xmove(L, L1, 1);
-  lua_pushstring(L, lua_setlocal(L1, &ar, (int)luaL_checkinteger(L, arg+2)));
+  name = lua_setlocal(L1, &ar, nvar);
+  if (name == NULL)
+    lua_pop(L1, 1);  /* pop value (if not popped by 'lua_setlocal') */
+  lua_pushstring(L, name);
   return 1;
 }
 
@@ -270,13 +298,6 @@ static int db_upvaluejoin (lua_State *L) {
 }
 
 
-/*
-** The hook table (at registry[HOOKKEY]) maps threads to their current
-** hook function
-*/
-#define gethooktable(L)	luaL_getsubtable(L, LUA_REGISTRYINDEX, HOOKKEY)
-
-
 /*
 ** Call hook function registered at hook table for the current
 ** thread (if there is one)
@@ -284,7 +305,7 @@ static int db_upvaluejoin (lua_State *L) {
 static void hookf (lua_State *L, lua_Debug *ar) {
   static const char *const hooknames[] =
     {"call", "return", "line", "count", "tail call"};
-  gethooktable(L);
+  lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
   lua_pushthread(L);
   if (lua_rawget(L, -2) == LUA_TFUNCTION) {  /* is there a hook function? */
     lua_pushstring(L, hooknames[(int)ar->event]);  /* push event name */
@@ -337,16 +358,20 @@ static int db_sethook (lua_State *L) {
     count = (int)luaL_optinteger(L, arg + 3, 0);
     func = hookf; mask = makemask(smask, count);
   }
-  if (gethooktable(L) == 0) {  /* creating hook table? */
+  if (lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY) == LUA_TNIL) {
+    lua_createtable(L, 0, 2);  /* create a hook table */
+    lua_pushvalue(L, -1);
+    lua_rawsetp(L, LUA_REGISTRYINDEX, &HOOKKEY);  /* set it in position */
     lua_pushstring(L, "k");
     lua_setfield(L, -2, "__mode");  /** hooktable.__mode = "k" */
     lua_pushvalue(L, -1);
     lua_setmetatable(L, -2);  /* setmetatable(hooktable) = hooktable */
   }
-  lua_pushthread(L1); lua_xmove(L1, L, 1);  /* key */
+  checkstack(L, L1, 1);
-  lua_pushvalue(L, arg+1);  /* value */
+  lua_pushthread(L1); lua_xmove(L1, L, 1);  /* key (thread) */
+  lua_pushvalue(L, arg + 1);  /* value (hook function) */
   lua_rawset(L, -3);  /* hooktable[L1] = new Lua hook */
-  lua_sethook(L1, func, mask, count);  /* set hooks */
+  lua_sethook(L1, func, mask, count);
   return 0;
 }
 
@@ -357,10 +382,13 @@ static int db_gethook (lua_State *L) {
   char buff[5];
   int mask = lua_gethookmask(L1);
   lua_Hook hook = lua_gethook(L1);
-  if (hook != NULL && hook != hookf)  /* external hook? */
+  if (hook == NULL)  /* no hook? */
+    lua_pushnil(L);
+  else if (hook != hookf)  /* external hook? */
     lua_pushliteral(L, "external hook");
-  else {
+  else {  /* hook table must exist */
-    gethooktable(L);
+    lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
+    checkstack(L, L1, 1);
     lua_pushthread(L1); lua_xmove(L1, L, 1);
     lua_rawget(L, -2);   /* 1st result = hooktable[L1] */
     lua_remove(L, -2);  /* remove hook table */
@@ -374,13 +402,13 @@ static int db_gethook (lua_State *L) {
 static int db_debug (lua_State *L) {
   for (;;) {
     char buffer[250];
-    luai_writestringerror("%s", "lua_debug> ");
+    lua_writestringerror("%s", "lua_debug> ");
     if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
         strcmp(buffer, "cont\n") == 0)
       return 0;
     if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
         lua_pcall(L, 0, 0, 0))
-      luai_writestringerror("%s\n", lua_tostring(L, -1));
+      lua_writestringerror("%s\n", lua_tostring(L, -1));
     lua_settop(L, 0);  /* remove eventual returns */
   }
 }

ldebug.c

@@ -1,18 +1,19 @@
 /*
-** $Id: ldebug.c,v 2.100 2014/07/30 14:00:14 roberto Exp roberto $
+** $Id: ldebug.c,v 2.114 2015/03/28 19:14:47 roberto Exp roberto $
 ** Debug Interface
 ** See Copyright Notice in lua.h
 */
 
+#define ldebug_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
 
 #include <stdarg.h>
 #include <stddef.h>
 #include <string.h>
 
-
-#define ldebug_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "lapi.h"
@@ -33,6 +34,10 @@
 #define noLuaClosure(f)		((f) == NULL || (f)->c.tt == LUA_TCCL)
 
 
+/* Active Lua function (given call info) */
+#define ci_func(ci)		(clLvalue((ci)->func))
+
+
 static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name);
 
 
@@ -47,6 +52,22 @@ static int currentline (CallInfo *ci) {
 }
 
 
+/*
+** If function yielded, its 'func' can be in the 'extra' field. The
+** next function restores 'func' to its correct value for debugging
+** purposes. (It exchanges 'func' and 'extra'; so, when called again,
+** after debugging, it also "re-restores" ** 'func' to its altered value.
+*/
+static void swapextra (lua_State *L) {
+  if (L->status == LUA_YIELD) {
+    CallInfo *ci = L->ci;  /* get function that yielded */
+    StkId temp = ci->func;  /* exchange its 'func' and 'extra' values */
+    ci->func = restorestack(L, ci->extra);
+    ci->extra = savestack(L, temp);
+  }
+}
+
+
 /*
 ** this function can be called asynchronous (e.g. during a signal)
 */
@@ -105,7 +126,7 @@ static const char *upvalname (Proto *p, int uv) {
 
 static const char *findvararg (CallInfo *ci, int n, StkId *pos) {
   int nparams = clLvalue(ci->func)->p->numparams;
-  if (n >= ci->u.l.base - ci->func - nparams)
+  if (n >= cast_int(ci->u.l.base - ci->func) - nparams)
     return NULL;  /* no such vararg */
   else {
     *pos = ci->func + nparams + n;
@@ -143,6 +164,7 @@ static const char *findlocal (lua_State *L, CallInfo *ci, int n,
 LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
   const char *name;
   lua_lock(L);
+  swapextra(L);
   if (ar == NULL) {  /* information about non-active function? */
     if (!isLfunction(L->top - 1))  /* not a Lua function? */
       name = NULL;
@@ -150,25 +172,30 @@ LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
       name = luaF_getlocalname(clLvalue(L->top - 1)->p, n, 0);
   }
   else {  /* active function; get information through 'ar' */
-    StkId pos = 0;  /* to avoid warnings */
+    StkId pos = NULL;  /* to avoid warnings */
     name = findlocal(L, ar->i_ci, n, &pos);
     if (name) {
       setobj2s(L, L->top, pos);
       api_incr_top(L);
     }
   }
+  swapextra(L);
   lua_unlock(L);
   return name;
 }
 
 
 LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
-  StkId pos = 0;  /* to avoid warnings */
+  StkId pos = NULL;  /* to avoid warnings */
-  const char *name = findlocal(L, ar->i_ci, n, &pos);
+  const char *name;
   lua_lock(L);
-  if (name)
+  swapextra(L);
+  name = findlocal(L, ar->i_ci, n, &pos);
+  if (name) {
     setobjs2s(L, pos, L->top - 1);
-  L->top--;  /* pop value */
+    L->top--;  /* pop value */
+  }
+  swapextra(L);
   lua_unlock(L);
   return name;
 }
@@ -268,10 +295,11 @@ LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
   CallInfo *ci;
   StkId func;
   lua_lock(L);
+  swapextra(L);
   if (*what == '>') {
     ci = NULL;
     func = L->top - 1;
-    api_check(ttisfunction(func), "function expected");
+    api_check(L, ttisfunction(func), "function expected");
     what++;  /* skip the '>' */
     L->top--;  /* pop function */
   }
@@ -286,6 +314,7 @@ LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
     setobjs2s(L, L->top, func);
     api_incr_top(L);
   }
+  swapextra(L);  /* correct before option 'L', which can raise a mem. error */
   if (strchr(what, 'L'))
     collectvalidlines(L, cl);
   lua_unlock(L);
@@ -365,7 +394,7 @@ static int findsetreg (Proto *p, int lastpc, int reg) {
       case OP_JMP: {
         int b = GETARG_sBx(i);
         int dest = pc + 1 + b;
-        /* jump is forward and do not skip `lastpc'? */
+        /* jump is forward and do not skip 'lastpc'? */
         if (pc < dest && dest <= lastpc) {
           if (dest > jmptarget)
             jmptarget = dest;  /* update 'jmptarget' */
@@ -437,10 +466,14 @@ static const char *getobjname (Proto *p, int lastpc, int reg,
 
 
 static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
-  TMS tm;
+  TMS tm = (TMS)0;  /* to avoid warnings */
   Proto *p = ci_func(ci)->p;  /* calling function */
   int pc = currentpc(ci);  /* calling instruction index */
   Instruction i = p->code[pc];  /* calling instruction */
+  if (ci->callstatus & CIST_HOOKED) {  /* was it called inside a hook? */
+    *name = "?";
+    return "hook";
+  }
   switch (GET_OPCODE(i)) {
     case OP_CALL:
     case OP_TAILCALL:  /* get function name */
@@ -450,26 +483,27 @@ static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
        return "for iterator";
     }
     /* all other instructions can call only through metamethods */
-    case OP_SELF:
+    case OP_SELF: case OP_GETTABUP: case OP_GETTABLE:
-    case OP_GETTABUP:
+      tm = TM_INDEX;
-    case OP_GETTABLE: tm = TM_INDEX; break;
+      break;
-    case OP_SETTABUP:
+    case OP_SETTABUP: case OP_SETTABLE:
-    case OP_SETTABLE: tm = TM_NEWINDEX; break;
+      tm = TM_NEWINDEX;
-    case OP_EQ: tm = TM_EQ; break;
+      break;
-    case OP_ADD: tm = TM_ADD; break;
+    case OP_ADD: case OP_SUB: case OP_MUL: case OP_MOD:
-    case OP_SUB: tm = TM_SUB; break;
+    case OP_POW: case OP_DIV: case OP_IDIV: case OP_BAND:
-    case OP_MUL: tm = TM_MUL; break;
+    case OP_BOR: case OP_BXOR: case OP_SHL: case OP_SHR: {
-    case OP_DIV: tm = TM_DIV; break;
+      int offset = cast_int(GET_OPCODE(i)) - cast_int(OP_ADD);  /* ORDER OP */
-    case OP_IDIV: tm = TM_IDIV; break;
+      tm = cast(TMS, offset + cast_int(TM_ADD));  /* ORDER TM */
-    case OP_MOD: tm = TM_MOD; break;
+      break;
-    case OP_POW: tm = TM_POW; break;
+    }
     case OP_UNM: tm = TM_UNM; break;
+    case OP_BNOT: tm = TM_BNOT; break;
     case OP_LEN: tm = TM_LEN; break;
+    case OP_CONCAT: tm = TM_CONCAT; break;
+    case OP_EQ: tm = TM_EQ; break;
     case OP_LT: tm = TM_LT; break;
     case OP_LE: tm = TM_LE; break;
-    case OP_CONCAT: tm = TM_CONCAT; break;
+    default: lua_assert(0);  /* other instructions cannot call a function */
-    default:
-      return NULL;  /* else no useful name can be found */
   }
   *name = getstr(G(L)->tmname[tm]);
   return "metamethod";
@@ -480,17 +514,21 @@ static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
 
 
 /*
-** only ANSI way to check whether a pointer points to an array
+** The subtraction of two potentially unrelated pointers is
-** (used only for error messages, so efficiency is not a big concern)
+** not ISO C, but it should not crash a program; the subsequent
+** checks are ISO C and ensure a correct result.
 */
 static int isinstack (CallInfo *ci, const TValue *o) {
-  StkId p;
+  ptrdiff_t i = o - ci->u.l.base;
-  for (p = ci->u.l.base; p < ci->top; p++)
+  return (0 <= i && i < (ci->top - ci->u.l.base) && ci->u.l.base + i == o);
-    if (o == p) return 1;
-  return 0;
 }
 
 
+/*
+** Checks whether value 'o' came from an upvalue. (That can only happen
+** with instructions OP_GETTABUP/OP_SETTABUP, which operate directly on
+** upvalues.)
+*/
 static const char *getupvalname (CallInfo *ci, const TValue *o,
                                  const char **name) {
   LClosure *c = ci_func(ci);
@@ -506,7 +544,7 @@ static const char *getupvalname (CallInfo *ci, const TValue *o,
 
 
 static const char *varinfo (lua_State *L, const TValue *o) {
-  const char *name;
+  const char *name = NULL;  /* to avoid warnings */
   CallInfo *ci = L->ci;
   const char *kind = NULL;
   if (isLua(ci)) {
@@ -531,11 +569,12 @@ l_noret luaG_concaterror (lua_State *L, const TValue *p1, const TValue *p2) {
 }
 
 
-l_noret luaG_aritherror (lua_State *L, const TValue *p1, const TValue *p2) {
+l_noret luaG_opinterror (lua_State *L, const TValue *p1,
+                         const TValue *p2, const char *msg) {
   lua_Number temp;
   if (!tonumber(p1, &temp))  /* first operand is wrong? */
     p2 = p1;  /* now second is wrong */
-  luaG_typeerror(L, p2, "perform arithmetic on");
+  luaG_typeerror(L, p2, msg);
 }
 
 
@@ -560,29 +599,25 @@ l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
 }
 
 
-static void addinfo (lua_State *L, const char *msg) {
+/* add src:line information to 'msg' */
-  CallInfo *ci = L->ci;
+const char *luaG_addinfo (lua_State *L, const char *msg, TString *src,
-  if (isLua(ci)) {  /* is Lua code? */
+                                        int line) {
-    char buff[LUA_IDSIZE];  /* add file:line information */
+  char buff[LUA_IDSIZE];
-    int line = currentline(ci);
+  if (src)
-    TString *src = ci_func(ci)->p->source;
+    luaO_chunkid(buff, getstr(src), LUA_IDSIZE);
-    if (src)
+  else {  /* no source available; use "?" instead */
-      luaO_chunkid(buff, getstr(src), LUA_IDSIZE);
+    buff[0] = '?'; buff[1] = '\0';
-    else {  /* no source available; use "?" instead */
-      buff[0] = '?'; buff[1] = '\0';
-    }
-    luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
   }
+  return luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
 }
 
 
 l_noret luaG_errormsg (lua_State *L) {
   if (L->errfunc != 0) {  /* is there an error handling function? */
     StkId errfunc = restorestack(L, L->errfunc);
-    if (!ttisfunction(errfunc)) luaD_throw(L, LUA_ERRERR);
     setobjs2s(L, L->top, L->top - 1);  /* move argument */
     setobjs2s(L, L->top - 1, errfunc);  /* push function */
-    L->top++;
+    L->top++;  /* assume EXTRA_STACK */
     luaD_call(L, L->top - 2, 1, 0);  /* call it */
   }
   luaD_throw(L, LUA_ERRRUN);
@@ -590,10 +625,14 @@ l_noret luaG_errormsg (lua_State *L) {
 
 
 l_noret luaG_runerror (lua_State *L, const char *fmt, ...) {
+  CallInfo *ci = L->ci;
+  const char *msg;
   va_list argp;
   va_start(argp, fmt);
-  addinfo(L, luaO_pushvfstring(L, fmt, argp));
+  msg = luaO_pushvfstring(L, fmt, argp);  /* format message */
   va_end(argp);
+  if (isLua(ci))  /* if Lua function, add source:line information */
+    luaG_addinfo(L, msg, ci_func(ci)->p->source, currentline(ci));
   luaG_errormsg(L);
 }
 

ldebug.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ldebug.h,v 2.10 2013/05/06 17:19:11 roberto Exp roberto $
+** $Id: ldebug.h,v 2.13 2015/03/11 16:10:41 roberto Exp roberto $
 ** Auxiliary functions from Debug Interface module
 ** See Copyright Notice in lua.h
 */
@@ -17,21 +17,21 @@
 
 #define resethookcount(L)	(L->hookcount = L->basehookcount)
 
-/* Active Lua function (given call info) */
-#define ci_func(ci)		(clLvalue((ci)->func))
-
 
 LUAI_FUNC l_noret luaG_typeerror (lua_State *L, const TValue *o,
                                                 const char *opname);
 LUAI_FUNC l_noret luaG_concaterror (lua_State *L, const TValue *p1,
                                                   const TValue *p2);
-LUAI_FUNC l_noret luaG_aritherror (lua_State *L, const TValue *p1,
+LUAI_FUNC l_noret luaG_opinterror (lua_State *L, const TValue *p1,
-                                                 const TValue *p2);
+                                                 const TValue *p2,
+                                                 const char *msg);
 LUAI_FUNC l_noret luaG_tointerror (lua_State *L, const TValue *p1,
                                                  const TValue *p2);
 LUAI_FUNC l_noret luaG_ordererror (lua_State *L, const TValue *p1,
                                                  const TValue *p2);
 LUAI_FUNC l_noret luaG_runerror (lua_State *L, const char *fmt, ...);
+LUAI_FUNC const char *luaG_addinfo (lua_State *L, const char *msg,
+                                                  TString *src, int line);
 LUAI_FUNC l_noret luaG_errormsg (lua_State *L);
 LUAI_FUNC void luaG_traceexec (lua_State *L);
 

ldo.c

@@ -1,17 +1,19 @@
 /*
-** $Id: ldo.c,v 2.129 2014/10/08 12:20:26 roberto Exp roberto $
+** $Id: ldo.c,v 2.137 2015/03/30 16:05:23 roberto Exp roberto $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
 
+#define ldo_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
 
 #include <setjmp.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define ldo_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "lapi.h"
@@ -67,7 +69,7 @@
 
 #else							/* }{ */
 
-/* ANSI handling with long jumps */
+/* ISO C handling with long jumps */
 #define LUAI_THROW(L,c)		longjmp((c)->b, 1)
 #define LUAI_TRY(L,c,a)		if (setjmp((c)->b) == 0) { a }
 #define luai_jmpbuf		jmp_buf
@@ -119,8 +121,11 @@ l_noret luaD_throw (lua_State *L, int errcode) {
     }
     else {  /* no handler at all; abort */
       if (g->panic) {  /* panic function? */
+        seterrorobj(L, errcode, L->top);  /* assume EXTRA_STACK */
+        if (L->ci->top < L->top)
+          L->ci->top = L->top;  /* pushing msg. can break this invariant */
         lua_unlock(L);
-        g->panic(L);  /* call it (last chance to jump out) */
+        g->panic(L);  /* call panic function (last chance to jump out) */
       }
       abort();
     }
@@ -281,18 +286,21 @@ static StkId adjust_varargs (lua_State *L, Proto *p, int actual) {
 }
 
 
-static StkId tryfuncTM (lua_State *L, StkId func) {
+/*
+** Check whether __call metafield of 'func' is a function. If so, put
+** it in stack below original 'func' so that 'luaD_precall' can call
+** it. Raise an error if __call metafield is not a function.
+*/
+static void tryfuncTM (lua_State *L, StkId func) {
   const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL);
   StkId p;
-  ptrdiff_t funcr = savestack(L, func);
   if (!ttisfunction(tm))
     luaG_typeerror(L, func, "call");
-  /* Open a hole inside the stack at `func' */
+  /* Open a hole inside the stack at 'func' */
-  for (p = L->top; p > func; p--) setobjs2s(L, p, p-1);
+  for (p = L->top; p > func; p--)
-  incr_top(L);
+    setobjs2s(L, p, p-1);
-  func = restorestack(L, funcr);  /* previous call may change stack */
+  L->top++;  /* slot ensured by caller */
   setobj2s(L, func, tm);  /* tag method is the new function to be called */
-  return func;
 }
 
 
@@ -315,6 +323,7 @@ int luaD_precall (lua_State *L, StkId func, int nresults) {
     case LUA_TCCL: {  /* C closure */
       f = clCvalue(func)->f;
      Cfunc:
+      luaC_checkGC(L);  /* stack grow uses memory */
       luaD_checkstack(L, LUA_MINSTACK);  /* ensure minimum stack size */
       ci = next_ci(L);  /* now 'enter' new function */
       ci->nresults = nresults;
@@ -322,20 +331,20 @@ int luaD_precall (lua_State *L, StkId func, int nresults) {
       ci->top = L->top + LUA_MINSTACK;
       lua_assert(ci->top <= L->stack_last);
       ci->callstatus = 0;
-      luaC_checkGC(L);  /* stack grow uses memory */
       if (L->hookmask & LUA_MASKCALL)
         luaD_hook(L, LUA_HOOKCALL, -1);
       lua_unlock(L);
       n = (*f)(L);  /* do the actual call */
       lua_lock(L);
       api_checknelems(L, n);
-      luaD_poscall(L, L->top - n);
+      luaD_poscall(L, L->top - n, n);
       return 1;
     }
     case LUA_TLCL: {  /* Lua function: prepare its call */
       StkId base;
       Proto *p = clLvalue(func)->p;
       n = cast_int(L->top - func) - 1;  /* number of real arguments */
+      luaC_checkGC(L);  /* stack grow uses memory */
       luaD_checkstack(L, p->maxstacksize);
       for (; n < p->numparams; n++)
         setnilvalue(L->top++);  /* complete missing arguments */
@@ -356,20 +365,21 @@ int luaD_precall (lua_State *L, StkId func, int nresults) {
       ci->u.l.savedpc = p->code;  /* starting point */
       ci->callstatus = CIST_LUA;
       L->top = ci->top;
-      luaC_checkGC(L);  /* stack grow uses memory */
       if (L->hookmask & LUA_MASKCALL)
         callhook(L, ci);
       return 0;
     }
     default: {  /* not a function */
-      func = tryfuncTM(L, func);  /* retry with 'function' tag method */
+      luaD_checkstack(L, 1);  /* ensure space for metamethod */
+      func = restorestack(L, funcr);  /* previous call may change stack */
+      tryfuncTM(L, func);  /* try to get '__call' metamethod */
       return luaD_precall(L, func, nresults);  /* now it must be a function */
     }
   }
 }
 
 
-int luaD_poscall (lua_State *L, StkId firstResult) {
+int luaD_poscall (lua_State *L, StkId firstResult, int nres) {
   StkId res;
   int wanted, i;
   CallInfo *ci = L->ci;
@@ -383,9 +393,9 @@ int luaD_poscall (lua_State *L, StkId firstResult) {
   }
   res = ci->func;  /* res == final position of 1st result */
   wanted = ci->nresults;
-  L->ci = ci = ci->previous;  /* back to caller */
+  L->ci = ci->previous;  /* back to caller */
   /* move results to correct place */
-  for (i = wanted; i != 0 && firstResult < L->top; i--)
+  for (i = wanted; i != 0 && nres-- > 0; i--)
     setobjs2s(L, res++, firstResult++);
   while (i-- > 0)
     setnilvalue(res++);
@@ -439,7 +449,7 @@ static void finishCcall (lua_State *L, int status) {
   lua_lock(L);
   api_checknelems(L, n);
   /* finish 'luaD_precall' */
-  luaD_poscall(L, L->top - n);
+  luaD_poscall(L, L->top - n, n);
 }
 
 
@@ -523,7 +533,8 @@ static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) {
 */
 static void resume (lua_State *L, void *ud) {
   int nCcalls = L->nCcalls;
-  StkId firstArg = cast(StkId, ud);
+  int n = *(cast(int*, ud));  /* number of arguments */
+  StkId firstArg = L->top - n;  /* first argument */
   CallInfo *ci = L->ci;
   if (nCcalls >= LUAI_MAXCCALLS)
     resume_error(L, "C stack overflow", firstArg);
@@ -543,14 +554,13 @@ static void resume (lua_State *L, void *ud) {
       luaV_execute(L);  /* just continue running Lua code */
     else {  /* 'common' yield */
       if (ci->u.c.k != NULL) {  /* does it have a continuation function? */
-        int n;
         lua_unlock(L);
         n = (*ci->u.c.k)(L, LUA_YIELD, ci->u.c.ctx); /* call continuation */
         lua_lock(L);
         api_checknelems(L, n);
         firstArg = L->top - n;  /* yield results come from continuation */
       }
-      luaD_poscall(L, firstArg);  /* finish 'luaD_precall' */
+      luaD_poscall(L, firstArg, n);  /* finish 'luaD_precall' */
     }
     unroll(L, NULL);  /* run continuation */
   }
@@ -566,7 +576,7 @@ LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) {
   L->nCcalls = (from) ? from->nCcalls + 1 : 1;
   L->nny = 0;  /* allow yields */
   api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs);
-  status = luaD_rawrunprotected(L, resume, L->top - nargs);
+  status = luaD_rawrunprotected(L, resume, &nargs);
   if (status == -1)  /* error calling 'lua_resume'? */
     status = LUA_ERRRUN;
   else {  /* continue running after recoverable errors */
@@ -575,7 +585,7 @@ LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) {
       status = luaD_rawrunprotected(L, unroll, &status);
     }
     if (errorstatus(status)) {  /* unrecoverable error? */
-      L->status = cast_byte(status);  /* mark thread as `dead' */
+      L->status = cast_byte(status);  /* mark thread as 'dead' */
       seterrorobj(L, status, L->top);  /* push error message */
       L->ci->top = L->top;
     }
@@ -609,7 +619,7 @@ LUA_API int lua_yieldk (lua_State *L, int nresults, lua_KContext ctx,
   L->status = LUA_YIELD;
   ci->extra = savestack(L, ci->func);  /* save current 'func' */
   if (isLua(ci)) {  /* inside a hook? */
-    api_check(k == NULL, "hooks cannot continue after yielding");
+    api_check(L, k == NULL, "hooks cannot continue after yielding");
   }
   else {
     if ((ci->u.c.k = k) != NULL)  /* is there a continuation? */
@@ -650,7 +660,7 @@ int luaD_pcall (lua_State *L, Pfunc func, void *u,
 /*
 ** Execute a protected parser.
 */
-struct SParser {  /* data to `f_parser' */
+struct SParser {  /* data to 'f_parser' */
   ZIO *z;
   Mbuffer buff;  /* dynamic structure used by the scanner */
   Dyndata dyd;  /* dynamic structures used by the parser */

ldo.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.h,v 2.19 2011/10/07 20:45:19 roberto Exp roberto $
+** $Id: ldo.h,v 2.21 2014/10/25 11:50:46 roberto Exp roberto $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -23,7 +23,7 @@
 #define restorestack(L,n)	((TValue *)((char *)L->stack + (n)))
 
 
-/* type of protected functions, to be ran by `runprotected' */
+/* type of protected functions, to be ran by 'runprotected' */
 typedef void (*Pfunc) (lua_State *L, void *ud);
 
 LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name,
@@ -34,7 +34,7 @@ LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults,
                                         int allowyield);
 LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
                                         ptrdiff_t oldtop, ptrdiff_t ef);
-LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
+LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult, int nres);
 LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
 LUAI_FUNC void luaD_growstack (lua_State *L, int n);
 LUAI_FUNC void luaD_shrinkstack (lua_State *L);

ldump.c

@@ -1,14 +1,17 @@
 /*
-** $Id: ldump.c,v 2.32 2014/06/18 18:35:43 roberto Exp roberto $
+** $Id: ldump.c,v 2.35 2015/01/16 16:54:37 roberto Exp roberto $
 ** save precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
 
-#include <stddef.h>
-
 #define ldump_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <stddef.h>
+
 #include "lua.h"
 
 #include "lobject.h"
@@ -71,14 +74,15 @@ static void DumpString (const TString *s, DumpState *D) {
   if (s == NULL)
     DumpByte(0, D);
   else {
-    size_t size = s->len + 1;  /* include trailing '\0' */
+    size_t size = tsslen(s) + 1;  /* include trailing '\0' */
+    const char *str = getstr(s);
     if (size < 0xFF)
       DumpByte(cast_int(size), D);
     else {
       DumpByte(0xFF, D);
       DumpVar(size, D);
     }
-    DumpVector(getstr(s), size - 1, D);  /* no need to save '\0' */
+    DumpVector(str, size - 1, D);  /* no need to save '\0' */
   }
 }
 

lfunc.c

@@ -1,15 +1,17 @@
 /*
-** $Id: lfunc.c,v 2.42 2014/06/18 22:59:29 roberto Exp roberto $
+** $Id: lfunc.c,v 2.44 2014/10/25 11:50:46 roberto Exp roberto $
 ** Auxiliary functions to manipulate prototypes and closures
 ** See Copyright Notice in lua.h
 */
 
-
-#include <stddef.h>
-
 #define lfunc_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <stddef.h>
+
 #include "lua.h"
 
 #include "lfunc.h"
@@ -82,7 +84,7 @@ void luaF_close (lua_State *L, StkId level) {
   UpVal *uv;
   while (L->openupval != NULL && (uv = L->openupval)->v >= level) {
     lua_assert(upisopen(uv));
-    L->openupval = uv->u.open.next;  /* remove from `open' list */
+    L->openupval = uv->u.open.next;  /* remove from 'open' list */
     if (uv->refcount == 0)  /* no references? */
       luaM_free(L, uv);  /* free upvalue */
     else {
@@ -132,7 +134,7 @@ void luaF_freeproto (lua_State *L, Proto *f) {
 
 
 /*
-** Look for n-th local variable at line `line' in function `func'.
+** Look for n-th local variable at line 'line' in function 'func'.
 ** Returns NULL if not found.
 */
 const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {

lfunc.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lfunc.h,v 2.13 2014/02/18 13:39:37 roberto Exp roberto $
+** $Id: lfunc.h,v 2.14 2014/06/19 18:27:20 roberto Exp roberto $
 ** Auxiliary functions to manipulate prototypes and closures
 ** See Copyright Notice in lua.h
 */
@@ -22,6 +22,13 @@
 #define isintwups(L)	(L->twups != L)
 
 
+/*
+** maximum number of upvalues in a closure (both C and Lua). (Value
+** must fit in a VM register.)
+*/
+#define MAXUPVAL	255
+
+
 /*
 ** Upvalues for Lua closures
 */

lgc.c

@@ -1,14 +1,17 @@
 /*
-** $Id: lgc.c,v 2.195 2014/09/04 18:15:29 roberto Exp roberto $
+** $Id: lgc.c,v 2.204 2015/03/04 13:51:55 roberto Exp roberto $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
 
-#include <string.h>
-
 #define lgc_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <string.h>
+
 #include "lua.h"
 
 #include "ldebug.h"
@@ -80,8 +83,13 @@
 #define markvalue(g,o) { checkconsistency(o); \
   if (valiswhite(o)) reallymarkobject(g,gcvalue(o)); }
 
-#define markobject(g,t) \
+#define markobject(g,t)	{ if (iswhite(t)) reallymarkobject(g, obj2gco(t)); }
-  { if ((t) && iswhite(t)) reallymarkobject(g, obj2gco(t)); }
+
+/*
+** mark an object that can be NULL (either because it is really optional,
+** or it was stripped as debug info, or inside an uncompleted structure)
+*/
+#define markobjectN(g,t)	{ if (t) markobject(g,t); }
 
 static void reallymarkobject (global_State *g, GCObject *o);
 
@@ -119,14 +127,14 @@ static void removeentry (Node *n) {
 /*
 ** tells whether a key or value can be cleared from a weak
 ** table. Non-collectable objects are never removed from weak
-** tables. Strings behave as `values', so are never removed too. for
+** tables. Strings behave as 'values', so are never removed too. for
 ** other objects: if really collected, cannot keep them; for objects
 ** being finalized, keep them in keys, but not in values
 */
 static int iscleared (global_State *g, const TValue *o) {
   if (!iscollectable(o)) return 0;
   else if (ttisstring(o)) {
-    markobject(g, tsvalue(o));  /* strings are `values', so are never weak */
+    markobject(g, tsvalue(o));  /* strings are 'values', so are never weak */
     return 0;
   }
   else return iswhite(gcvalue(o));
@@ -223,15 +231,19 @@ static void reallymarkobject (global_State *g, GCObject *o) {
  reentry:
   white2gray(o);
   switch (o->tt) {
-    case LUA_TSHRSTR:
+    case LUA_TSHRSTR: {
+      gray2black(o);
+      g->GCmemtrav += sizelstring(gco2ts(o)->shrlen);
+      break;
+    }
     case LUA_TLNGSTR: {
       gray2black(o);
-      g->GCmemtrav += sizestring(gco2ts(o));
+      g->GCmemtrav += sizelstring(gco2ts(o)->u.lnglen);
       break;
     }
     case LUA_TUSERDATA: {
       TValue uvalue;
-      markobject(g, gco2u(o)->metatable);  /* mark its metatable */
+      markobjectN(g, gco2u(o)->metatable);  /* mark its metatable */
       gray2black(o);
       g->GCmemtrav += sizeudata(gco2u(o));
       getuservalue(g->mainthread, gco2u(o), &uvalue);
@@ -272,7 +284,7 @@ static void reallymarkobject (global_State *g, GCObject *o) {
 static void markmt (global_State *g) {
   int i;
   for (i=0; i < LUA_NUMTAGS; i++)
-    markobject(g, g->mt[i]);
+    markobjectN(g, g->mt[i]);
 }
 
 
@@ -434,7 +446,7 @@ static void traversestrongtable (global_State *g, Table *h) {
 static lu_mem traversetable (global_State *g, Table *h) {
   const char *weakkey, *weakvalue;
   const TValue *mode = gfasttm(g, h->metatable, TM_MODE);
-  markobject(g, h->metatable);
+  markobjectN(g, h->metatable);
   if (mode && ttisstring(mode) &&  /* is there a weak mode? */
       ((weakkey = strchr(svalue(mode), 'k')),
        (weakvalue = strchr(svalue(mode), 'v')),
@@ -454,19 +466,24 @@ static lu_mem traversetable (global_State *g, Table *h) {
 }
 
 
+/*
+** Traverse a prototype. (While a prototype is being build, its
+** arrays can be larger than needed; the extra slots are filled with
+** NULL, so the use of 'markobjectN')
+*/
 static int traverseproto (global_State *g, Proto *f) {
   int i;
   if (f->cache && iswhite(f->cache))
     f->cache = NULL;  /* allow cache to be collected */
-  markobject(g, f->source);
+  markobjectN(g, f->source);
   for (i = 0; i < f->sizek; i++)  /* mark literals */
     markvalue(g, &f->k[i]);
   for (i = 0; i < f->sizeupvalues; i++)  /* mark upvalue names */
-    markobject(g, f->upvalues[i].name);
+    markobjectN(g, f->upvalues[i].name);
   for (i = 0; i < f->sizep; i++)  /* mark nested protos */
-    markobject(g, f->p[i]);
+    markobjectN(g, f->p[i]);
   for (i = 0; i < f->sizelocvars; i++)  /* mark local-variable names */
-    markobject(g, f->locvars[i].varname);
+    markobjectN(g, f->locvars[i].varname);
   return sizeof(Proto) + sizeof(Instruction) * f->sizecode +
                          sizeof(Proto *) * f->sizep +
                          sizeof(TValue) * f->sizek +
@@ -491,7 +508,7 @@ static lu_mem traverseCclosure (global_State *g, CClosure *cl) {
 */
 static lu_mem traverseLclosure (global_State *g, LClosure *cl) {
   int i;
-  markobject(g, cl->p);  /* mark its prototype */
+  markobjectN(g, cl->p);  /* mark its prototype */
   for (i = 0; i < cl->nupvalues; i++) {  /* mark its upvalues */
     UpVal *uv = cl->upvals[i];
     if (uv != NULL) {
@@ -686,9 +703,10 @@ static void freeobj (lua_State *L, GCObject *o) {
     case LUA_TUSERDATA: luaM_freemem(L, o, sizeudata(gco2u(o))); break;
     case LUA_TSHRSTR:
       luaS_remove(L, gco2ts(o));  /* remove it from hash table */
-      /* go through */
+      luaM_freemem(L, o, sizelstring(gco2ts(o)->shrlen));
+      break;
     case LUA_TLNGSTR: {
-      luaM_freemem(L, o, sizestring(gco2ts(o)));
+      luaM_freemem(L, o, sizelstring(gco2ts(o)->u.lnglen));
       break;
     }
     default: lua_assert(0);
@@ -702,10 +720,10 @@ static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count);
 
 /*
 ** sweep at most 'count' elements from a list of GCObjects erasing dead
-** objects, where a dead (not alive) object is one marked with the "old"
+** objects, where a dead object is one marked with the old (non current)
-** (non current) white and not fixed; change all non-dead objects back
+** white; change all non-dead objects back to white, preparing for next
-** to white, preparing for next collection cycle.
+** collection cycle. Return where to continue the traversal or NULL if
-** When object is a thread, sweep its list of open upvalues too.
+** list is finished.
 */
 static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count) {
   global_State *g = G(L);
@@ -718,7 +736,7 @@ static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count) {
       *p = curr->next;  /* remove 'curr' from list */
       freeobj(L, curr);  /* erase 'curr' */
     }
-    else {  /* update marks */
+    else {  /* change mark to 'white' */
       curr->marked = cast_byte((marked & maskcolors) | white);
       p = &curr->next;  /* go to next element */
     }
@@ -909,12 +927,15 @@ void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt) {
 
 
 /*
-** set a reasonable "time" to wait before starting a new GC cycle;
+** Set a reasonable "time" to wait before starting a new GC cycle; cycle
-** cycle will start when memory use hits threshold
+** will start when memory use hits threshold. (Division by 'estimate'
+** should be OK: it cannot be zero (because Lua cannot even start with
+** less than PAUSEADJ bytes).
 */
 static void setpause (global_State *g) {
   l_mem threshold, debt;
   l_mem estimate = g->GCestimate / PAUSEADJ;  /* adjust 'estimate' */
+  lua_assert(estimate > 0);
   threshold = (g->gcpause < MAX_LMEM / estimate)  /* overflow? */
             ? estimate * g->gcpause  /* no overflow */
             : MAX_LMEM;  /* overflow; truncate to maximum */
@@ -972,7 +993,7 @@ static l_mem atomic (lua_State *L) {
   /* remark occasional upvalues of (maybe) dead threads */
   remarkupvals(g);
   propagateall(g);  /* propagate changes */
-  work = g->GCmemtrav;  /* stop counting (do not recount gray-agains) */
+  work = g->GCmemtrav;  /* stop counting (do not recount 'grayagain') */
   g->gray = grayagain;
   propagateall(g);  /* traverse 'grayagain' list */
   g->GCmemtrav = 0;  /* restart counting */
@@ -992,10 +1013,11 @@ static l_mem atomic (lua_State *L) {
   /* at this point, all resurrected objects are marked. */
   /* remove dead objects from weak tables */
   clearkeys(g, g->ephemeron, NULL);  /* clear keys from all ephemeron tables */
-  clearkeys(g, g->allweak, NULL);  /* clear keys from all allweak tables */
+  clearkeys(g, g->allweak, NULL);  /* clear keys from all 'allweak' tables */
   /* clear values from resurrected weak tables */
   clearvalues(g, g->weak, origweak);
   clearvalues(g, g->allweak, origall);
+  luaS_clearcache(g);
   g->currentwhite = cast_byte(otherwhite(g));  /* flip current white */
   work += g->GCmemtrav;  /* complete counting */
   return work;  /* estimate of memory marked by 'atomic' */
@@ -1031,7 +1053,7 @@ static lu_mem singlestep (lua_State *L) {
       g->GCmemtrav = 0;
       lua_assert(g->gray);
       propagatemark(g);
-       if (g->gray == NULL)  /* no more `gray' objects? */
+       if (g->gray == NULL)  /* no more gray objects? */
         g->gcstate = GCSatomic;  /* finish propagate phase */
       return g->GCmemtrav;  /* memory traversed in this step */
     }
@@ -1122,7 +1144,7 @@ void luaC_step (lua_State *L) {
 
 
 /*
-** Performs a full GC cycle; if "isemergency", set a flag to avoid
+** Performs a full GC cycle; if 'isemergency', set a flag to avoid
 ** some operations which could change the interpreter state in some
 ** unexpected ways (running finalizers and shrinking some structures).
 ** Before running the collection, check 'keepinvariant'; if it is true,

lgc.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.h,v 2.84 2014/07/19 15:09:37 roberto Exp roberto $
+** $Id: lgc.h,v 2.85 2014/07/19 15:14:46 roberto Exp roberto $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -74,7 +74,7 @@
 #define testbit(x,b)		testbits(x, bitmask(b))
 
 
-/* Layout for bit use in `marked' field: */
+/* Layout for bit use in 'marked' field: */
 #define WHITE0BIT	0  /* object is white (type 0) */
 #define WHITE1BIT	1  /* object is white (type 1) */
 #define BLACKBIT	2  /* object is black */

linit.c

@@ -1,20 +1,33 @@
 /*
-** $Id: linit.c,v 1.33 2014/02/06 17:32:33 roberto Exp roberto $
+** $Id: linit.c,v 1.37 2014/12/09 15:00:17 roberto Exp roberto $
 ** Initialization of libraries for lua.c and other clients
 ** See Copyright Notice in lua.h
 */
 
 
+#define linit_c
+#define LUA_LIB
+
 /*
 ** If you embed Lua in your program and need to open the standard
 ** libraries, call luaL_openlibs in your program. If you need a
 ** different set of libraries, copy this file to your project and edit
 ** it to suit your needs.
+**
+** You can also *preload* libraries, so that a later 'require' can
+** open the library, which is already linked to the application.
+** For that, do the following code:
+**
+**  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
+**  lua_pushcfunction(L, luaopen_modname);
+**  lua_setfield(L, -2, modname);
+**  lua_pop(L, 1);  // remove _PRELOAD table
 */
 
+#include "lprefix.h"
 
-#define linit_c
+
-#define LUA_LIB
+#include <stddef.h>
 
 #include "lua.h"
 
@@ -35,8 +48,8 @@ static const luaL_Reg loadedlibs[] = {
   {LUA_OSLIBNAME, luaopen_os},
   {LUA_STRLIBNAME, luaopen_string},
   {LUA_MATHLIBNAME, luaopen_math},
-  {LUA_DBLIBNAME, luaopen_debug},
   {LUA_UTF8LIBNAME, luaopen_utf8},
+  {LUA_DBLIBNAME, luaopen_debug},
 #if defined(LUA_COMPAT_BITLIB)
   {LUA_BITLIBNAME, luaopen_bit32},
 #endif
@@ -44,27 +57,12 @@ static const luaL_Reg loadedlibs[] = {
 };
 
 
-/*
-** these libs are preloaded and must be required before used
-*/
-static const luaL_Reg preloadedlibs[] = {
-  {NULL, NULL}
-};
-
-
 LUALIB_API void luaL_openlibs (lua_State *L) {
   const luaL_Reg *lib;
-  /* call open functions from 'loadedlibs' and set results to global table */
+  /* "require" functions from 'loadedlibs' and set results to global table */
   for (lib = loadedlibs; lib->func; lib++) {
     luaL_requiref(L, lib->name, lib->func, 1);
     lua_pop(L, 1);  /* remove lib */
   }
-  /* add open functions from 'preloadedlibs' into 'package.preload' table */
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
-  for (lib = preloadedlibs; lib->func; lib++) {
-    lua_pushcfunction(L, lib->func);
-    lua_setfield(L, -2, lib->name);
-  }
-  lua_pop(L, 1);  /* remove _PRELOAD table */
 }
 

liolib.c

@@ -1,18 +1,13 @@
 /*
-** $Id: liolib.c,v 2.135 2014/10/22 11:44:20 roberto Exp roberto $
+** $Id: liolib.c,v 2.143 2015/03/06 19:09:08 roberto Exp roberto $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
 
+#define liolib_c
+#define LUA_LIB
 
-/*
+#include "lprefix.h"
-** This definition must come before the inclusion of 'stdio.h'; it
-** should not affect non-POSIX systems
-*/
-#if !defined(_FILE_OFFSET_BITS)
-#define	_LARGEFILE_SOURCE	1
-#define _FILE_OFFSET_BITS	64
-#endif
 
 
 #include <ctype.h>
@@ -22,9 +17,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define liolib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -60,14 +52,14 @@
 #define l_popen(L,c,m)		(fflush(NULL), popen(c,m))
 #define l_pclose(L,file)	(pclose(file))
 
-#elif defined(LUA_WIN)		/* }{ */
+#elif defined(LUA_USE_WINDOWS)	/* }{ */
 
 #define l_popen(L,c,m)		(_popen(c,m))
 #define l_pclose(L,file)	(_pclose(file))
 
 #else				/* }{ */
 
-/* ANSI definitions */
+/* ISO C definitions */
 #define l_popen(L,c,m)  \
 	  ((void)((void)c, m), \
 	  luaL_error(L, "'popen' not supported"), \
@@ -112,7 +104,7 @@
 #define l_ftell(f)		ftello(f)
 #define l_seeknum		off_t
 
-#elif defined(LUA_WIN) && !defined(_CRTIMP_TYPEINFO) \
+#elif defined(LUA_USE_WINDOWS) && !defined(_CRTIMP_TYPEINFO) \
    && defined(_MSC_VER) && (_MSC_VER >= 1400)	/* }{ */
 
 /* Windows (but not DDK) and Visual C++ 2005 or higher */
@@ -122,7 +114,7 @@
 
 #else				/* }{ */
 
-/* ANSI definitions */
+/* ISO C definitions */
 #define l_fseek(f,o,w)		fseek(f,o,w)
 #define l_ftell(f)		ftell(f)
 #define l_seeknum		long
@@ -182,7 +174,7 @@ static FILE *tofile (lua_State *L) {
 
 
 /*
-** When creating file handles, always creates a `closed' file handle
+** When creating file handles, always creates a 'closed' file handle
 ** before opening the actual file; so, if there is a memory error, the
 ** file is not left opened.
 */
@@ -418,12 +410,6 @@ static int readdigits (RN *rn, int hex) {
 }
 
 
-/* access to locale "radix character" (decimal point) */
-#if !defined(l_getlocaledecpoint)
-#define l_getlocaledecpoint()     (localeconv()->decimal_point[0])
-#endif
-
-
 /*
 ** Read a number: first reads a valid prefix of a numeral into a buffer.
 ** Then it calls 'lua_stringtonumber' to check whether the format is
@@ -433,9 +419,10 @@ static int read_number (lua_State *L, FILE *f) {
   RN rn;
   int count = 0;
   int hex = 0;
-  char decp[2] = ".";
+  char decp[2];
   rn.f = f; rn.n = 0;
-  decp[0] = l_getlocaledecpoint();  /* get decimal point from locale */
+  decp[0] = lua_getlocaledecpoint();  /* get decimal point from locale */
+  decp[1] = '\0';
   l_lockfile(rn.f);
   do { rn.c = l_getc(rn.f); } while (isspace(rn.c));  /* skip spaces */
   test2(&rn, "-+");  /* optional signal */
@@ -465,21 +452,28 @@ static int read_number (lua_State *L, FILE *f) {
 static int test_eof (lua_State *L, FILE *f) {
   int c = getc(f);
   ungetc(c, f);  /* no-op when c == EOF */
-  lua_pushlstring(L, NULL, 0);
+  lua_pushliteral(L, "");
   return (c != EOF);
 }
 
 
 static int read_line (lua_State *L, FILE *f, int chop) {
   luaL_Buffer b;
-  int c;
+  int c = '\0';
   luaL_buffinit(L, &b);
-  l_lockfile(f);
+  while (c != EOF && c != '\n') {  /* repeat until end of line */
-  while ((c = l_getc(f)) != EOF && c != '\n')
+    char *buff = luaL_prepbuffer(&b);  /* pre-allocate buffer */
-    luaL_addchar(&b, c);
+    int i = 0;
-  l_unlockfile(f);
+    l_lockfile(f);  /* no memory errors can happen inside the lock */
-  if (!chop && c == '\n') luaL_addchar(&b, c);
+    while (i < LUAL_BUFFERSIZE && (c = l_getc(f)) != EOF && c != '\n')
+      buff[i++] = c;
+    l_unlockfile(f);
+    luaL_addsize(&b, i);
+  }
+  if (!chop && c == '\n')  /* want a newline and have one? */
+    luaL_addchar(&b, c);  /* add ending newline to result */
   luaL_pushresult(&b);  /* close buffer */
+  /* return ok if read something (either a newline or something else) */
   return (c == '\n' || lua_rawlen(L, -1) > 0);
 }
 
@@ -524,7 +518,7 @@ static int g_read (lua_State *L, FILE *f, int first) {
     success = 1;
     for (n = first; nargs-- && success; n++) {
       if (lua_type(L, n) == LUA_TNUMBER) {
-        size_t l = (size_t)lua_tointeger(L, n);
+        size_t l = (size_t)luaL_checkinteger(L, n);
         success = (l == 0) ? test_eof(L, f) : read_chars(L, f, l);
       }
       else {

llex.c

@@ -1,19 +1,22 @@
 /*
-** $Id: llex.c,v 2.83 2014/10/17 16:28:21 roberto Exp roberto $
+** $Id: llex.c,v 2.92 2015/04/03 18:41:57 roberto Exp roberto $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
 
+#define llex_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
 
 #include <locale.h>
 #include <string.h>
 
-#define llex_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "lctype.h"
+#include "ldebug.h"
 #include "ldo.h"
 #include "lgc.h"
 #include "llex.h"
@@ -41,7 +44,7 @@ static const char *const luaX_tokens [] = {
     "return", "then", "true", "until", "while",
     "//", "..", "...", "==", ">=", "<=", "~=",
     "<<", ">>", "::", "<eof>",
-    "<number>", "<number>", "<name>", "<string>"
+    "<number>", "<integer>", "<name>", "<string>"
 };
 
 
@@ -66,7 +69,7 @@ static void save (LexState *ls, int c) {
 
 void luaX_init (lua_State *L) {
   int i;
-  TString *e = luaS_new(L, LUA_ENV);  /* create env name */
+  TString *e = luaS_newliteral(L, LUA_ENV);  /* create env name */
   luaC_fix(L, obj2gco(e));  /* never collect this name */
   for (i=0; i<NUM_RESERVED; i++) {
     TString *ts = luaS_new(L, luaX_tokens[i]);
@@ -104,9 +107,7 @@ static const char *txtToken (LexState *ls, int token) {
 
 
 static l_noret lexerror (LexState *ls, const char *msg, int token) {
-  char buff[LUA_IDSIZE];
+  msg = luaG_addinfo(ls->L, msg, ls->source, ls->linenumber);
-  luaO_chunkid(buff, getstr(ls->source), LUA_IDSIZE);
-  msg = luaO_pushfstring(ls->L, "%s:%d: %s", buff, ls->linenumber, msg);
   if (token)
     luaO_pushfstring(ls->L, "%s near %s", msg, txtToken(ls, token));
   luaD_throw(ls->L, LUA_ERRSYNTAX);
@@ -125,7 +126,7 @@ l_noret luaX_syntaxerror (LexState *ls, const char *msg) {
 */
 TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
   lua_State *L = ls->L;
-  TValue *o;  /* entry for `str' */
+  TValue *o;  /* entry for 'str' */
   TString *ts = luaS_newlstr(L, str, l);  /* create new string */
   setsvalue2s(L, L->top++, ts);  /* temporarily anchor it in stack */
   o = luaH_set(L, ls->h, L->top - 1);
@@ -150,16 +151,17 @@ TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
 static void inclinenumber (LexState *ls) {
   int old = ls->current;
   lua_assert(currIsNewline(ls));
-  next(ls);  /* skip `\n' or `\r' */
+  next(ls);  /* skip '\n' or '\r' */
   if (currIsNewline(ls) && ls->current != old)
-    next(ls);  /* skip `\n\r' or `\r\n' */
+    next(ls);  /* skip '\n\r' or '\r\n' */
   if (++ls->linenumber >= MAX_INT)
-    luaX_syntaxerror(ls, "chunk has too many lines");
+    lexerror(ls, "chunk has too many lines", 0);
 }
 
 
 void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
                     int firstchar) {
+  ls->t.token = 0;
   ls->decpoint = '.';
   ls->L = L;
   ls->current = firstchar;
@@ -169,7 +171,7 @@ void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
   ls->linenumber = 1;
   ls->lastline = 1;
   ls->source = source;
-  ls->envn = luaS_new(L, LUA_ENV);  /* get env name */
+  ls->envn = luaS_newliteral(L, LUA_ENV);  /* get env name */
   luaZ_resizebuffer(ls->L, ls->buff, LUA_MINBUFFER);  /* initialize buffer */
 }
 
@@ -218,11 +220,6 @@ static void buffreplace (LexState *ls, char from, char to) {
 }
 
 
-#if !defined(l_getlocaledecpoint)
-#define l_getlocaledecpoint()	(localeconv()->decimal_point[0])
-#endif
-
-
 #define buff2num(b,o)	(luaO_str2num(luaZ_buffer(b), o) != 0)
 
 /*
@@ -231,7 +228,7 @@ static void buffreplace (LexState *ls, char from, char to) {
 */
 static void trydecpoint (LexState *ls, TValue *o) {
   char old = ls->decpoint;
-  ls->decpoint = l_getlocaledecpoint();
+  ls->decpoint = lua_getlocaledecpoint();
   buffreplace(ls, old, ls->decpoint);  /* try new decimal separator */
   if (!buff2num(ls->buff, o)) {
     /* format error with correct decimal point: no more options */
@@ -280,8 +277,9 @@ static int read_numeral (LexState *ls, SemInfo *seminfo) {
 
 
 /*
-** skip a sequence '[=*[' or ']=*]' and return its number of '='s or
+** skip a sequence '[=*[' or ']=*]'; if sequence is wellformed, return
-** -1 if sequence is malformed
+** its number of '='s; otherwise, return a negative number (-1 iff there
+** are no '='s after initial bracket)
 */
 static int skip_sep (LexState *ls) {
   int count = 0;
@@ -298,7 +296,7 @@ static int skip_sep (LexState *ls) {
 
 static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
   int line = ls->linenumber;  /* initial line (for error message) */
-  save_and_next(ls);  /* skip 2nd `[' */
+  save_and_next(ls);  /* skip 2nd '[' */
   if (currIsNewline(ls))  /* string starts with a newline? */
     inclinenumber(ls);  /* skip it */
   for (;;) {
@@ -312,7 +310,7 @@ static void read_long_string (LexState *ls, SemInfo *seminfo, int sep) {
       }
       case ']': {
         if (skip_sep(ls) == sep) {
-          save_and_next(ls);  /* skip 2nd `]' */
+          save_and_next(ls);  /* skip 2nd ']' */
           goto endloop;
         }
         break;
@@ -438,7 +436,7 @@ static void read_string (LexState *ls, int del, SemInfo *seminfo) {
           }
           default: {
             esccheck(ls, lisdigit(ls->current), "invalid escape sequence");
-            c = readdecesc(ls);  /* digital escape \ddd */
+            c = readdecesc(ls);  /* digital escape '\ddd' */
             goto only_save;
           }
         }
@@ -480,7 +478,7 @@ static int llex (LexState *ls, SemInfo *seminfo) {
         next(ls);
         if (ls->current == '[') {  /* long comment? */
           int sep = skip_sep(ls);
-          luaZ_resetbuffer(ls->buff);  /* `skip_sep' may dirty the buffer */
+          luaZ_resetbuffer(ls->buff);  /* 'skip_sep' may dirty the buffer */
           if (sep >= 0) {
             read_long_string(ls, NULL, sep);  /* skip long comment */
             luaZ_resetbuffer(ls->buff);  /* previous call may dirty the buff. */
@@ -498,8 +496,9 @@ static int llex (LexState *ls, SemInfo *seminfo) {
           read_long_string(ls, seminfo, sep);
           return TK_STRING;
         }
-        else if (sep == -1) return '[';
+        else if (sep != -1)  /* '[=...' missing second bracket */
-        else lexerror(ls, "invalid long string delimiter", TK_STRING);
+          lexerror(ls, "invalid long string delimiter", TK_STRING);
+        return '[';
       }
       case '=': {
         next(ls);

llex.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llex.h,v 1.75 2013/08/30 16:01:37 roberto Exp roberto $
+** $Id: llex.h,v 1.77 2014/10/25 11:50:46 roberto Exp roberto $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
@@ -14,6 +14,10 @@
 #define FIRST_RESERVED	257
 
 
+#if !defined(LUA_ENV)
+#define LUA_ENV		"_ENV"
+#endif
+
 
 /*
 * WARNING: if you change the order of this enumeration,
@@ -54,7 +58,7 @@ typedef struct Token {
 typedef struct LexState {
   int current;  /* current character (charint) */
   int linenumber;  /* input line counter */
-  int lastline;  /* line of last token `consumed' */
+  int lastline;  /* line of last token 'consumed' */
   Token t;  /* current token */
   Token lookahead;  /* look ahead token */
   struct FuncState *fs;  /* current function (parser) */

llimits.h

@@ -1,6 +1,6 @@
 /*
-** $Id: llimits.h,v 1.119 2014/07/18 18:18:45 roberto Exp roberto $
+** $Id: llimits.h,v 1.134 2015/03/06 19:49:50 roberto Exp roberto $
-** Limits, basic types, and some other `installation-dependent' definitions
+** Limits, basic types, and some other 'installation-dependent' definitions
 ** See Copyright Notice in lua.h
 */
 
@@ -14,16 +14,24 @@
 
 #include "lua.h"
 
-
+/*
-typedef unsigned LUA_INT32 lu_int32;
+** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count
-
+** the total memory used by Lua (in bytes). Usually, 'size_t' and
+** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines.
+*/
+#if defined(LUAI_MEM)		/* { external definitions? */
 typedef LUAI_UMEM lu_mem;
-
 typedef LUAI_MEM l_mem;
+#elif LUAI_BITSINT >= 32	/* }{ */
+typedef size_t lu_mem;
+typedef ptrdiff_t l_mem;
+#else  /* 16-bit ints */	/* }{ */
+typedef unsigned long lu_mem;
+typedef long l_mem;
+#endif				/* } */
 
 
-
+/* chars used as small naturals (so that 'char' is reserved for characters) */
-/* chars used as small naturals (so that `char' is reserved for characters) */
 typedef unsigned char lu_byte;
 
 
@@ -44,11 +52,11 @@ typedef unsigned char lu_byte;
 
 
 /*
-** conversion of pointer to integer:
+** conversion of pointer to unsigned integer:
 ** this is for hashing only; there is no problem if the integer
 ** cannot hold the whole pointer value
 */
-#define point2int(p)	((unsigned int)((lu_mem)(p) & UINT_MAX))
+#define point2uint(p)	((unsigned int)((size_t)(p) & UINT_MAX))
 
 
 
@@ -80,22 +88,20 @@ typedef LUAI_UACINT l_uacInt;
 /*
 ** assertion for checking API calls
 */
-#if defined(LUA_USE_APICHECK)
+#if !defined(luai_apicheck)
-#include <assert.h>
+#define luai_apicheck(l,e)	lua_assert(e)
-#define luai_apicheck(e)	assert(e)
-#else
-#define luai_apicheck(e)	lua_assert(e)
 #endif
 
-
+#define api_check(l,e,msg)	luai_apicheck(l,(e) && msg)
-#define api_check(e,msg)	luai_apicheck((e) && msg)
 
 
+/* macro to avoid warnings about unused variables */
 #if !defined(UNUSED)
-#define UNUSED(x)	((void)(x))	/* to avoid warnings */
+#define UNUSED(x)	((void)(x))
 #endif
 
 
+/* type casts (a macro highlights casts in the code) */
 #define cast(t, exp)	((t)(exp))
 
 #define cast_void(i)	cast(void, (i))
@@ -112,7 +118,7 @@ typedef LUAI_UACINT l_uacInt;
 
 /*
 ** cast a lua_Unsigned to a signed lua_Integer; this cast is
-** not strict ANSI C, but two-complement architectures should
+** not strict ISO C, but two-complement architectures should
 ** work fine.
 */
 #if !defined(l_castU2S)
@@ -125,7 +131,7 @@ typedef LUAI_UACINT l_uacInt;
 */
 #if defined(__GNUC__)
 #define l_noret		void __attribute__((noreturn))
-#elif defined(_MSC_VER)
+#elif defined(_MSC_VER) && _MSC_VER >= 1200
 #define l_noret		void __declspec(noreturn)
 #else
 #define l_noret		void
@@ -141,29 +147,47 @@ typedef LUAI_UACINT l_uacInt;
 #define LUAI_MAXCCALLS		200
 #endif
 
-/*
-** maximum number of upvalues in a closure (both C and Lua). (Value
-** must fit in an unsigned char.)
-*/
-#define MAXUPVAL	UCHAR_MAX
 
 
 /*
-** type for virtual-machine instructions
+** type for virtual-machine instructions;
 ** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h)
 */
-typedef lu_int32 Instruction;
+#if LUAI_BITSINT >= 32
+typedef unsigned int Instruction;
+#else
+typedef unsigned long Instruction;
+#endif
 
 
 
-/* maximum stack for a Lua function */
+/*
-#define MAXSTACK	250
+** Maximum length for short strings, that is, strings that are
+** internalized. (Cannot be smaller than reserved words or tags for
+** metamethods, as these strings must be internalized;
+** #("function") = 8, #("__newindex") = 10.)
+*/
+#if !defined(LUAI_MAXSHORTLEN)
+#define LUAI_MAXSHORTLEN	40
+#endif
 
 
-
+/*
-/* minimum size for the string table (must be power of 2) */
+** Initial size for the string table (must be power of 2).
+** The Lua core alone registers ~50 strings (reserved words +
+** metaevent keys + a few others). Libraries would typically add
+** a few dozens more.
+*/
 #if !defined(MINSTRTABSIZE)
-#define MINSTRTABSIZE	64	/* minimum size for "predefined" strings */
+#define MINSTRTABSIZE	128
+#endif
+
+
+/*
+** Size of cache for strings in the API (better be a prime)
+*/
+#if !defined(STRCACHE_SIZE)
+#define STRCACHE_SIZE		127
 #endif
 
 
@@ -173,13 +197,21 @@ typedef lu_int32 Instruction;
 #endif
 
 
+/*
+** macros that are executed whenether program enters the Lua core
+** ('lua_lock') and leaves the core ('lua_unlock')
+*/
 #if !defined(lua_lock)
-#define lua_lock(L)     ((void) 0)
+#define lua_lock(L)	((void) 0)
-#define lua_unlock(L)   ((void) 0)
+#define lua_unlock(L)	((void) 0)
 #endif
 
+/*
+** macro executed during Lua functions at points where the
+** function can yield.
+*/
 #if !defined(luai_threadyield)
-#define luai_threadyield(L)     {lua_unlock(L); lua_lock(L);}
+#define luai_threadyield(L)	{lua_unlock(L); lua_lock(L);}
 #endif
 
 
@@ -205,15 +237,62 @@ typedef lu_int32 Instruction;
 #endif
 
 #if !defined(luai_userstateresume)
-#define luai_userstateresume(L,n)       ((void)L)
+#define luai_userstateresume(L,n)	((void)L)
 #endif
 
 #if !defined(luai_userstateyield)
-#define luai_userstateyield(L,n)        ((void)L)
+#define luai_userstateyield(L,n)	((void)L)
 #endif
 
 
 
+/*
+** The luai_num* macros define the primitive operations over numbers.
+*/
+
+/* floor division (defined as 'floor(a/b)') */
+#if !defined(luai_numidiv)
+#define luai_numidiv(L,a,b)     ((void)L, l_floor(luai_numdiv(L,a,b)))
+#endif
+
+/* float division */
+#if !defined(luai_numdiv)
+#define luai_numdiv(L,a,b)      ((a)/(b))
+#endif
+
+/*
+** modulo: defined as 'a - floor(a/b)*b'; this definition gives NaN when
+** 'b' is huge, but the result should be 'a'. 'fmod' gives the result of
+** 'a - trunc(a/b)*b', and therefore must be corrected when 'trunc(a/b)
+** ~= floor(a/b)'. That happens when the division has a non-integer
+** negative result, which is equivalent to the test below.
+*/
+#if !defined(luai_nummod)
+#define luai_nummod(L,a,b,m)  \
+  { (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); }
+#endif
+
+/* exponentiation */
+#if !defined(luai_numpow)
+#define luai_numpow(L,a,b)      ((void)L, l_mathop(pow)(a,b))
+#endif
+
+/* the others are quite standard operations */
+#if !defined(luai_numadd)
+#define luai_numadd(L,a,b)      ((a)+(b))
+#define luai_numsub(L,a,b)      ((a)-(b))
+#define luai_nummul(L,a,b)      ((a)*(b))
+#define luai_numunm(L,a)        (-(a))
+#define luai_numeq(a,b)         ((a)==(b))
+#define luai_numlt(a,b)         ((a)<(b))
+#define luai_numle(a,b)         ((a)<=(b))
+#define luai_numisnan(a)        (!luai_numeq((a), (a)))
+#endif
+
+
+
+
+
 /*
 ** macro to control inclusion of some hard tests on stack reallocation
 */

lmathlib.c

@@ -1,16 +1,18 @@
 /*
-** $Id: lmathlib.c,v 1.109 2014/10/01 11:54:56 roberto Exp $
+** $Id: lmathlib.c,v 1.114 2014/12/27 20:32:26 roberto Exp roberto $
 ** Standard mathematical library
 ** See Copyright Notice in lua.h
 */
 
+#define lmathlib_c
+#define LUA_LIB
+
+#include "lprefix.h"
+
 
 #include <stdlib.h>
 #include <math.h>
 
-#define lmathlib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -25,9 +27,11 @@
 #if defined(LUA_USE_POSIX)
 #define l_rand()	random()
 #define l_srand(x)	srandom(x)
+#define L_RANDMAX	2147483647	/* (2^31 - 1), following POSIX */
 #else
 #define l_rand()	rand()
 #define l_srand(x)	srand(x)
+#define L_RANDMAX	RAND_MAX
 #endif
 #endif				/* } */
 
@@ -91,7 +95,7 @@ static int math_toint (lua_State *L) {
 
 static void pushnumint (lua_State *L, lua_Number d) {
   lua_Integer n;
-  if (lua_numtointeger(d, &n))  /* does 'd' fit in an integer? */
+  if (lua_numbertointeger(d, &n))  /* does 'd' fit in an integer? */
     lua_pushinteger(L, n);  /* result is integer */
   else
     lua_pushnumber(L, d);  /* result is float */
@@ -179,6 +183,9 @@ static int math_log (lua_State *L) {
     res = l_mathop(log)(x);
   else {
     lua_Number base = luaL_checknumber(L, 2);
+#if !defined(LUA_USE_C89)
+    if (base == 2.0) res = l_mathop(log2)(x); else
+#endif
     if (base == 10.0) res = l_mathop(log10)(x);
     else res = l_mathop(log)(x)/l_mathop(log)(base);
   }
@@ -231,12 +238,12 @@ static int math_max (lua_State *L) {
 
 /*
 ** This function uses 'double' (instead of 'lua_Number') to ensure that
-** all bits from 'l_rand' can be represented, and that 'RAND_MAX + 1.0'
+** all bits from 'l_rand' can be represented, and that 'RANDMAX + 1.0'
 ** will keep full precision (ensuring that 'r' is always less than 1.0.)
 */
 static int math_random (lua_State *L) {
   lua_Integer low, up;
-  double r = (double)l_rand() * (1.0 / ((double)RAND_MAX + 1.0));
+  double r = (double)l_rand() * (1.0 / ((double)L_RANDMAX + 1.0));
   switch (lua_gettop(L)) {  /* check number of arguments */
     case 0: {  /* no arguments */
       lua_pushnumber(L, (lua_Number)r);  /* Number between 0 and 1 */
@@ -256,8 +263,8 @@ static int math_random (lua_State *L) {
   }
   /* random integer in the interval [low, up] */
   luaL_argcheck(L, low <= up, 1, "interval is empty"); 
-  luaL_argcheck(L, (lua_Unsigned)up - low <= (lua_Unsigned)LUA_MAXINTEGER,
+  luaL_argcheck(L, low >= 0 || up <= LUA_MAXINTEGER + low, 1,
-                   1, "interval too large");
+                   "interval too large");
   r *= (double)(up - low) + 1.0;
   lua_pushinteger(L, (lua_Integer)r + low);
   return 1;

lmem.c

@@ -1,15 +1,17 @@
 /*
-** $Id: lmem.c,v 1.85 2014/06/26 18:29:05 roberto Exp roberto $
+** $Id: lmem.c,v 1.90 2015/03/03 18:18:29 roberto Exp roberto $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */
 
-
-#include <stddef.h>
-
 #define lmem_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <stddef.h>
+
 #include "lua.h"
 
 #include "ldebug.h"
@@ -24,15 +26,15 @@
 /*
 ** About the realloc function:
 ** void * frealloc (void *ud, void *ptr, size_t osize, size_t nsize);
-** (`osize' is the old size, `nsize' is the new size)
+** ('osize' is the old size, 'nsize' is the new size)
 **
-** * frealloc(ud, NULL, x, s) creates a new block of size `s' (no
+** * frealloc(ud, NULL, x, s) creates a new block of size 's' (no
 ** matter 'x').
 **
-** * frealloc(ud, p, x, 0) frees the block `p'
+** * frealloc(ud, p, x, 0) frees the block 'p'
 ** (in this specific case, frealloc must return NULL);
 ** particularly, frealloc(ud, NULL, 0, 0) does nothing
-** (which is equivalent to free(NULL) in ANSI C)
+** (which is equivalent to free(NULL) in ISO C)
 **
 ** frealloc returns NULL if it cannot create or reallocate the area
 ** (any reallocation to an equal or smaller size cannot fail!)
@@ -83,10 +85,11 @@ void *luaM_realloc_ (lua_State *L, void *block, size_t osize, size_t nsize) {
 #endif
   newblock = (*g->frealloc)(g->ud, block, osize, nsize);
   if (newblock == NULL && nsize > 0) {
-    api_check( nsize > realosize,
+    lua_assert(nsize > realosize);  /* cannot fail when shrinking a block */
-                 "realloc cannot fail when shrinking a block");
+    if (g->version) {  /* is state fully built? */
-    luaC_fullgc(L, 1);  /* try to free some memory... */
+      luaC_fullgc(L, 1);  /* try to free some memory... */
-    newblock = (*g->frealloc)(g->ud, block, osize, nsize);  /* try again */
+      newblock = (*g->frealloc)(g->ud, block, osize, nsize);  /* try again */
+    }
     if (newblock == NULL)
       luaD_throw(L, LUA_ERRMEM);
   }

lmem.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lmem.h,v 1.40 2013/02/20 14:08:21 roberto Exp roberto $
+** $Id: lmem.h,v 1.42 2014/12/19 13:45:40 roberto Exp roberto $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */
@@ -32,6 +32,12 @@
       ? luaM_toobig(L) : cast_void(0)) , \
    luaM_realloc_(L, (b), (on)*(e), (n)*(e)))
 
+/*
+** Arrays of chars do not need any test
+*/
+#define luaM_reallocvchar(L,b,on,n)  \
+    cast(char *, luaM_realloc_(L, (b), (on)*sizeof(char), (n)*sizeof(char)))
+
 #define luaM_freemem(L, b, s)	luaM_realloc_(L, (b), (s), 0)
 #define luaM_free(L, b)		luaM_realloc_(L, (b), sizeof(*(b)), 0)
 #define luaM_freearray(L, b, n)   luaM_realloc_(L, (b), (n)*sizeof(*(b)), 0)

loadlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: loadlib.c,v 1.116 2014/07/29 16:01:00 roberto Exp roberto $
+** $Id: loadlib.c,v 1.125 2015/01/13 13:18:04 roberto Exp roberto $
 ** Dynamic library loader for Lua
 ** See Copyright Notice in lua.h
 **
@@ -8,22 +8,16 @@
 ** systems.
 */
 
-
-/*
-** if needed, includes windows header before everything else
-*/
-#if defined(_WIN32)
-#include <windows.h>
-#endif
-
-
-#include <stdlib.h>
-#include <string.h>
-
-
 #define loadlib_c
 #define LUA_LIB
 
+#include "lprefix.h"
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -92,8 +86,11 @@
 #define LUA_OFSEP	"_"
 
 
-/* table (in the registry) that keeps handles for all loaded C libraries */
+/*
-#define CLIBS		"_CLIBS"
+** unique key for table in the registry that keeps handles
+** for all loaded C libraries
+*/
+static const int CLIBS = 0;
 
 #define LIB_FAIL	"open"
 
@@ -127,7 +124,7 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym);
 
 
 
-#if defined(LUA_USE_DLOPEN)
+#if defined(LUA_USE_DLOPEN)	/* { */
 /*
 ** {========================================================================
 ** This is an implementation of loadlib based on the dlfcn interface.
@@ -139,6 +136,18 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym);
 
 #include <dlfcn.h>
 
+/*
+** Macro to convert pointer-to-void* to pointer-to-function. This cast
+** is undefined according to ISO C, but POSIX assumes that it works.
+** (The '__extension__' in gnu compilers is only to avoid warnings.)
+*/
+#if defined(__GNUC__)
+#define cast_func(p) (__extension__ (lua_CFunction)(p))
+#else
+#define cast_func(p) ((lua_CFunction)(p))
+#endif
+
+
 static void lsys_unloadlib (void *lib) {
   dlclose(lib);
 }
@@ -152,7 +161,7 @@ static void *lsys_load (lua_State *L, const char *path, int seeglb) {
 
 
 static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
-  lua_CFunction f = (lua_CFunction)dlsym(lib, sym);
+  lua_CFunction f = cast_func(dlsym(lib, sym));
   if (f == NULL) lua_pushstring(L, dlerror());
   return f;
 }
@@ -161,13 +170,15 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 
 
 
-#elif defined(LUA_DL_DLL)
+#elif defined(LUA_DL_DLL)	/* }{ */
 /*
 ** {======================================================================
 ** This is an implementation of loadlib for Windows using native functions.
 ** =======================================================================
 */
 
+#include <windows.h>
+
 #undef setprogdir
 
 /*
@@ -225,7 +236,7 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 /* }====================================================== */
 
 
-#else
+#else				/* }{ */
 /*
 ** {======================================================
 ** Fallback for other systems
@@ -258,7 +269,7 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 }
 
 /* }====================================================== */
-#endif
+#endif				/* } */
 
 
 /*
@@ -266,7 +277,7 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 */
 static void *checkclib (lua_State *L, const char *path) {
   void *plib;
-  lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
+  lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS);
   lua_getfield(L, -1, path);
   plib = lua_touserdata(L, -1);  /* plib = CLIBS[path] */
   lua_pop(L, 2);  /* pop CLIBS table and 'plib' */
@@ -279,7 +290,7 @@ static void *checkclib (lua_State *L, const char *path) {
 ** registry.CLIBS[#CLIBS + 1] = plib  -- also keep a list of all libraries
 */
 static void addtoclib (lua_State *L, const char *path, void *plib) {
-  lua_getfield(L, LUA_REGISTRYINDEX, CLIBS);
+  lua_rawgetp(L, LUA_REGISTRYINDEX, &CLIBS);
   lua_pushlightuserdata(L, plib);
   lua_pushvalue(L, -1);
   lua_setfield(L, -3, path);  /* CLIBS[path] = plib */
@@ -520,8 +531,8 @@ static void findloader (lua_State *L, const char *name) {
   int i;
   luaL_Buffer msg;  /* to build error message */
   luaL_buffinit(L, &msg);
-  lua_getfield(L, lua_upvalueindex(1), "searchers");  /* will be at index 3 */
+  /* push 'package.searchers' to index 3 in the stack */
-  if (!lua_istable(L, 3))
+  if (lua_getfield(L, lua_upvalueindex(1), "searchers") != LUA_TTABLE)
     luaL_error(L, "'package.searchers' must be a table");
   /*  iterate over available searchers to find a loader */
   for (i = 1; ; i++) {
@@ -729,7 +740,7 @@ static void createsearcherstable (lua_State *L) {
   }
 #if defined(LUA_COMPAT_LOADERS)
   lua_pushvalue(L, -1);  /* make a copy of 'searchers' table */
-  lua_setfield(L, -3, "loaders");  /* put it in field `loaders' */
+  lua_setfield(L, -3, "loaders");  /* put it in field 'loaders' */
 #endif
   lua_setfield(L, -2, "searchers");  /* put it in field 'searchers' */
 }
@@ -740,17 +751,18 @@ static void createsearcherstable (lua_State *L) {
 ** setting a finalizer to close all libraries when closing state.
 */
 static void createclibstable (lua_State *L) {
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, CLIBS);  /* create CLIBS table */
+  lua_newtable(L);  /* create CLIBS table */
   lua_createtable(L, 0, 1);  /* create metatable for CLIBS */
   lua_pushcfunction(L, gctm);
   lua_setfield(L, -2, "__gc");  /* set finalizer for CLIBS table */
   lua_setmetatable(L, -2);
+  lua_rawsetp(L, LUA_REGISTRYINDEX, &CLIBS);  /* set CLIBS table in registry */
 }
 
 
 LUAMOD_API int luaopen_package (lua_State *L) {
   createclibstable(L);
-  luaL_newlib(L, pk_funcs);  /* create `package' table */
+  luaL_newlib(L, pk_funcs);  /* create 'package' table */
   createsearcherstable(L);
   /* set field 'path' */
   setpath(L, "path", LUA_PATHVARVERSION, LUA_PATH_VAR, LUA_PATH_DEFAULT);
@@ -760,10 +772,10 @@ LUAMOD_API int luaopen_package (lua_State *L) {
   lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
                      LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
   lua_setfield(L, -2, "config");
-  /* set field `loaded' */
+  /* set field 'loaded' */
   luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
   lua_setfield(L, -2, "loaded");
-  /* set field `preload' */
+  /* set field 'preload' */
   luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
   lua_setfield(L, -2, "preload");
   lua_pushglobaltable(L);

lobject.c

@@ -1,17 +1,22 @@
 /*
-** $Id: lobject.c,v 2.92 2014/10/10 22:23:04 roberto Exp roberto $
+** $Id: lobject.c,v 2.103 2015/03/28 19:14:47 roberto Exp roberto $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
 
+#define lobject_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
+
+#include <locale.h>
+#include <math.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define lobject_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "lctype.h"
@@ -36,8 +41,12 @@ LUAI_DDEF const TValue luaO_nilobject_ = {NILCONSTANT};
 int luaO_int2fb (unsigned int x) {
   int e = 0;  /* exponent */
   if (x < 8) return x;
-  while (x >= 0x10) {
+  while (x >= (8 << 4)) {  /* coarse steps */
-    x = (x+1) >> 1;
+    x = (x + 0xf) >> 4;  /* x = ceil(x / 16) */
+    e += 4;
+  }
+  while (x >= (8 << 1)) {  /* fine steps */
+    x = (x + 1) >> 1;  /* x = ceil(x / 2) */
     e++;
   }
   return ((e+1) << 3) | (cast_int(x) - 8);
@@ -52,8 +61,11 @@ int luaO_fb2int (int x) {
 }
 
 
+/*
+** Computes ceil(log2(x))
+*/
 int luaO_ceillog2 (unsigned int x) {
-  static const lu_byte log_2[256] = {
+  static const lu_byte log_2[256] = {  /* log_2[i] = ceil(log2(i - 1)) */
     0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
     6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
     7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
@@ -98,6 +110,7 @@ static lua_Number numarith (lua_State *L, int op, lua_Number v1,
     case LUA_OPMUL: return luai_nummul(L, v1, v2);
     case LUA_OPDIV: return luai_numdiv(L, v1, v2);
     case LUA_OPPOW: return luai_numpow(L, v1, v2);
+    case LUA_OPIDIV: return luai_numidiv(L, v1, v2);
     case LUA_OPUNM: return luai_numunm(L, v1);
     case LUA_OPMOD: {
       lua_Number m;
@@ -112,9 +125,9 @@ static lua_Number numarith (lua_State *L, int op, lua_Number v1,
 void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2,
                  TValue *res) {
   switch (op) {
-    case LUA_OPIDIV: case LUA_OPBAND: case LUA_OPBOR:
+    case LUA_OPBAND: case LUA_OPBOR: case LUA_OPBXOR:
-    case LUA_OPBXOR: case LUA_OPSHL: case LUA_OPSHR:
+    case LUA_OPSHL: case LUA_OPSHR:
-    case LUA_OPBNOT: {  /* operates only on integers */
+    case LUA_OPBNOT: {  /* operate only on integers */
       lua_Integer i1; lua_Integer i2;
       if (tointeger(p1, &i1) && tointeger(p2, &i2)) {
         setivalue(res, intarith(L, op, i1, i2));
@@ -145,13 +158,13 @@ void luaO_arith (lua_State *L, int op, const TValue *p1, const TValue *p2,
   }
   /* could not perform raw operation; try metamethod */
   lua_assert(L != NULL);  /* should not fail when folding (compile time) */
-  luaT_trybinTM(L, p1, p2, res, cast(TMS, op - LUA_OPADD + TM_ADD));
+  luaT_trybinTM(L, p1, p2, res, cast(TMS, (op - LUA_OPADD) + TM_ADD));
 }
 
 
 int luaO_hexavalue (int c) {
   if (lisdigit(c)) return c - '0';
-  else return ltolower(c) - 'a' + 10;
+  else return (ltolower(c) - 'a') + 10;
 }
 
 
@@ -162,26 +175,14 @@ static int isneg (const char **s) {
 }
 
 
+
 /*
-** {======================================================
+** {==================================================================
-** lua_strx2number converts an hexadecimal numeric string to a number.
+** Lua's implementation for 'lua_strx2number'
-** In C99, 'strtod' does both conversions. C89, however, has no function
+** ===================================================================
-** to convert floating hexadecimal strings to numbers. For these
-** systems, you can leave 'lua_strx2number' undefined and Lua will
-** provide its own implementation.
-** =======================================================
 */
-#if !defined(lua_strx2number)		/* { */
 
-#if defined(LUA_USE_C99)		/* { */
+#if !defined(lua_strx2number)
-
-#define lua_strx2number(s,p)    lua_str2number(s,p)
-
-#else					/* }{ */
-
-/* Lua's implementation for 'lua_strx2number' */
-
-#include <math.h>
 
 /* maximum number of significant digits to read (to avoid overflows
    even with single floats) */
@@ -192,35 +193,30 @@ static int isneg (const char **s) {
 ** C99 specification for 'strtod'
 */
 static lua_Number lua_strx2number (const char *s, char **endptr) {
+  int dot = lua_getlocaledecpoint();
   lua_Number r = 0.0;  /* result (accumulator) */
   int sigdig = 0;  /* number of significant digits */
   int nosigdig = 0;  /* number of non-significant digits */
   int e = 0;  /* exponent correction */
-  int neg = 0;  /* 1 if number is negative */
+  int neg;  /* 1 if number is negative */
-  int dot = 0;  /* true after seen a dot */
+  int hasdot = 0;  /* true after seen a dot */
   *endptr = cast(char *, s);  /* nothing is valid yet */
   while (lisspace(cast_uchar(*s))) s++;  /* skip initial spaces */
   neg = isneg(&s);  /* check signal */
   if (!(*s == '0' && (*(s + 1) == 'x' || *(s + 1) == 'X')))  /* check '0x' */
     return 0.0;  /* invalid format (no '0x') */
   for (s += 2; ; s++) {  /* skip '0x' and read numeral */
-    if (*s == '.') {
+    if (*s == dot) {
-      if (dot) break;  /* second dot? stop loop */
+      if (hasdot) break;  /* second dot? stop loop */
-      else dot = 1;
+      else hasdot = 1;
     }
     else if (lisxdigit(cast_uchar(*s))) {
-      if (sigdig == 0 && *s == '0') {  /* non-significant zero? */
+      if (sigdig == 0 && *s == '0')  /* non-significant digit (zero)? */
         nosigdig++;
-        if (dot) e--;  /* zero after dot? correct exponent */
+      else if (++sigdig <= MAXSIGDIG)  /* can read it without overflow? */
-      }
+          r = (r * cast_num(16.0)) + luaO_hexavalue(*s);
-      else {
+      else e++; /* too many digits; ignore, but still count for exponent */
-        if (++sigdig <= MAXSIGDIG) {  /* can read it without overflow? */
+      if (hasdot) e--;  /* decimal digit? correct exponent */
-          r = (r * cast_num(16.0)) + luaO_hexavalue(cast_uchar(*s));
-          if (dot) e--;  /* decimal digit */
-        }
-        else  /* too many digits; ignore */ 
-          if (!dot) e++;  /* still count it for exponent */
-      }
     }
     else break;  /* neither a dot nor a digit */
   }
@@ -245,10 +241,7 @@ static lua_Number lua_strx2number (const char *s, char **endptr) {
   return l_mathop(ldexp)(r, e);
 }
 
-#endif					/* } */
+#endif
-
-#endif					/* } */
-
 /* }====================================================== */
 
 
@@ -260,7 +253,7 @@ static const char *l_str2d (const char *s, lua_Number *result) {
     *result = lua_strx2number(s, &endptr);
   else
     *result = lua_str2number(s, &endptr);
-  if (endptr == s) return 0;  /* nothing recognized */
+  if (endptr == s) return NULL;  /* nothing recognized */
   while (lisspace(cast_uchar(*endptr))) endptr++;
   return (*endptr == '\0' ? endptr : NULL);  /* OK if no trailing characters */
 }
@@ -276,13 +269,13 @@ static const char *l_str2int (const char *s, lua_Integer *result) {
       (s[1] == 'x' || s[1] == 'X')) {  /* hex? */
     s += 2;  /* skip '0x' */
     for (; lisxdigit(cast_uchar(*s)); s++) {
-      a = a * 16 + luaO_hexavalue(cast_uchar(*s));
+      a = a * 16 + luaO_hexavalue(*s);
       empty = 0;
     }
   }
   else {  /* decimal */
     for (; lisdigit(cast_uchar(*s)); s++) {
-      a = a * 10 + luaO_hexavalue(cast_uchar(*s));
+      a = a * 10 + *s - '0';
       empty = 0;
     }
   }
@@ -306,7 +299,7 @@ size_t luaO_str2num (const char *s, TValue *o) {
   }
   else
     return 0;  /* conversion failed */
-  return (e - s + 1);  /* success; return string size */
+  return (e - s) + 1;  /* success; return string size */
 }
 
 
@@ -317,8 +310,8 @@ int luaO_utf8esc (char *buff, unsigned long x) {
     buff[UTF8BUFFSZ - 1] = cast(char, x);
   else {  /* need continuation bytes */
     unsigned int mfb = 0x3f;  /* maximum that fits in first byte */
-    do {
+    do {  /* add continuation bytes */
-      buff[UTF8BUFFSZ - (n++)] = 0x80 | (x & 0x3f);  /* add continuation byte */
+      buff[UTF8BUFFSZ - (n++)] = cast(char, 0x80 | (x & 0x3f));
       x >>= 6;  /* remove added bits */
       mfb >>= 1;  /* now there is one less bit available in first byte */
     } while (x > mfb);  /* still needs continuation byte? */
@@ -345,7 +338,7 @@ void luaO_tostring (lua_State *L, StkId obj) {
     len = lua_number2str(buff, fltvalue(obj));
 #if !defined(LUA_COMPAT_FLOATSTRING)
     if (buff[strspn(buff, "-0123456789")] == '\0') {  /* looks like an int? */
-      buff[len++] = '.';
+      buff[len++] = lua_getlocaledecpoint();
       buff[len++] = '0';  /* adds '.0' to result */
     }
 #endif
@@ -399,7 +392,7 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
         break;
       }
       case 'p': {
-        char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */
+        char buff[4*sizeof(void *) + 8]; /* should be enough space for a '%p' */
         int l = sprintf(buff, "%p", va_arg(argp, void *));
         pushstr(L, buff, l);
         break;

lobject.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.h,v 2.102 2014/09/04 18:15:29 roberto Exp roberto $
+** $Id: lobject.h,v 2.110 2015/04/02 21:10:53 roberto Exp roberto $
 ** Type definitions for Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -35,8 +35,6 @@
 ** bit 6: whether value is collectable
 */
 
-#define VARBITS		(3 << 4)
-
 
 /*
 ** LUA_TFUNCTION variants:
@@ -154,6 +152,8 @@ typedef struct lua_TValue TValue;
 /* Macros to access values */
 #define ivalue(o)	check_exp(ttisinteger(o), val_(o).i)
 #define fltvalue(o)	check_exp(ttisfloat(o), val_(o).n)
+#define nvalue(o)	check_exp(ttisnumber(o), \
+	(ttisinteger(o) ? cast_num(ivalue(o)) : fltvalue(o)))
 #define gcvalue(o)	check_exp(iscollectable(o), val_(o).gc)
 #define pvalue(o)	check_exp(ttislightuserdata(o), val_(o).p)
 #define tsvalue(o)	check_exp(ttisstring(o), gco2ts(val_(o).gc))
@@ -188,9 +188,15 @@ typedef struct lua_TValue TValue;
 #define setfltvalue(obj,x) \
   { TValue *io=(obj); val_(io).n=(x); settt_(io, LUA_TNUMFLT); }
 
+#define chgfltvalue(obj,x) \
+  { TValue *io=(obj); lua_assert(ttisfloat(io)); val_(io).n=(x); }
+
 #define setivalue(obj,x) \
   { TValue *io=(obj); val_(io).i=(x); settt_(io, LUA_TNUMINT); }
 
+#define chgivalue(obj,x) \
+  { TValue *io=(obj); lua_assert(ttisinteger(io)); val_(io).i=(x); }
+
 #define setnilvalue(obj) settt_(obj, LUA_TNIL)
 
 #define setfvalue(obj,x) \
@@ -301,9 +307,12 @@ typedef TValue *StkId;  /* index to stack elements */
 typedef struct TString {
   CommonHeader;
   lu_byte extra;  /* reserved words for short strings; "has hash" for longs */
+  lu_byte shrlen;  /* length for short strings */
   unsigned int hash;
-  size_t len;  /* number of characters in string */
+  union {
-  struct TString *hnext;  /* linked list for hash table */
+    size_t lnglen;  /* length for long strings */
+    struct TString *hnext;  /* linked list for hash table */
+  } u;
 } TString;
 
 
@@ -327,6 +336,12 @@ typedef union UTString {
 /* get the actual string (array of bytes) from a Lua value */
 #define svalue(o)       getstr(tsvalue(o))
 
+/* get string length from 'TString *s' */
+#define tsslen(s)	((s)->tt == LUA_TSHRSTR ? (s)->shrlen : (s)->u.lnglen)
+
+/* get string length from 'TValue *o' */
+#define vslen(o)	tsslen(tsvalue(o))
+
 
 /*
 ** Header for userdata; memory area follows the end of this structure
@@ -345,7 +360,7 @@ typedef struct Udata {
 ** Ensures that address after this type is always fully aligned.
 */
 typedef union UUdata {
-  L_Umaxalign dummy;  /* ensures maximum alignment for `local' udata */
+  L_Umaxalign dummy;  /* ensures maximum alignment for 'local' udata */
   Udata uv;
 } UUdata;
 
@@ -359,13 +374,13 @@ typedef union UUdata {
 
 #define setuservalue(L,u,o) \
 	{ const TValue *io=(o); Udata *iu = (u); \
-	  iu->user_ = io->value_; iu->ttuv_ = io->tt_; \
+	  iu->user_ = io->value_; iu->ttuv_ = rttype(io); \
 	  checkliveness(G(L),io); }
 
 
 #define getuservalue(L,u,o) \
 	{ TValue *io=(o); const Udata *iu = (u); \
-	  io->value_ = iu->user_; io->tt_ = iu->ttuv_; \
+	  io->value_ = iu->user_; settt_(io, iu->ttuv_); \
 	  checkliveness(G(L),io); }
 
 
@@ -374,7 +389,7 @@ typedef union UUdata {
 */
 typedef struct Upvaldesc {
   TString *name;  /* upvalue name (for debug information) */
-  lu_byte instack;  /* whether it is in stack */
+  lu_byte instack;  /* whether it is in stack (register) */
   lu_byte idx;  /* index of upvalue (in stack or in outer function's list) */
 } Upvaldesc;
 
@@ -397,22 +412,22 @@ typedef struct Proto {
   CommonHeader;
   lu_byte numparams;  /* number of fixed parameters */
   lu_byte is_vararg;
-  lu_byte maxstacksize;  /* maximum stack used by this function */
+  lu_byte maxstacksize;  /* number of registers needed by this function */
   int sizeupvalues;  /* size of 'upvalues' */
-  int sizek;  /* size of `k' */
+  int sizek;  /* size of 'k' */
   int sizecode;
   int sizelineinfo;
-  int sizep;  /* size of `p' */
+  int sizep;  /* size of 'p' */
   int sizelocvars;
   int linedefined;
   int lastlinedefined;
   TValue *k;  /* constants used by the function */
-  Instruction *code;
+  Instruction *code;  /* opcodes */
   struct Proto **p;  /* functions defined inside the function */
   int *lineinfo;  /* map from opcodes to source lines (debug information) */
   LocVar *locvars;  /* information about local variables (debug information) */
   Upvaldesc *upvalues;  /* upvalue information */
-  struct LClosure *cache;  /* last created closure with this prototype */
+  struct LClosure *cache;  /* last-created closure with this prototype */
   TString  *source;  /* used for debug information */
   GCObject *gclist;
 } Proto;
@@ -471,7 +486,7 @@ typedef union TKey {
 
 
 /* copy a value into a key without messing up field 'next' */
-#define setkey(L,key,obj) \
+#define setnodekey(L,key,obj) \
 	{ TKey *k_=(key); const TValue *io_=(obj); \
 	  k_->nk.value_ = io_->value_; k_->nk.tt_ = io_->tt_; \
 	  (void)L; checkliveness(G(L),io_); }
@@ -486,8 +501,8 @@ typedef struct Node {
 typedef struct Table {
   CommonHeader;
   lu_byte flags;  /* 1<<p means tagmethod(p) is not present */
-  lu_byte lsizenode;  /* log2 of size of `node' array */
+  lu_byte lsizenode;  /* log2 of size of 'node' array */
-  unsigned int sizearray;  /* size of `array' array */
+  unsigned int sizearray;  /* size of 'array' array */
   TValue *array;  /* array part */
   Node *node;
   Node *lastfree;  /* any free position is before this position */
@@ -498,7 +513,7 @@ typedef struct Table {
 
 
 /*
-** `module' operation for hashing (size is always a power of 2)
+** 'module' operation for hashing (size is always a power of 2)
 */
 #define lmod(s,size) \
 	(check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1)))))

lopcodes.c

@@ -1,13 +1,16 @@
 /*
-** $Id: lopcodes.c,v 1.52 2013/12/18 14:12:03 roberto Exp roberto $
+** $Id: lopcodes.c,v 1.54 2014/11/02 19:19:04 roberto Exp roberto $
 ** Opcodes for Lua virtual machine
 ** See Copyright Notice in lua.h
 */
 
-
 #define lopcodes_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <stddef.h>
 
 #include "lopcodes.h"
 

lopcodes.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lopcodes.h,v 1.146 2013/12/30 20:47:58 roberto Exp roberto $
+** $Id: lopcodes.h,v 1.147 2014/10/20 18:29:55 roberto Exp roberto $
 ** Opcodes for Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -14,12 +14,12 @@
   We assume that instructions are unsigned numbers.
   All instructions have an opcode in the first 6 bits.
   Instructions can have the following fields:
-	`A' : 8 bits
+	'A' : 8 bits
-	`B' : 9 bits
+	'B' : 9 bits
-	`C' : 9 bits
+	'C' : 9 bits
 	'Ax' : 26 bits ('A', 'B', and 'C' together)
-	`Bx' : 18 bits (`B' and `C' together)
+	'Bx' : 18 bits ('B' and 'C' together)
-	`sBx' : signed Bx
+	'sBx' : signed Bx
 
   A signed argument is represented in excess K; that is, the number
   value is the unsigned value minus K. K is exactly the maximum value
@@ -58,7 +58,7 @@ enum OpMode {iABC, iABx, iAsBx, iAx};  /* basic instruction format */
 */
 #if SIZE_Bx < LUAI_BITSINT-1
 #define MAXARG_Bx        ((1<<SIZE_Bx)-1)
-#define MAXARG_sBx        (MAXARG_Bx>>1)         /* `sBx' is signed */
+#define MAXARG_sBx        (MAXARG_Bx>>1)         /* 'sBx' is signed */
 #else
 #define MAXARG_Bx        MAX_INT
 #define MAXARG_sBx        MAX_INT
@@ -76,10 +76,10 @@ enum OpMode {iABC, iABx, iAsBx, iAx};  /* basic instruction format */
 #define MAXARG_C        ((1<<SIZE_C)-1)
 
 
-/* creates a mask with `n' 1 bits at position `p' */
+/* creates a mask with 'n' 1 bits at position 'p' */
 #define MASK1(n,p)	((~((~(Instruction)0)<<(n)))<<(p))
 
-/* creates a mask with `n' 0 bits at position `p' */
+/* creates a mask with 'n' 0 bits at position 'p' */
 #define MASK0(n,p)	(~MASK1(n,p))
 
 /*
@@ -238,16 +238,16 @@ OP_EXTRAARG/*	Ax	extra (larger) argument for previous opcode	*/
 
 /*===========================================================================
   Notes:
-  (*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then `top' is
+  (*) In OP_CALL, if (B == 0) then B = top. If (C == 0), then 'top' is
   set to last_result+1, so next open instruction (OP_CALL, OP_RETURN,
-  OP_SETLIST) may use `top'.
+  OP_SETLIST) may use 'top'.
 
   (*) In OP_VARARG, if (B == 0) then use actual number of varargs and
   set top (like in OP_CALL with C == 0).
 
-  (*) In OP_RETURN, if (B == 0) then return up to `top'.
+  (*) In OP_RETURN, if (B == 0) then return up to 'top'.
 
-  (*) In OP_SETLIST, if (B == 0) then B = `top'; if (C == 0) then next
+  (*) In OP_SETLIST, if (B == 0) then B = 'top'; if (C == 0) then next
   'instruction' is EXTRAARG(real C).
 
   (*) In OP_LOADKX, the next 'instruction' is always EXTRAARG.
@@ -255,7 +255,7 @@ OP_EXTRAARG/*	Ax	extra (larger) argument for previous opcode	*/
   (*) For comparisons, A specifies what condition the test should accept
   (true or false).
 
-  (*) All `skips' (pc++) assume that next instruction is a jump.
+  (*) All 'skips' (pc++) assume that next instruction is a jump.
 
 ===========================================================================*/
 

loslib.c

@@ -1,9 +1,14 @@
 /*
-** $Id: loslib.c,v 1.48 2014/10/08 19:57:31 roberto Exp roberto $
+** $Id: loslib.c,v 1.56 2015/02/09 17:41:54 roberto Exp roberto $
 ** Standard Operating System library
 ** See Copyright Notice in lua.h
 */
 
+#define loslib_c
+#define LUA_LIB
+
+#include "lprefix.h"
+
 
 #include <errno.h>
 #include <locale.h>
@@ -11,23 +16,22 @@
 #include <string.h>
 #include <time.h>
 
-#define loslib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
 #include "lualib.h"
 
 
-#if !defined(LUA_STRFTIMEOPTIONS)	/* { */
 /*
+** {==================================================================
 ** list of valid conversion specifiers for the 'strftime' function
+** ===================================================================
 */
+#if !defined(LUA_STRFTIMEOPTIONS)	/* { */
 
-#if !defined(LUA_USE_POSIX)
+#if defined(LUA_USE_C89)
 #define LUA_STRFTIMEOPTIONS	{ "aAbBcdHIjmMpSUwWxXyYz%", "" }
-#else
+#else  /* C99 specification */
 #define LUA_STRFTIMEOPTIONS \
 	{ "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%", "", \
 	  "E", "cCxXyY",  \
@@ -35,8 +39,14 @@
 #endif
 
 #endif					/* } */
+/* }================================================================== */
 
 
+/*
+** {==================================================================
+** Configuration for time-related stuff
+** ===================================================================
+*/
 
 #if !defined(l_time_t)		/* { */
 /*
@@ -49,15 +59,41 @@
 #endif				/* } */
 
 
-
+#if !defined(l_gmtime)		/* { */
-#if !defined(lua_tmpnam)	/* { */
 /*
-** By default, Lua uses tmpnam except when POSIX is available, where it
+** By default, Lua uses gmtime/localtime, except when POSIX is available,
-** uses mkstemp.
+** where it uses gmtime_r/localtime_r
 */
 
 #if defined(LUA_USE_POSIX)	/* { */
 
+#define l_gmtime(t,r)		gmtime_r(t,r)
+#define l_localtime(t,r)	localtime_r(t,r)
+
+#else				/* }{ */
+
+/* ISO C definitions */
+#define l_gmtime(t,r)		((void)(r)->tm_sec, gmtime(t))
+#define l_localtime(t,r)  	((void)(r)->tm_sec, localtime(t))
+
+#endif				/* } */
+
+#endif				/* } */
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Configuration for 'tmpnam':
+** By default, Lua uses tmpnam except when POSIX is available, where
+** it uses mkstemp.
+** ===================================================================
+*/
+#if !defined(lua_tmpnam)	/* { */
+
+#if defined(LUA_USE_POSIX)	/* { */
+
 #include <unistd.h>
 
 #define LUA_TMPNAMBUFSIZE	32
@@ -74,38 +110,17 @@
 
 #else				/* }{ */
 
-/* ANSI definitions */
+/* ISO C definitions */
 #define LUA_TMPNAMBUFSIZE	L_tmpnam
 #define lua_tmpnam(b,e)		{ e = (tmpnam(b) == NULL); }
 
 #endif				/* } */
 
 #endif				/* } */
+/* }================================================================== */
 
 
 
-#if !defined(l_gmtime)		/* { */
-/*
-** By default, Lua uses gmtime/localtime, except when POSIX is available,
-** where it uses gmtime_r/localtime_r
-*/
-
-#if defined(LUA_USE_POSIX)	/* { */
-
-#define l_gmtime(t,r)		gmtime_r(t,r)
-#define l_localtime(t,r)	localtime_r(t,r)
-
-#else				/* }{ */
-
-/* ANSI definitions */
-#define l_gmtime(t,r)		((void)r, gmtime(t))
-#define l_localtime(t,r)  	((void)r, localtime(t))
-
-#endif				/* } */
-
-#endif				/* } */
-
-
 
 static int os_execute (lua_State *L) {
   const char *cmd = luaL_optstring(L, 1, NULL);
@@ -227,7 +242,7 @@ static int os_date (lua_State *L) {
   struct tm tmr, *stm;
   if (*s == '!') {  /* UTC? */
     stm = l_gmtime(&t, &tmr);
-    s++;  /* skip `!' */
+    s++;  /* skip '!' */
   }
   else
     stm = l_localtime(&t, &tmr);
@@ -285,7 +300,7 @@ static int os_time (lua_State *L) {
     t = mktime(&ts);
   }
   if (t != (time_t)(l_timet)t)
-    luaL_error(L, "time result cannot be represented in this Lua instalation");
+    luaL_error(L, "time result cannot be represented in this Lua installation");
   else if (t == (time_t)(-1))
     lua_pushnil(L);
   else
@@ -295,8 +310,9 @@ static int os_time (lua_State *L) {
 
 
 static int os_difftime (lua_State *L) {
-  double res = difftime((l_checktime(L, 1)), (l_checktime(L, 2)));
+  time_t t1 = l_checktime(L, 1);
-  lua_pushnumber(L, (lua_Number)res);
+  time_t t2 = l_checktime(L, 2);
+  lua_pushnumber(L, (lua_Number)difftime(t1, t2));
   return 1;
 }
 

lparser.c

@@ -1,15 +1,17 @@
 /*
-** $Id: lparser.c,v 2.142 2014/07/21 16:02:10 roberto Exp roberto $
+** $Id: lparser.c,v 2.146 2014/11/27 18:41:43 roberto Exp roberto $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
 
-
-#include <string.h>
-
 #define lparser_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <string.h>
+
 #include "lua.h"
 
 #include "lcode.h"
@@ -45,11 +47,11 @@
 */
 typedef struct BlockCnt {
   struct BlockCnt *previous;  /* chain */
-  short firstlabel;  /* index of first label in this block */
+  int firstlabel;  /* index of first label in this block */
-  short firstgoto;  /* index of first pending goto in this block */
+  int firstgoto;  /* index of first pending goto in this block */
   lu_byte nactvar;  /* # active locals outside the block */
   lu_byte upval;  /* true if some variable in the block is an upvalue */
-  lu_byte isloop;  /* true if `block' is a loop */
+  lu_byte isloop;  /* true if 'block' is a loop */
 } BlockCnt;
 
 
@@ -63,7 +65,7 @@ static void expr (LexState *ls, expdesc *v);
 
 /* semantic error */
 static l_noret semerror (LexState *ls, const char *msg) {
-  ls->t.token = 0;  /* remove 'near to' from final message */
+  ls->t.token = 0;  /* remove "near <token>" from final message */
   luaX_syntaxerror(ls, msg);
 }
 
@@ -384,7 +386,7 @@ static int newlabelentry (LexState *ls, Labellist *l, TString *name,
   l->arr[n].line = line;
   l->arr[n].nactvar = ls->fs->nactvar;
   l->arr[n].pc = pc;
-  l->n++;
+  l->n = n + 1;
   return n;
 }
 
@@ -406,7 +408,7 @@ static void findgotos (LexState *ls, Labeldesc *lb) {
 
 
 /*
-** "export" pending gotos to outer level, to check them against
+** export pending gotos to outer level, to check them against
 ** outer labels; if the block being exited has upvalues, and
 ** the goto exits the scope of any variable (which can be the
 ** upvalue), close those variables being exited.
@@ -442,7 +444,7 @@ static void enterblock (FuncState *fs, BlockCnt *bl, lu_byte isloop) {
 
 
 /*
-** create a label named "break" to resolve break statements
+** create a label named 'break' to resolve break statements
 */
 static void breaklabel (LexState *ls) {
   TString *n = luaS_new(ls->L, "break");
@@ -574,7 +576,7 @@ static void close_func (LexState *ls) {
 /*
 ** check whether current token is in the follow set of a block.
 ** 'until' closes syntactical blocks, but do not close scope,
-** so it handled in separate.
+** so it is handled in separate.
 */
 static int block_follow (LexState *ls, int withuntil) {
   switch (ls->t.token) {
@@ -588,7 +590,7 @@ static int block_follow (LexState *ls, int withuntil) {
 
 
 static void statlist (LexState *ls) {
-  /* statlist -> { stat [`;'] } */
+  /* statlist -> { stat [';'] } */
   while (!block_follow(ls, 1)) {
     if (ls->t.token == TK_RETURN) {
       statement(ls);
@@ -629,14 +631,14 @@ static void yindex (LexState *ls, expdesc *v) {
 struct ConsControl {
   expdesc v;  /* last list item read */
   expdesc *t;  /* table descriptor */
-  int nh;  /* total number of `record' elements */
+  int nh;  /* total number of 'record' elements */
   int na;  /* total number of array elements */
   int tostore;  /* number of array elements pending to be stored */
 };
 
 
 static void recfield (LexState *ls, struct ConsControl *cc) {
-  /* recfield -> (NAME | `['exp1`]') = exp1 */
+  /* recfield -> (NAME | '['exp1']') = exp1 */
   FuncState *fs = ls->fs;
   int reg = ls->fs->freereg;
   expdesc key, val;
@@ -743,12 +745,12 @@ static void constructor (LexState *ls, expdesc *t) {
 
 
 static void parlist (LexState *ls) {
-  /* parlist -> [ param { `,' param } ] */
+  /* parlist -> [ param { ',' param } ] */
   FuncState *fs = ls->fs;
   Proto *f = fs->f;
   int nparams = 0;
   f->is_vararg = 0;
-  if (ls->t.token != ')') {  /* is `parlist' not empty? */
+  if (ls->t.token != ')') {  /* is 'parlist' not empty? */
     do {
       switch (ls->t.token) {
         case TK_NAME: {  /* param -> NAME */
@@ -756,7 +758,7 @@ static void parlist (LexState *ls) {
           nparams++;
           break;
         }
-        case TK_DOTS: {  /* param -> `...' */
+        case TK_DOTS: {  /* param -> '...' */
           luaX_next(ls);
           f->is_vararg = 1;
           break;
@@ -772,7 +774,7 @@ static void parlist (LexState *ls) {
 
 
 static void body (LexState *ls, expdesc *e, int ismethod, int line) {
-  /* body ->  `(' parlist `)' block END */
+  /* body ->  '(' parlist ')' block END */
   FuncState new_fs;
   BlockCnt bl;
   new_fs.f = addprototype(ls);
@@ -794,7 +796,7 @@ static void body (LexState *ls, expdesc *e, int ismethod, int line) {
 
 
 static int explist (LexState *ls, expdesc *v) {
-  /* explist -> expr { `,' expr } */
+  /* explist -> expr { ',' expr } */
   int n = 1;  /* at least one expression */
   expr(ls, v);
   while (testnext(ls, ',')) {
@@ -811,7 +813,7 @@ static void funcargs (LexState *ls, expdesc *f, int line) {
   expdesc args;
   int base, nparams;
   switch (ls->t.token) {
-    case '(': {  /* funcargs -> `(' [ explist ] `)' */
+    case '(': {  /* funcargs -> '(' [ explist ] ')' */
       luaX_next(ls);
       if (ls->t.token == ')')  /* arg list is empty? */
         args.k = VVOID;
@@ -828,7 +830,7 @@ static void funcargs (LexState *ls, expdesc *f, int line) {
     }
     case TK_STRING: {  /* funcargs -> STRING */
       codestring(ls, &args, ls->t.seminfo.ts);
-      luaX_next(ls);  /* must use `seminfo' before `next' */
+      luaX_next(ls);  /* must use 'seminfo' before 'next' */
       break;
     }
     default: {
@@ -894,14 +896,14 @@ static void suffixedexp (LexState *ls, expdesc *v) {
         fieldsel(ls, v);
         break;
       }
-      case '[': {  /* `[' exp1 `]' */
+      case '[': {  /* '[' exp1 ']' */
         expdesc key;
         luaK_exp2anyregup(fs, v);
         yindex(ls, &key);
         luaK_indexed(fs, v, &key);
         break;
       }
-      case ':': {  /* `:' NAME funcargs */
+      case ':': {  /* ':' NAME funcargs */
         expdesc key;
         luaX_next(ls);
         checkname(ls, &key);
@@ -1035,7 +1037,7 @@ static const struct {
 
 /*
 ** subexpr -> (simpleexp | unop subexpr) { binop subexpr }
-** where `binop' is any binary operator with a priority higher than `limit'
+** where 'binop' is any binary operator with a priority higher than 'limit'
 */
 static BinOpr subexpr (LexState *ls, expdesc *v, int limit) {
   BinOpr op;
@@ -1049,7 +1051,7 @@ static BinOpr subexpr (LexState *ls, expdesc *v, int limit) {
     luaK_prefix(ls->fs, uop, v, line);
   }
   else simpleexp(ls, v);
-  /* expand while operators have priorities higher than `limit' */
+  /* expand while operators have priorities higher than 'limit' */
   op = getbinopr(ls->t.token);
   while (op != OPR_NOBINOPR && priority[op].left > limit) {
     expdesc v2;
@@ -1149,7 +1151,7 @@ static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) {
                     "C levels");
     assignment(ls, &nv, nvars+1);
   }
-  else {  /* assignment -> `=' explist */
+  else {  /* assignment -> '=' explist */
     int nexps;
     checknext(ls, '=');
     nexps = explist(ls, &e);
@@ -1173,7 +1175,7 @@ static int cond (LexState *ls) {
   /* cond -> exp */
   expdesc v;
   expr(ls, &v);  /* read condition */
-  if (v.k == VNIL) v.k = VFALSE;  /* `falses' are all equal here */
+  if (v.k == VNIL) v.k = VFALSE;  /* 'falses' are all equal here */
   luaK_goiftrue(ls->fs, &v);
   return v.f;
 }
@@ -1362,7 +1364,7 @@ static void forstat (LexState *ls, int line) {
   TString *varname;
   BlockCnt bl;
   enterblock(fs, &bl, 1);  /* scope for loop and control variables */
-  luaX_next(ls);  /* skip `for' */
+  luaX_next(ls);  /* skip 'for' */
   varname = str_checkname(ls);  /* first variable name */
   switch (ls->t.token) {
     case '=': fornum(ls, varname, line); break;
@@ -1370,7 +1372,7 @@ static void forstat (LexState *ls, int line) {
     default: luaX_syntaxerror(ls, "'=' or 'in' expected");
   }
   check_match(ls, TK_END, TK_FOR, line);
-  leaveblock(fs);  /* loop scope (`break' jumps to this point) */
+  leaveblock(fs);  /* loop scope ('break' jumps to this point) */
 }
 
 
@@ -1400,7 +1402,7 @@ static void test_then_block (LexState *ls, int *escapelist) {
     enterblock(fs, &bl, 0);
     jf = v.f;
   }
-  statlist(ls);  /* `then' part */
+  statlist(ls);  /* 'then' part */
   leaveblock(fs);
   if (ls->t.token == TK_ELSE ||
       ls->t.token == TK_ELSEIF)  /* followed by 'else'/'elseif'? */
@@ -1417,7 +1419,7 @@ static void ifstat (LexState *ls, int line) {
   while (ls->t.token == TK_ELSEIF)
     test_then_block(ls, &escapelist);  /* ELSEIF cond THEN block */
   if (testnext(ls, TK_ELSE))
-    block(ls);  /* `else' part */
+    block(ls);  /* 'else' part */
   check_match(ls, TK_END, TK_IF, line);
   luaK_patchtohere(fs, escapelist);  /* patch escape list to 'if' end */
 }
@@ -1435,7 +1437,7 @@ static void localfunc (LexState *ls) {
 
 
 static void localstat (LexState *ls) {
-  /* stat -> LOCAL NAME {`,' NAME} [`=' explist] */
+  /* stat -> LOCAL NAME {',' NAME} ['=' explist] */
   int nvars = 0;
   int nexps;
   expdesc e;
@@ -1455,7 +1457,7 @@ static void localstat (LexState *ls) {
 
 
 static int funcname (LexState *ls, expdesc *v) {
-  /* funcname -> NAME {fieldsel} [`:' NAME] */
+  /* funcname -> NAME {fieldsel} [':' NAME] */
   int ismethod = 0;
   singlevar(ls, v);
   while (ls->t.token == '.')
@@ -1476,7 +1478,7 @@ static void funcstat (LexState *ls, int line) {
   ismethod = funcname(ls, &v);
   body(ls, &b, ismethod, line);
   luaK_storevar(ls->fs, &v, &b);
-  luaK_fixline(ls->fs, line);  /* definition `happens' in the first line */
+  luaK_fixline(ls->fs, line);  /* definition "happens" in the first line */
 }
 
 
@@ -1518,8 +1520,8 @@ static void retstat (LexState *ls) {
       if (nret == 1)  /* only one single value? */
         first = luaK_exp2anyreg(fs, &e);
       else {
-        luaK_exp2nextreg(fs, &e);  /* values must go to the `stack' */
+        luaK_exp2nextreg(fs, &e);  /* values must go to the stack */
-        first = fs->nactvar;  /* return all `active' values */
+        first = fs->nactvar;  /* return all active values */
         lua_assert(nret == fs->freereg - first);
       }
     }
@@ -1630,7 +1632,7 @@ LClosure *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff,
   incr_top(L);
   funcstate.f = cl->p = luaF_newproto(L);
   funcstate.f->source = luaS_new(L, name);  /* create and anchor TString */
-  luaC_objbarrier(L, funcstate.f, funcstate.f->source);
+  lua_assert(iswhite(funcstate.f));  /* do not need barrier here */
   lexstate.buff = buff;
   lexstate.dyd = dyd;
   dyd->actvar.n = dyd->gt.n = dyd->label.n = 0;

lparser.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lparser.h,v 1.72 2013/08/30 16:01:37 roberto Exp roberto $
+** $Id: lparser.h,v 1.73 2014/06/19 18:27:20 roberto Exp roberto $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
@@ -21,7 +21,7 @@ typedef enum {
   VNIL,
   VTRUE,
   VFALSE,
-  VK,		/* info = index of constant in `k' */
+  VK,		/* info = index of constant in 'k' */
   VKFLT,	/* nval = numerical float value */
   VKINT,	/* nval = numerical integer value */
   VNONRELOC,	/* info = result register */
@@ -50,8 +50,8 @@ typedef struct expdesc {
     lua_Number nval;  /* for VKFLT */
     lua_Integer ival;    /* for VKINT */
   } u;
-  int t;  /* patch list of `exit when true' */
+  int t;  /* patch list of 'exit when true' */
-  int f;  /* patch list of `exit when false' */
+  int f;  /* patch list of 'exit when false' */
 } expdesc;
 
 
@@ -100,11 +100,11 @@ typedef struct FuncState {
   struct FuncState *prev;  /* enclosing function */
   struct LexState *ls;  /* lexical state */
   struct BlockCnt *bl;  /* chain of current blocks */
-  int pc;  /* next position to code (equivalent to `ncode') */
+  int pc;  /* next position to code (equivalent to 'ncode') */
   int lasttarget;   /* 'label' of last 'jump label' */
-  int jpc;  /* list of pending jumps to `pc' */
+  int jpc;  /* list of pending jumps to 'pc' */
-  int nk;  /* number of elements in `k' */
+  int nk;  /* number of elements in 'k' */
-  int np;  /* number of elements in `p' */
+  int np;  /* number of elements in 'p' */
   int firstlocal;  /* index of first local var (in Dyndata array) */
   short nlocvars;  /* number of elements in 'f->locvars' */
   lu_byte nactvar;  /* number of active local variables */

lprefix.h

@@ -0,0 +1,45 @@
+/*
+** $Id: lprefix.h,v 1.1 2014/11/03 15:12:44 roberto Exp roberto $
+** Definitions for Lua code that must come before any other header file
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lprefix_h
+#define lprefix_h
+
+
+/*
+** Allows POSIX/XSI stuff
+*/
+#if !defined(LUA_USE_C89)	/* { */
+
+#if !defined(_XOPEN_SOURCE)
+#define _XOPEN_SOURCE           600
+#elif _XOPEN_SOURCE == 0
+#undef _XOPEN_SOURCE  /* use -D_XOPEN_SOURCE=0 to undefine it */
+#endif
+
+/*
+** Allows manipulation of large files in gcc and some other compilers
+*/
+#if !defined(LUA_32BITS) && !defined(_FILE_OFFSET_BITS)
+#define _LARGEFILE_SOURCE       1
+#define _FILE_OFFSET_BITS       64
+#endif
+
+#endif				/* } */
+
+
+/*
+** Windows stuff
+*/
+#if defined(_WIN32) 	/* { */
+
+#if !defined(_CRT_SECURE_NO_WARNINGS)
+#define _CRT_SECURE_NO_WARNINGS  /* avoid warnings about ISO C functions */
+#endif
+
+#endif			/* } */
+
+#endif
+

lstate.c

@@ -1,16 +1,18 @@
 /*
-** $Id: lstate.c,v 2.124 2014/07/24 14:00:16 roberto Exp roberto $
+** $Id: lstate.c,v 2.127 2014/11/02 19:33:33 roberto Exp roberto $
 ** Global State
 ** See Copyright Notice in lua.h
 */
 
+#define lstate_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
 
 #include <stddef.h>
 #include <string.h>
 
-#define lstate_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "lapi.h"
@@ -35,9 +37,6 @@
 #endif
 
 
-#define MEMERRMSG	"not enough memory"
-
-
 /*
 ** a macro to help the creation of a unique random seed when a state is
 ** created; the seed is used to randomize hashes.
@@ -72,9 +71,8 @@ typedef struct LG {
 
 
 /*
-** Compute an initial seed as random as possible. In ANSI, rely on
+** Compute an initial seed as random as possible. Rely on Address Space
-** Address Space Layout Randomization (if present) to increase
+** Layout Randomization (if present) to increase randomness..
-** randomness..
 */
 #define addbuff(b,p,e) \
   { size_t t = cast(size_t, e); \
@@ -199,12 +197,9 @@ static void f_luaopen (lua_State *L, void *ud) {
   UNUSED(ud);
   stack_init(L, L);  /* init stack */
   init_registry(L, g);
-  luaS_resize(L, MINSTRTABSIZE);  /* initial size of string table */
+  luaS_init(L);
   luaT_init(L);
   luaX_init(L);
-  /* pre-create memory-error message */
-  g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
-  luaC_fix(L, obj2gco(g->memerrmsg));  /* it should never be collected */
   g->gcrunning = 1;  /* allow gc */
   g->version = lua_version(NULL);
   luai_userstateopen(L);

lstate.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lstate.h,v 2.116 2014/10/06 21:34:34 roberto Exp roberto $
+** $Id: lstate.h,v 2.121 2015/04/10 17:56:25 roberto Exp roberto $
 ** Global State
 ** See Copyright Notice in lua.h
 */
@@ -21,10 +21,10 @@
 ** belong to one (and only one) of these lists, using field 'next' of
 ** the 'CommonHeader' for the link:
 **
-** allgc: all objects not marked for finalization;
+** 'allgc': all objects not marked for finalization;
-** finobj: all objects marked for finalization;
+** 'finobj': all objects marked for finalization;
-** tobefnz: all objects ready to be finalized; 
+** 'tobefnz': all objects ready to be finalized; 
-** fixedgc: all objects that are not to be collected (currently
+** 'fixedgc': all objects that are not to be collected (currently
 ** only small strings, such as reserved words).
 
 */
@@ -94,6 +94,7 @@ typedef struct CallInfo {
 #define CIST_YPCALL	(1<<4)	/* call is a yieldable protected call */
 #define CIST_TAIL	(1<<5)	/* call was tail called */
 #define CIST_HOOKYIELD	(1<<6)	/* last hook called yielded */
+#define CIST_LEQ	(1<<7)  /* using __lt for __le */
 
 #define isLua(ci)	((ci)->callstatus & CIST_LUA)
 
@@ -103,11 +104,11 @@ typedef struct CallInfo {
 
 
 /*
-** `global state', shared by all threads of this state
+** 'global state', shared by all threads of this state
 */
 typedef struct global_State {
   lua_Alloc frealloc;  /* function to reallocate memory */
-  void *ud;         /* auxiliary data to `frealloc' */
+  void *ud;         /* auxiliary data to 'frealloc' */
   lu_mem totalbytes;  /* number of bytes currently allocated - GCdebt */
   l_mem GCdebt;  /* bytes allocated not yet compensated by the collector */
   lu_mem GCmemtrav;  /* memory traversed by the GC */
@@ -133,18 +134,19 @@ typedef struct global_State {
   Mbuffer buff;  /* temporary buffer for string concatenation */
   unsigned int gcfinnum;  /* number of finalizers to call in each GC step */
   int gcpause;  /* size of pause between successive GCs */
-  int gcstepmul;  /* GC `granularity' */
+  int gcstepmul;  /* GC 'granularity' */
   lua_CFunction panic;  /* to be called in unprotected errors */
   struct lua_State *mainthread;
   const lua_Number *version;  /* pointer to version number */
   TString *memerrmsg;  /* memory-error message */
   TString *tmname[TM_N];  /* array with tag-method names */
   struct Table *mt[LUA_NUMTAGS];  /* metatables for basic types */
+  TString *strcache[STRCACHE_SIZE][1];  /* cache for strings in API */
 } global_State;
 
 
 /*
-** `per thread' state
+** 'per thread' state
 */
 struct lua_State {
   CommonHeader;

lstring.c

@@ -1,15 +1,17 @@
 /*
-** $Id: lstring.c,v 2.43 2014/07/18 14:46:47 roberto Exp roberto $
+** $Id: lstring.c,v 2.48 2015/03/25 13:42:19 roberto Exp roberto $
 ** String table (keeps all strings handled by Lua)
 ** See Copyright Notice in lua.h
 */
 
-
-#include <string.h>
-
 #define lstring_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <string.h>
+
 #include "lua.h"
 
 #include "ldebug.h"
@@ -20,6 +22,8 @@
 #include "lstring.h"
 
 
+#define MEMERRMSG       "not enough memory"
+
 
 /*
 ** Lua will use at most ~(2^LUAI_HASHLIMIT) bytes from a string to
@@ -34,10 +38,10 @@
 ** equality for long strings
 */
 int luaS_eqlngstr (TString *a, TString *b) {
-  size_t len = a->len;
+  size_t len = a->u.lnglen;
   lua_assert(a->tt == LUA_TLNGSTR && b->tt == LUA_TLNGSTR);
   return (a == b) ||  /* same instance or... */
-    ((len == b->len) &&  /* equal length and ... */
+    ((len == b->u.lnglen) &&  /* equal length and ... */
      (memcmp(getstr(a), getstr(b), len) == 0));  /* equal contents */
 }
 
@@ -67,9 +71,9 @@ void luaS_resize (lua_State *L, int newsize) {
     TString *p = tb->hash[i];
     tb->hash[i] = NULL;
     while (p) {  /* for each node in the list */
-      TString *hnext = p->hnext;  /* save next */
+      TString *hnext = p->u.hnext;  /* save next */
       unsigned int h = lmod(p->hash, newsize);  /* new position */
-      p->hnext = tb->hash[h];  /* chain it */
+      p->u.hnext = tb->hash[h];  /* chain it */
       tb->hash[h] = p;
       p = hnext;
     }
@@ -83,6 +87,34 @@ void luaS_resize (lua_State *L, int newsize) {
 }
 
 
+/*
+** Clear API string cache. (Entries cannot be empty, so fill them with
+** a non-collectable string.)
+*/
+void luaS_clearcache (global_State *g) {
+  int i;
+  for (i = 0; i < STRCACHE_SIZE; i++) {
+    if (iswhite(g->strcache[i][0]))  /* will entry be collected? */
+      g->strcache[i][0] = g->memerrmsg;  /* replace it with something fixed */
+  }
+}
+
+
+/*
+** Initialize the string table and the string cache
+*/
+void luaS_init (lua_State *L) {
+  global_State *g = G(L);
+  int i;
+  luaS_resize(L, MINSTRTABSIZE);  /* initial size of string table */
+  /* pre-create memory-error message */
+  g->memerrmsg = luaS_newliteral(L, MEMERRMSG);
+  luaC_fix(L, obj2gco(g->memerrmsg));  /* it should never be collected */
+  for (i = 0; i < STRCACHE_SIZE; i++)  /* fill cache with valid strings */
+    g->strcache[i][0] = g->memerrmsg;
+}
+
+
 
 /*
 ** creates a new string object
@@ -95,7 +127,6 @@ static TString *createstrobj (lua_State *L, const char *str, size_t l,
   totalsize = sizelstring(l);
   o = luaC_newobj(L, tag, totalsize);
   ts = gco2ts(o);
-  ts->len = l;
   ts->hash = h;
   ts->extra = 0;
   memcpy(getaddrstr(ts), str, l * sizeof(char));
@@ -108,8 +139,8 @@ void luaS_remove (lua_State *L, TString *ts) {
   stringtable *tb = &G(L)->strt;
   TString **p = &tb->hash[lmod(ts->hash, tb->size)];
   while (*p != ts)  /* find previous element */
-    p = &(*p)->hnext;
+    p = &(*p)->u.hnext;
-  *p = (*p)->hnext;  /* remove element from its list */
+  *p = (*p)->u.hnext;  /* remove element from its list */
   tb->nuse--;
 }
 
@@ -122,8 +153,8 @@ static TString *internshrstr (lua_State *L, const char *str, size_t l) {
   global_State *g = G(L);
   unsigned int h = luaS_hash(str, l, g->seed);
   TString **list = &g->strt.hash[lmod(h, g->strt.size)];
-  for (ts = *list; ts != NULL; ts = ts->hnext) {
+  for (ts = *list; ts != NULL; ts = ts->u.hnext) {
-    if (l == ts->len &&
+    if (l == ts->shrlen &&
         (memcmp(str, getstr(ts), l * sizeof(char)) == 0)) {
       /* found! */
       if (isdead(g, ts))  /* dead (but not collected yet)? */
@@ -136,7 +167,8 @@ static TString *internshrstr (lua_State *L, const char *str, size_t l) {
     list = &g->strt.hash[lmod(h, g->strt.size)];  /* recompute with new size */
   }
   ts = createstrobj(L, str, l, LUA_TSHRSTR, h);
-  ts->hnext = *list;
+  ts->shrlen = cast_byte(l);
+  ts->u.hnext = *list;
   *list = ts;
   g->strt.nuse++;
   return ts;
@@ -150,18 +182,32 @@ TString *luaS_newlstr (lua_State *L, const char *str, size_t l) {
   if (l <= LUAI_MAXSHORTLEN)  /* short string? */
     return internshrstr(L, str, l);
   else {
+    TString *ts;
     if (l + 1 > (MAX_SIZE - sizeof(TString))/sizeof(char))
       luaM_toobig(L);
-    return createstrobj(L, str, l, LUA_TLNGSTR, G(L)->seed);
+    ts = createstrobj(L, str, l, LUA_TLNGSTR, G(L)->seed);
+    ts->u.lnglen = l;
+    return ts;
   }
 }
 
 
 /*
-** new zero-terminated string
+** Create or reuse a zero-terminated string, first checking in the
+** cache (using the string address as a key). The cache can contain
+** only zero-terminated strings, so it is safe to use 'strcmp' to
+** check hits.
 */
 TString *luaS_new (lua_State *L, const char *str) {
-  return luaS_newlstr(L, str, strlen(str));
+  unsigned int i = point2uint(str) % STRCACHE_SIZE;  /* hash */
+  TString **p = G(L)->strcache[i];
+  if (strcmp(str, getstr(p[0])) == 0)  /* hit? */
+    return p[0];  /* that it is */
+  else {  /* normal route */
+    TString *s = luaS_newlstr(L, str, strlen(str));
+    p[0] = s;
+    return s;
+  }
 }
 
 

lstring.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lstring.h,v 1.54 2014/03/19 18:51:42 roberto Exp roberto $
+** $Id: lstring.h,v 1.58 2015/03/04 13:31:21 roberto Exp roberto $
 ** String table (keep all strings handled by Lua)
 ** See Copyright Notice in lua.h
 */
@@ -13,7 +13,6 @@
 
 
 #define sizelstring(l)  (sizeof(union UTString) + ((l) + 1) * sizeof(char))
-#define sizestring(s)	sizelstring((s)->len)
 
 #define sizeludata(l)	(sizeof(union UUdata) + (l))
 #define sizeudata(u)	sizeludata((u)->len)
@@ -37,6 +36,8 @@
 LUAI_FUNC unsigned int luaS_hash (const char *str, size_t l, unsigned int seed);
 LUAI_FUNC int luaS_eqlngstr (TString *a, TString *b);
 LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
+LUAI_FUNC void luaS_clearcache (global_State *g);
+LUAI_FUNC void luaS_init (lua_State *L);
 LUAI_FUNC void luaS_remove (lua_State *L, TString *ts);
 LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s);
 LUAI_FUNC TString *luaS_newlstr (lua_State *L, const char *str, size_t l);

lstrlib.c

@@ -1,20 +1,23 @@
 /*
-** $Id: lstrlib.c,v 1.204 2014/10/17 16:28:21 roberto Exp roberto $
+** $Id: lstrlib.c,v 1.228 2015/04/03 18:41:57 roberto Exp roberto $
 ** Standard library for string operations and pattern-matching
 ** See Copyright Notice in lua.h
 */
 
+#define lstrlib_c
+#define LUA_LIB
+
+#include "lprefix.h"
+
 
 #include <ctype.h>
+#include <float.h>
 #include <limits.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define lstrlib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -30,10 +33,19 @@
 #endif
 
 
-/* macro to `unsign' a character */
+/* macro to 'unsign' a character */
 #define uchar(c)	((unsigned char)(c))
 
 
+/*
+** Some sizes are better limited to fit in 'int', but must also fit in
+** 'size_t'. (We assume that 'lua_Integer' cannot be smaller than 'int'.)
+*/
+#define MAXSIZE  \
+	(sizeof(size_t) < sizeof(int) ? (~(size_t)0) : (size_t)(INT_MAX))
+
+
+
 
 static int str_len (lua_State *L) {
   size_t l;
@@ -59,7 +71,7 @@ static int str_sub (lua_State *L) {
   if (start < 1) start = 1;
   if (end > (lua_Integer)l) end = l;
   if (start <= end)
-    lua_pushlstring(L, s + start - 1, (size_t)(end - start + 1));
+    lua_pushlstring(L, s + start - 1, (size_t)(end - start) + 1);
   else lua_pushliteral(L, "");
   return 1;
 }
@@ -103,13 +115,6 @@ static int str_upper (lua_State *L) {
 }
 
 
-/* reasonable limit to avoid arithmetic overflow and strings too big */
-#if LUA_MAXINTEGER / 2 <= 0x10000000
-#define MAXSIZE		((size_t)(LUA_MAXINTEGER / 2))
-#else
-#define MAXSIZE		((size_t)0x10000000)
-#endif
-
 static int str_rep (lua_State *L) {
   size_t l, lsep;
   const char *s = luaL_checklstring(L, 1, &l);
@@ -145,9 +150,9 @@ static int str_byte (lua_State *L) {
   if (posi < 1) posi = 1;
   if (pose > (lua_Integer)l) pose = l;
   if (posi > pose) return 0;  /* empty interval; return no values */
-  n = (int)(pose -  posi + 1);
+  if (pose - posi >= INT_MAX)  /* arithmetic overflow? */
-  if (posi + n <= pose)  /* arithmetic overflow? */
     return luaL_error(L, "string slice too long");
+  n = (int)(pose -  posi) + 1;
   luaL_checkstack(L, n, "string slice too long");
   for (i=0; i<n; i++)
     lua_pushinteger(L, uchar(s[posi+i-1]));
@@ -255,11 +260,11 @@ static const char *classend (MatchState *ms, const char *p) {
     }
     case '[': {
       if (*p == '^') p++;
-      do {  /* look for a `]' */
+      do {  /* look for a ']' */
         if (p == ms->p_end)
           luaL_error(ms->L, "malformed pattern (missing ']')");
         if (*(p++) == L_ESC && p < ms->p_end)
-          p++;  /* skip escapes (e.g. `%]') */
+          p++;  /* skip escapes (e.g. '%]') */
       } while (*p != ']');
       return p+1;
     }
@@ -294,7 +299,7 @@ static int matchbracketclass (int c, const char *p, const char *ec) {
   int sig = 1;
   if (*(p+1) == '^') {
     sig = 0;
-    p++;  /* skip the `^' */
+    p++;  /* skip the '^' */
   }
   while (++p < ec) {
     if (*p == L_ESC) {
@@ -431,7 +436,7 @@ static const char *match (MatchState *ms, const char *s, const char *p) {
         break;
       }
       case '$': {
-        if ((p + 1) != ms->p_end)  /* is the `$' the last char in pattern? */
+        if ((p + 1) != ms->p_end)  /* is the '$' the last char in pattern? */
           goto dflt;  /* no; go to default */
         s = (s == ms->src_end) ? s : NULL;  /* check end of string */
         break;
@@ -495,7 +500,7 @@ static const char *match (MatchState *ms, const char *s, const char *p) {
             }
             case '+':  /* 1 or more repetitions */
               s++;  /* 1 match already done */
-              /* go through */
+              /* FALLTHROUGH */
             case '*':  /* 0 or more repetitions */
               s = max_expand(ms, s, p, ep);
               break;
@@ -519,16 +524,16 @@ static const char *match (MatchState *ms, const char *s, const char *p) {
 static const char *lmemfind (const char *s1, size_t l1,
                                const char *s2, size_t l2) {
   if (l2 == 0) return s1;  /* empty strings are everywhere */
-  else if (l2 > l1) return NULL;  /* avoids a negative `l1' */
+  else if (l2 > l1) return NULL;  /* avoids a negative 'l1' */
   else {
-    const char *init;  /* to search for a `*s2' inside `s1' */
+    const char *init;  /* to search for a '*s2' inside 's1' */
-    l2--;  /* 1st char will be checked by `memchr' */
+    l2--;  /* 1st char will be checked by 'memchr' */
-    l1 = l1-l2;  /* `s2' cannot be found after that */
+    l1 = l1-l2;  /* 's2' cannot be found after that */
     while (l1 > 0 && (init = (const char *)memchr(s1, *s2, l1)) != NULL) {
       init++;   /* 1st char is already checked */
       if (memcmp(init, s2+1, l2) == 0)
         return init-1;
-      else {  /* correct `l1' and `s1' to try again */
+      else {  /* correct 'l1' and 's1' to try again */
         l1 -= init-s1;
         s1 = init;
       }
@@ -544,13 +549,13 @@ static void push_onecapture (MatchState *ms, int i, const char *s,
     if (i == 0)  /* ms->level == 0, too */
       lua_pushlstring(ms->L, s, e - s);  /* add whole match */
     else
-      luaL_error(ms->L, "invalid capture index");
+      luaL_error(ms->L, "invalid capture index %%%d", i + 1);
   }
   else {
     ptrdiff_t l = ms->capture[i].len;
     if (l == CAP_UNFINISHED) luaL_error(ms->L, "unfinished capture");
     if (l == CAP_POSITION)
-      lua_pushinteger(ms->L, ms->capture[i].init - ms->src_init + 1);
+      lua_pushinteger(ms->L, (ms->capture[i].init - ms->src_init) + 1);
     else
       lua_pushlstring(ms->L, ms->capture[i].init, l);
   }
@@ -594,8 +599,8 @@ static int str_find_aux (lua_State *L, int find) {
     /* do a plain search */
     const char *s2 = lmemfind(s + init - 1, ls - (size_t)init + 1, p, lp);
     if (s2) {
-      lua_pushinteger(L, s2 - s + 1);
+      lua_pushinteger(L, (s2 - s) + 1);
-      lua_pushinteger(L, s2 - s + lp);
+      lua_pushinteger(L, (s2 - s) + lp);
       return 2;
     }
   }
@@ -617,7 +622,7 @@ static int str_find_aux (lua_State *L, int find) {
       lua_assert(ms.matchdepth == MAXCCALLS);
       if ((res=match(&ms, s1, p)) != NULL) {
         if (find) {
-          lua_pushinteger(L, s1 - s + 1);  /* start */
+          lua_pushinteger(L, (s1 - s) + 1);  /* start */
           lua_pushinteger(L, res - s);   /* end */
           return push_captures(&ms, NULL, 0) + 2;
         }
@@ -793,17 +798,100 @@ static int str_gsub (lua_State *L) {
 ** =======================================================
 */
 
-/* maximum size of each formatted item (> len(format('%99.99f', -1e308))) */
+#if !defined(lua_number2strx)	/* { */
-#define MAX_ITEM	512
+
+/*
+** Hexadecimal floating-point formatter
+*/
+
+#include <locale.h>
+#include <math.h>
+
+#define SIZELENMOD	(sizeof(LUA_NUMBER_FRMLEN)/sizeof(char))
+
+
+/*
+** Number of bits that goes into the first digit. It can be any value
+** between 1 and 4; the following definition tries to align the number
+** to nibble boundaries by making what is left after that first digit a
+** multiple of 4.
+*/
+#define L_NBFD		((l_mathlim(MANT_DIG) - 1)%4 + 1)
+
+
+/*
+** Add integer part of 'x' to buffer and return new 'x'
+*/
+static lua_Number adddigit (char *buff, int n, lua_Number x) {
+  lua_Number dd = l_mathop(floor)(x);  /* get integer part from 'x' */
+  int d = (int)dd;
+  buff[n] = (d < 10 ? d + '0' : d - 10 + 'a');  /* add to buffer */
+  return x - dd;  /* return what is left */
+}
+
+
+static int num2straux (char *buff, lua_Number x) {
+  if (x != x || x == HUGE_VAL || x == -HUGE_VAL)  /* inf or NaN? */
+    return sprintf(buff, LUA_NUMBER_FMT, x);  /* equal to '%g' */
+  else if (x == 0) {  /* can be -0... */
+    sprintf(buff, LUA_NUMBER_FMT, x);
+    strcat(buff, "x0p+0");  /* reuses '0/-0' from 'sprintf'... */
+    return strlen(buff);
+  }
+  else {
+    int e;
+    lua_Number m = l_mathop(frexp)(x, &e);  /* 'x' fraction and exponent */
+    int n = 0;  /* character count */
+    if (m < 0) {  /* is number negative? */
+      buff[n++] = '-';  /* add signal */
+      m = -m;  /* make it positive */
+    }
+    buff[n++] = '0'; buff[n++] = 'x';  /* add "0x" */
+    m = adddigit(buff, n++, m * (1 << L_NBFD));  /* add first digit */
+    e -= L_NBFD;  /* this digit goes before the radix point */
+    if (m > 0) {  /* more digits? */
+      buff[n++] = lua_getlocaledecpoint();  /* add radix point */
+      do {  /* add as many digits as needed */
+        m = adddigit(buff, n++, m * 16);
+      } while (m > 0);
+    }
+    n += sprintf(buff + n, "p%+d", e);  /* add exponent */
+    return n;
+  }
+}
+
+
+static int lua_number2strx (lua_State *L, char *buff, const char *fmt,
+                            lua_Number x) {
+  int n = num2straux(buff, x);
+  if (fmt[SIZELENMOD] == 'A') {
+    int i;
+    for (i = 0; i < n; i++)
+      buff[i] = toupper(uchar(buff[i]));
+  }
+  else if (fmt[SIZELENMOD] != 'a')
+    luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented");
+  return n;
+}
+
+#endif				/* } */
+
+
+/*
+** Maximum size of each formatted item. This maximum size is produced
+** by format('%.99f', minfloat), and is equal to 99 + 2 ('-' and '.') +
+** number of decimal digits to represent minfloat.
+*/
+#define MAX_ITEM	(120 + l_mathlim(MAX_10_EXP))
+
 
 /* valid flags in a format specification */
 #define FLAGS	"-+ #0"
 
 /*
 ** maximum size of each format specification (such as "%-099.99d")
-** (+2 for length modifiers; +10 accounts for %99.99x plus margin of error)
 */
-#define MAX_FORMAT	(sizeof(FLAGS) + 2 + 10)
+#define MAX_FORMAT	32
 
 
 static void addquoted (lua_State *L, luaL_Buffer *b, int arg) {
@@ -845,8 +933,8 @@ static const char *scanformat (lua_State *L, const char *strfrmt, char *form) {
   if (isdigit(uchar(*p)))
     luaL_error(L, "invalid format (width or precision too long)");
   *(form++) = '%';
-  memcpy(form, strfrmt, (p - strfrmt + 1) * sizeof(char));
+  memcpy(form, strfrmt, ((p - strfrmt) + 1) * sizeof(char));
-  form += p - strfrmt + 1;
+  form += (p - strfrmt) + 1;
   *form = '\0';
   return p;
 }
@@ -879,7 +967,7 @@ static int str_format (lua_State *L) {
     else if (*++strfrmt == L_ESC)
       luaL_addchar(&b, *strfrmt++);  /* %% */
     else { /* format item */
-      char form[MAX_FORMAT];  /* to store the format (`%...') */
+      char form[MAX_FORMAT];  /* to store the format ('%...') */
       char *buff = luaL_prepbuffsize(&b, MAX_ITEM);  /* to put formatted item */
       int nb = 0;  /* number of bytes in added item */
       if (++arg > top)
@@ -897,10 +985,11 @@ static int str_format (lua_State *L) {
           nb = sprintf(buff, form, n);
           break;
         }
-        case 'e': case 'E': case 'f':
-#if defined(LUA_USE_AFORMAT)
         case 'a': case 'A':
-#endif
+          addlenmod(form, LUA_NUMBER_FRMLEN);
+          nb = lua_number2strx(L, buff, form, luaL_checknumber(L, arg));
+          break;
+        case 'e': case 'E': case 'f':
         case 'g': case 'G': {
           addlenmod(form, LUA_NUMBER_FRMLEN);
           nb = sprintf(buff, form, luaL_checknumber(L, arg));
@@ -917,15 +1006,14 @@ static int str_format (lua_State *L) {
             /* no precision and string is too long to be formatted;
                keep original string */
             luaL_addvalue(&b);
-            break;
           }
           else {
             nb = sprintf(buff, form, s);
             lua_pop(L, 1);  /* remove result from 'luaL_tolstring' */
-            break;
           }
+          break;
         }
-        default: {  /* also treat cases `pnLlh' */
+        default: {  /* also treat cases 'pnLlh' */
           return luaL_error(L, "invalid option '%%%c' to 'format'",
                                *(strfrmt - 1));
         }
@@ -947,6 +1035,11 @@ static int str_format (lua_State *L) {
 */
 
 
+/* value used for padding */
+#if !defined(LUA_PACKPADBYTE)
+#define LUA_PACKPADBYTE		0x00
+#endif
+
 /* maximum size for the binary representation of an integer */
 #define MAXINTSIZE	16
 
@@ -959,9 +1052,6 @@ static int str_format (lua_State *L) {
 /* size of a lua_Integer */
 #define SZINT	((int)sizeof(lua_Integer))
 
-/* mask for all ones in last byte in a lua Integer */
-#define HIGHERBYTE	((lua_Unsigned)MC << (NB * (SZINT - 1)))
-
 
 /* dummy union to get native endianness */
 static const union {
@@ -1012,8 +1102,7 @@ typedef enum KOption {
   Kzstr,	/* zero-terminated strings */
   Kpadding,	/* padding */
   Kpaddalign,	/* padding for alignment */
-  Knop,		/* no-op (configuration or spaces) */
+  Knop		/* no-op (configuration or spaces) */
-  Keof		/* end of format */
 } KOption;
 
 
@@ -1029,8 +1118,8 @@ static int getnum (const char **fmt, int df) {
   else {
     int a = 0;
     do {
-      a = a*10 + *((*fmt)++) - '0';
+      a = a*10 + (*((*fmt)++) - '0');
-    } while (digit(**fmt) && a < (INT_MAX/10 - 10));
+    } while (digit(**fmt) && a <= ((int)MAXSIZE - 9)/10);
     return a;
   }
 }
@@ -1043,7 +1132,8 @@ static int getnum (const char **fmt, int df) {
 static int getnumlimit (Header *h, const char **fmt, int df) {
   int sz = getnum(fmt, df);
   if (sz > MAXINTSIZE || sz <= 0)
-    luaL_error(h->L, "integral size (%d) out of limits [1,%d]", sz, MAXINTSIZE);
+    luaL_error(h->L, "integral size (%d) out of limits [1,%d]",
+                     sz, MAXINTSIZE);
   return sz;
 }
 
@@ -1080,20 +1170,22 @@ static KOption getoption (Header *h, const char **fmt, int *size) {
     case 'i': *size = getnumlimit(h, fmt, sizeof(int)); return Kint;
     case 'I': *size = getnumlimit(h, fmt, sizeof(int)); return Kuint;
     case 's': *size = getnumlimit(h, fmt, sizeof(size_t)); return Kstring;
-    case 'c': *size = getnum(fmt, 1); return Kchar;
+    case 'c':
+      *size = getnum(fmt, -1);
+      if (*size == -1)
+        luaL_error(h->L, "missing size for format option 'c'");
+      return Kchar;
     case 'z': return Kzstr;
     case 'x': *size = 1; return Kpadding;
     case 'X': return Kpaddalign;
-    case ' ': return Knop;
+    case ' ': break;
-    case '\0': return Keof;
+    case '<': h->islittle = 1; break;
-    case '<': h->islittle = 1; return Knop;
+    case '>': h->islittle = 0; break;
-    case '>': h->islittle = 0; return Knop;
+    case '=': h->islittle = nativeendian.little; break;
-    case '!': h->maxalign = getnumlimit(h, fmt, MAXALIGN); return Knop;
+    case '!': h->maxalign = getnumlimit(h, fmt, MAXALIGN); break;
-    default: {
+    default: luaL_error(h->L, "invalid format option '%c'", opt);
-      luaL_error(h->L, "invalid format option '%c'", opt);
-      return Knop;
-    }
   }
+  return Knop;
 }
 
 
@@ -1103,19 +1195,15 @@ static KOption getoption (Header *h, const char **fmt, int *size) {
 ** alignment requirements.
 ** Local variable 'size' gets the size to be aligned. (Kpadal option
 ** always gets its full alignment, other options are limited by 
-** the maximum alignment ('maxalign). Kchar option needs no aligment
+** the maximum alignment ('maxalign'). Kchar option needs no alignment
 ** despite its size.
 */
 static KOption getdetails (Header *h, size_t totalsize,
                            const char **fmt, int *psize, int *ntoalign) {
-  int align;
+  KOption opt = getoption(h, fmt, psize);
-  KOption opt;
+  int align = *psize;  /* usually, alignment follows size */
-  do {
-    opt = getoption(h, fmt, psize);
-  } while (opt == Knop);  /* skip no-op options */
-  align = *psize;  /* usually, alignment follows size */
   if (opt == Kpaddalign) {  /* 'X' gets alignment from following option */
-    if (getoption(h, fmt, &align) == Kchar || align == 0)
+    if (**fmt == '\0' || getoption(h, fmt, &align) == Kchar || align == 0)
       luaL_argerror(h->L, 1, "invalid next option for option 'X'");
   }
   if (align <= 1 || opt == Kchar)  /* need no alignment? */
@@ -1131,15 +1219,25 @@ static KOption getdetails (Header *h, size_t totalsize,
 }
 
 
+/*
+** Pack integer 'n' with 'size' bytes and 'islittle' endianness.
+** The final 'if' handles the case when 'size' is larger than
+** the size of a Lua integer, correcting the extra sign-extension
+** bytes if necessary (by default they would be zeros).
+*/
 static void packint (luaL_Buffer *b, lua_Unsigned n,
-                     int islittle, int size, lua_Unsigned mask) {
+                     int islittle, int size, int neg) {
   char *buff = luaL_prepbuffsize(b, size);
   int i;
-  for (i = 0; i < size - 1; i++) {
+  buff[islittle ? 0 : size - 1] = (char)(n & MC);  /* first byte */
-    buff[islittle ? i : size - 1 - i] = (n & MC);
+  for (i = 1; i < size; i++) {
-    n = (n >> NB) | mask;
+    n >>= NB;
+    buff[islittle ? i : size - 1 - i] = (char)(n & MC);
+  }
+  if (neg && size > SZINT) {  /* negative number need sign extension? */
+    for (i = SZINT; i < size; i++)  /* correct extra bytes */
+      buff[islittle ? i : size - 1 - i] = (char)MC;
   }
-  buff[islittle ? i : size - 1 - i] = (n & MC);
   luaL_addsize(b, size);  /* add result to buffer */
 }
 
@@ -1171,21 +1269,21 @@ static int str_pack (lua_State *L) {
   initheader(L, &h);
   lua_pushnil(L);  /* mark to separate arguments from string buffer */
   luaL_buffinit(L, &b);
-  for (;;) {
+  while (*fmt != '\0') {
     int size, ntoalign;
     KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign);
     totalsize += ntoalign + size;
-    while (ntoalign-- > 0) luaL_addchar(&b, '\0');  /* fill alignment */
+    while (ntoalign-- > 0)
+     luaL_addchar(&b, LUA_PACKPADBYTE);  /* fill alignment */
     arg++;
     switch (opt) {
       case Kint: {  /* signed integers */
         lua_Integer n = luaL_checkinteger(L, arg);
-        lua_Unsigned mask = (n < 0) ? HIGHERBYTE : 0;  /*  sign extension */
         if (size < SZINT) {  /* need overflow check? */
           lua_Integer lim = (lua_Integer)1 << ((size * NB) - 1);
           luaL_argcheck(L, -lim <= n && n < lim, arg, "integer overflow");
         }
-        packint(&b, (lua_Unsigned)n, h.islittle, size, mask);
+        packint(&b, (lua_Unsigned)n, h.islittle, size, (n < 0));
         break;
       }
       case Kuint: {  /* unsigned integers */
@@ -1235,18 +1333,50 @@ static int str_pack (lua_State *L) {
         totalsize += len + 1;
         break;
       }
-      case Kpadding: luaL_addchar(&b, '\0');  /* go through */
+      case Kpadding: luaL_addchar(&b, LUA_PACKPADBYTE);  /* FALLTHROUGH */
       case Kpaddalign: case Knop:
         arg--;  /* undo increment */
         break;
-      case Keof:  /* end of format */
-        luaL_pushresult(&b);
-        return 1;
     }
   }
+  luaL_pushresult(&b);
+  return 1;
 }
 
 
+static int str_packsize (lua_State *L) {
+  Header h;
+  const char *fmt = luaL_checkstring(L, 1);  /* format string */
+  size_t totalsize = 0;  /* accumulate total size of result */
+  initheader(L, &h);
+  while (*fmt != '\0') {
+    int size, ntoalign;
+    KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign);
+    size += ntoalign;  /* total space used by option */
+    luaL_argcheck(L, totalsize <= MAXSIZE - size, 1,
+                     "format result too large");
+    totalsize += size;
+    switch (opt) {
+      case Kstring:  /* strings with length count */
+      case Kzstr:    /* zero-terminated string */
+        luaL_argerror(L, 1, "variable-length format");
+        break;
+      default:  break;
+    }
+  }
+  lua_pushinteger(L, (lua_Integer)totalsize);
+  return 1;
+}
+
+
+/*
+** Unpack an integer with 'size' bytes and 'islittle' endianness.
+** If size is smaller than the size of a Lua integer and integer
+** is signed, must do sign extension (propagating the sign to the
+** higher bits); if size is larger than the size of a Lua integer,
+** it must check the unread bytes to see whether they do not cause an
+** overflow.
+*/
 static lua_Integer unpackint (lua_State *L, const char *str,
                               int islittle, int size, int issigned) {
   lua_Unsigned res = 0;
@@ -1262,11 +1392,11 @@ static lua_Integer unpackint (lua_State *L, const char *str,
       res = ((res ^ mask) - mask);  /* do sign extension */
     }
   }
-  else {  /* must check unread bytes */
+  else if (size > SZINT) {  /* must check unread bytes */
     int mask = (!issigned || (lua_Integer)res >= 0) ? 0 : MC;
     for (i = limit; i < size; i++) {
       if ((unsigned char)str[islittle ? i : size - 1 - i] != mask)
-        luaL_error(L, "%d-bit integer does not fit into Lua Integer", size);
+        luaL_error(L, "%d-byte integer does not fit into Lua Integer", size);
     }
   }
   return (lua_Integer)res;
@@ -1282,12 +1412,12 @@ static int str_unpack (lua_State *L) {
   int n = 0;  /* number of results */
   luaL_argcheck(L, pos <= ld, 3, "initial position out of string");
   initheader(L, &h);
-  for (;;) {
+  while (*fmt != '\0') {
     int size, ntoalign;
     KOption opt = getdetails(&h, pos, &fmt, &size, &ntoalign);
     if ((size_t)ntoalign + size > ~pos || pos + ntoalign + size > ld)
       luaL_argerror(L, 2, "data string too short");
-    pos += ntoalign;
+    pos += ntoalign;  /* skip alignment */
     /* stack space for item + next position */
     luaL_checkstack(L, 2, "too many results");
     n++;
@@ -1317,24 +1447,23 @@ static int str_unpack (lua_State *L) {
         size_t len = (size_t)unpackint(L, data + pos, h.islittle, size, 0);
         luaL_argcheck(L, pos + len + size <= ld, 2, "data string too short");
         lua_pushlstring(L, data + pos + size, len);
-        pos += len;
+        pos += len;  /* skip string */
         break;
       }
       case Kzstr: {
         size_t len = (int)strlen(data + pos);
         lua_pushlstring(L, data + pos, len);
-        pos += len + 1;  /* skip final '\0' */
+        pos += len + 1;  /* skip string plus final '\0' */
         break;
       }
       case Kpaddalign: case Kpadding: case Knop:
         n--;  /* undo increment */
         break;
-      case Keof:  /* end of format */
-        lua_pushinteger(L, pos + 1);  /* next position */
-        return n;
     }
     pos += size;
   }
+  lua_pushinteger(L, pos + 1);  /* next position */
+  return n + 1;
 }
 
 /* }====================================================== */
@@ -1356,6 +1485,7 @@ static const luaL_Reg strlib[] = {
   {"sub", str_sub},
   {"upper", str_upper},
   {"pack", str_pack},
+  {"packsize", str_packsize},
   {"unpack", str_unpack},
   {NULL, NULL}
 };

ltable.c

@@ -1,31 +1,31 @@
 /*
-** $Id: ltable.c,v 2.95 2014/09/04 18:15:29 roberto Exp roberto $
+** $Id: ltable.c,v 2.110 2015/05/20 16:22:30 roberto Exp roberto $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
 
+#define ltable_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
 
 /*
 ** Implementation of tables (aka arrays, objects, or hash tables).
 ** Tables keep its elements in two parts: an array part and a hash part.
 ** Non-negative integer keys are all candidates to be kept in the array
-** part. The actual size of the array is the largest `n' such that at
+** part. The actual size of the array is the largest 'n' such that
-** least half the slots between 0 and n are in use.
+** more than half the slots between 1 and n are in use.
 ** Hash uses a mix of chained scatter table with Brent's variation.
 ** A main invariant of these tables is that, if an element is not
-** in its main position (i.e. the `original' position that its hash gives
+** in its main position (i.e. the 'original' position that its hash gives
 ** to it), then the colliding element is in its own main position.
 ** Hence even when the load factor reaches 100%, performance remains good.
 */
 
-#include <float.h>
 #include <math.h>
-#include <string.h>
 #include <limits.h>
 
-#define ltable_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "ldebug.h"
@@ -69,7 +69,7 @@
 #define hashmod(t,n)	(gnode(t, ((n) % ((sizenode(t)-1)|1))))
 
 
-#define hashpointer(t,p)	hashmod(t, point2int(p))
+#define hashpointer(t,p)	hashmod(t, point2uint(p))
 
 
 #define dummynode		(&dummynode_)
@@ -83,35 +83,37 @@ static const Node dummynode_ = {
 
 
 /*
-** Checks whether a float has a value representable as a lua_Integer
+** Hash for floating-point numbers.
-** (and does the conversion if so)
+** The main computation should be just
+**     n = frepx(n, &i); return (n * INT_MAX) + i
+** but there are some numerical subtleties.
+** In a two-complement representation, INT_MAX does not has an exact
+** representation as a float, but INT_MIN does; because the absolute
+** value of 'frexp' is smaller than 1 (unless 'n' is inf/NaN), the
+** absolute value of the product 'frexp * -INT_MIN' is smaller or equal
+** to INT_MAX. Next, the use of 'unsigned int' avoids overflows when
+** adding 'i'; the use of '~u' (instead of '-u') avoids problems with
+** INT_MIN.
 */
-static int numisinteger (lua_Number x, lua_Integer *p) {
+#if !defined(l_hashfloat)
-  if ((x) == l_floor(x))  /* integral value? */
+static int l_hashfloat (lua_Number n) {
-    return lua_numtointeger(x, p);  /* try as an integer */
-  else return 0;
-}
-
-
-/*
-** hash for floating-point numbers
-*/
-static Node *hashfloat (const Table *t, lua_Number n) {
   int i;
-  n = l_mathop(frexp)(n, &i) * cast_num(INT_MAX - DBL_MAX_EXP);
+  lua_Integer ni;
-  i += cast_int(n);
+  n = l_mathop(frexp)(n, &i) * -cast_num(INT_MIN);
-  if (i < 0) {
+  if (!lua_numbertointeger(n, &ni)) {  /* is 'n' inf/-inf/NaN? */
-    if (cast(unsigned int, i) == 0u - i)  /* use unsigned to avoid overflows */
+    lua_assert(luai_numisnan(n) || l_mathop(fabs)(n) == HUGE_VAL);
-      i = 0;  /* handle INT_MIN */
+    return 0;
-    i = -i;  /* must be a positive value */
+  }
+  else {  /* normal case */
+    unsigned int u = cast(unsigned int, i) + cast(unsigned int, ni);
+    return cast_int(u <= cast(unsigned int, INT_MAX) ? u : ~u);
   }
-  return hashmod(t, i);
 }
-
+#endif
 
 
 /*
-** returns the `main' position of an element in a table (that is, the index
+** returns the 'main' position of an element in a table (that is, the index
 ** of its hash value)
 */
 static Node *mainposition (const Table *t, const TValue *key) {
@@ -119,13 +121,13 @@ static Node *mainposition (const Table *t, const TValue *key) {
     case LUA_TNUMINT:
       return hashint(t, ivalue(key));
     case LUA_TNUMFLT:
-      return hashfloat(t, fltvalue(key));
+      return hashmod(t, l_hashfloat(fltvalue(key)));
     case LUA_TSHRSTR:
       return hashstr(t, tsvalue(key));
     case LUA_TLNGSTR: {
       TString *s = tsvalue(key);
       if (s->extra == 0) {  /* no hash? */
-        s->hash = luaS_hash(getstr(s), s->len, s->hash);
+        s->hash = luaS_hash(getstr(s), s->u.lnglen, s->hash);
         s->extra = 1;  /* now it has its hash */
       }
       return hashstr(t, tsvalue(key));
@@ -143,7 +145,7 @@ static Node *mainposition (const Table *t, const TValue *key) {
 
 
 /*
-** returns the index for `key' if `key' is an appropriate key to live in
+** returns the index for 'key' if 'key' is an appropriate key to live in
 ** the array part of the table, 0 otherwise.
 */
 static unsigned int arrayindex (const TValue *key) {
@@ -152,12 +154,12 @@ static unsigned int arrayindex (const TValue *key) {
     if (0 < k && (lua_Unsigned)k <= MAXASIZE)
       return cast(unsigned int, k);  /* 'key' is an appropriate array index */
   }
-  return 0;  /* `key' did not match some condition */
+  return 0;  /* 'key' did not match some condition */
 }
 
 
 /*
-** returns the index of a `key' for table traversals. First goes all
+** returns the index of a 'key' for table traversals. First goes all
 ** elements in the array part, then elements in the hash part. The
 ** beginning of a traversal is signaled by 0.
 */
@@ -165,13 +167,13 @@ static unsigned int findindex (lua_State *L, Table *t, StkId key) {
   unsigned int i;
   if (ttisnil(key)) return 0;  /* first iteration */
   i = arrayindex(key);
-  if (i != 0 && i <= t->sizearray)  /* is `key' inside array part? */
+  if (i != 0 && i <= t->sizearray)  /* is 'key' inside array part? */
     return i;  /* yes; that's the index */
   else {
     int nx;
     Node *n = mainposition(t, key);
-    for (;;) {  /* check whether `key' is somewhere in the chain */
+    for (;;) {  /* check whether 'key' is somewhere in the chain */
-      /* key may be dead already, but it is ok to use it in `next' */
+      /* key may be dead already, but it is ok to use it in 'next' */
       if (luaV_rawequalobj(gkey(n), key) ||
             (ttisdeadkey(gkey(n)) && iscollectable(key) &&
              deadvalue(gkey(n)) == gcvalue(key))) {
@@ -217,34 +219,35 @@ int luaH_next (lua_State *L, Table *t, StkId key) {
 /*
 ** Compute the optimal size for the array part of table 't'. 'nums' is a
 ** "count array" where 'nums[i]' is the number of integers in the table
-** between 2^(i - 1) + 1 and 2^i. Put in '*narray' the optimal size, and
+** between 2^(i - 1) + 1 and 2^i. 'pna' enters with the total number of
-** return the number of elements that will go to that part.
+** integer keys in the table and leaves with the number of keys that
+** will go to the array part; return the optimal size.
 */
-static unsigned int computesizes (unsigned int nums[], unsigned int *narray) {
+static unsigned int computesizes (unsigned int nums[], unsigned int *pna) {
   int i;
-  unsigned int twotoi;  /* 2^i */
+  unsigned int twotoi;  /* 2^i (candidate for optimal size) */
   unsigned int a = 0;  /* number of elements smaller than 2^i */
   unsigned int na = 0;  /* number of elements to go to array part */
-  unsigned int n = 0;  /* optimal size for array part */
+  unsigned int optimal = 0;  /* optimal size for array part */
-  for (i = 0, twotoi = 1; twotoi/2 < *narray; i++, twotoi *= 2) {
+  /* loop while keys can fill more than half of total size */
+  for (i = 0, twotoi = 1; *pna > twotoi / 2; i++, twotoi *= 2) {
     if (nums[i] > 0) {
       a += nums[i];
       if (a > twotoi/2) {  /* more than half elements present? */
-        n = twotoi;  /* optimal size (till now) */
+        optimal = twotoi;  /* optimal size (till now) */
-        na = a;  /* all elements up to 'n' will go to array part */
+        na = a;  /* all elements up to 'optimal' will go to array part */
       }
     }
-    if (a == *narray) break;  /* all elements already counted */
   }
-  *narray = n;
+  lua_assert((optimal == 0 || optimal / 2 < na) && na <= optimal);
-  lua_assert(*narray/2 <= na && na <= *narray);
+  *pna = na;
-  return na;
+  return optimal;
 }
 
 
 static int countint (const TValue *key, unsigned int *nums) {
   unsigned int k = arrayindex(key);
-  if (k != 0) {  /* is `key' an appropriate array index? */
+  if (k != 0) {  /* is 'key' an appropriate array index? */
     nums[luaO_ceillog2(k)]++;  /* count as such */
     return 1;
   }
@@ -253,10 +256,15 @@ static int countint (const TValue *key, unsigned int *nums) {
 }
 
 
+/*
+** Count keys in array part of table 't': Fill 'nums[i]' with
+** number of keys that will go into corresponding slice and return
+** total number of non-nil keys.
+*/
 static unsigned int numusearray (const Table *t, unsigned int *nums) {
   int lg;
   unsigned int ttlg;  /* 2^lg */
-  unsigned int ause = 0;  /* summation of `nums' */
+  unsigned int ause = 0;  /* summation of 'nums' */
   unsigned int i = 1;  /* count to traverse all array keys */
   /* traverse each slice */
   for (lg = 0, ttlg = 1; lg <= MAXABITS; lg++, ttlg *= 2) {
@@ -279,8 +287,7 @@ static unsigned int numusearray (const Table *t, unsigned int *nums) {
 }
 
 
-static int numusehash (const Table *t, unsigned int *nums,
+static int numusehash (const Table *t, unsigned int *nums, unsigned int *pna) {
-                       unsigned int *pnasize) {
   int totaluse = 0;  /* total number of elements */
   int ause = 0;  /* elements added to 'nums' (can go to array part) */
   int i = sizenode(t);
@@ -291,7 +298,7 @@ static int numusehash (const Table *t, unsigned int *nums,
       totaluse++;
     }
   }
-  *pnasize += ause;
+  *pna += ause;
   return totaluse;
 }
 
@@ -308,7 +315,7 @@ static void setarrayvector (lua_State *L, Table *t, unsigned int size) {
 static void setnodevector (lua_State *L, Table *t, unsigned int size) {
   int lsize;
   if (size == 0) {  /* no elements to hash part? */
-    t->node = cast(Node *, dummynode);  /* use common `dummynode' */
+    t->node = cast(Node *, dummynode);  /* use common 'dummynode' */
     lsize = 0;
   }
   else {
@@ -361,7 +368,7 @@ void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
     }
   }
   if (!isdummy(nold))
-    luaM_freearray(L, nold, cast(size_t, twoto(oldhsize))); /* free old array */
+    luaM_freearray(L, nold, cast(size_t, twoto(oldhsize))); /* free old hash */
 }
 
 
@@ -374,21 +381,22 @@ void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize) {
 ** nums[i] = number of keys 'k' where 2^(i - 1) < k <= 2^i
 */
 static void rehash (lua_State *L, Table *t, const TValue *ek) {
-  unsigned int nasize, na;
+  unsigned int asize;  /* optimal size for array part */
+  unsigned int na;  /* number of keys in the array part */
   unsigned int nums[MAXABITS + 1];
   int i;
   int totaluse;
   for (i = 0; i <= MAXABITS; i++) nums[i] = 0;  /* reset counts */
-  nasize = numusearray(t, nums);  /* count keys in array part */
+  na = numusearray(t, nums);  /* count keys in array part */
-  totaluse = nasize;  /* all those keys are integer keys */
+  totaluse = na;  /* all those keys are integer keys */
-  totaluse += numusehash(t, nums, &nasize);  /* count keys in hash part */
+  totaluse += numusehash(t, nums, &na);  /* count keys in hash part */
   /* count extra key */
-  nasize += countint(ek, nums);
+  na += countint(ek, nums);
   totaluse++;
   /* compute new size for array part */
-  na = computesizes(nums, &nasize);
+  asize = computesizes(nums, &na);
   /* resize the table to new computed sizes */
-  luaH_resize(L, t, nasize, totaluse - na);
+  luaH_resize(L, t, asize, totaluse - na);
 }
 
 
@@ -441,14 +449,13 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
   TValue aux;
   if (ttisnil(key)) luaG_runerror(L, "table index is nil");
   else if (ttisfloat(key)) {
-    lua_Number n = fltvalue(key);
     lua_Integer k;
-    if (luai_numisnan(n))
+    if (luaV_tointeger(key, &k, 0)) {  /* index is int? */
-      luaG_runerror(L, "table index is NaN");
-    if (numisinteger(n, &k)) {  /* index is int? */
       setivalue(&aux, k);
       key = &aux;  /* insert it as an integer */
     }
+    else if (luai_numisnan(fltvalue(key)))
+      luaG_runerror(L, "table index is NaN");
   }
   mp = mainposition(t, key);
   if (!ttisnil(gval(mp)) || isdummy(mp)) {  /* main position is taken? */
@@ -482,7 +489,7 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
       mp = f;
     }
   }
-  setkey(L, &mp->i_key, key);
+  setnodekey(L, &mp->i_key, key);
   luaC_barrierback(L, t, key);
   lua_assert(ttisnil(gval(mp)));
   return gval(mp);
@@ -498,7 +505,7 @@ const TValue *luaH_getint (Table *t, lua_Integer key) {
     return &t->array[key - 1];
   else {
     Node *n = hashint(t, key);
-    for (;;) {  /* check whether `key' is somewhere in the chain */
+    for (;;) {  /* check whether 'key' is somewhere in the chain */
       if (ttisinteger(gkey(n)) && ivalue(gkey(n)) == key)
         return gval(n);  /* that's it */
       else {
@@ -518,7 +525,7 @@ const TValue *luaH_getint (Table *t, lua_Integer key) {
 const TValue *luaH_getstr (Table *t, TString *key) {
   Node *n = hashstr(t, key);
   lua_assert(key->tt == LUA_TSHRSTR);
-  for (;;) {  /* check whether `key' is somewhere in the chain */
+  for (;;) {  /* check whether 'key' is somewhere in the chain */
     const TValue *k = gkey(n);
     if (ttisshrstring(k) && eqshrstr(tsvalue(k), key))
       return gval(n);  /* that's it */
@@ -542,13 +549,13 @@ const TValue *luaH_get (Table *t, const TValue *key) {
     case LUA_TNIL: return luaO_nilobject;
     case LUA_TNUMFLT: {
       lua_Integer k;
-      if (numisinteger(fltvalue(key), &k)) /* index is int? */
+      if (luaV_tointeger(key, &k, 0)) /* index is int? */
         return luaH_getint(t, k);  /* use specialized version */
-      /* else go through */
+      /* else... */
-    }
+    }  /* FALLTHROUGH */
     default: {
       Node *n = mainposition(t, key);
-      for (;;) {  /* check whether `key' is somewhere in the chain */
+      for (;;) {  /* check whether 'key' is somewhere in the chain */
         if (luaV_rawequalobj(gkey(n), key))
           return gval(n);  /* that's it */
         else {
@@ -592,7 +599,7 @@ void luaH_setint (lua_State *L, Table *t, lua_Integer key, TValue *value) {
 static int unbound_search (Table *t, unsigned int j) {
   unsigned int i = j;  /* i is zero or a present index */
   j++;
-  /* find `i' and `j' such that i is present and j is not */
+  /* find 'i' and 'j' such that i is present and j is not */
   while (!ttisnil(luaH_getint(t, j))) {
     i = j;
     if (j > cast(unsigned int, MAX_INT)/2) {  /* overflow? */
@@ -614,7 +621,7 @@ static int unbound_search (Table *t, unsigned int j) {
 
 
 /*
-** Try to find a boundary in table `t'. A `boundary' is an integer index
+** Try to find a boundary in table 't'. A 'boundary' is an integer index
 ** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil).
 */
 int luaH_getn (Table *t) {

ltablib.c

@@ -1,16 +1,18 @@
 /*
-** $Id: ltablib.c,v 1.76 2014/09/22 06:42:15 roberto Exp roberto $
+** $Id: ltablib.c,v 1.79 2014/11/02 19:19:04 roberto Exp roberto $
 ** Library for Table Manipulation
 ** See Copyright Notice in lua.h
 */
 
+#define ltablib_c
+#define LUA_LIB
+
+#include "lprefix.h"
+
 
 #include <limits.h>
 #include <stddef.h>
 
-#define ltablib_c
-#define LUA_LIB
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -122,8 +124,6 @@ static int tmove (lua_State *L) {
   lua_Integer e = luaL_checkinteger(L, 3);
   lua_Integer t = luaL_checkinteger(L, 4);
   int tt = !lua_isnoneornil(L, 5) ? 5 : 1;  /* destination table */
-  /* the following restriction avoids several problems with overflows */
-  luaL_argcheck(L, f > 0, 2, "initial position must be positive");
   if (e >= f) {  /* otherwise, nothing to move */
     lua_Integer n, i;
     ta.geti = (luaL_getmetafield(L, 1, "__index") == LUA_TNIL)
@@ -132,7 +132,11 @@ static int tmove (lua_State *L) {
     ta.seti = (luaL_getmetafield(L, tt, "__newindex") == LUA_TNIL)
       ? (luaL_checktype(L, tt, LUA_TTABLE), lua_rawseti)
       : lua_seti;
+    luaL_argcheck(L, f > 0 || e < LUA_MAXINTEGER + f, 3,
+                  "too many elements to move");
     n = e - f + 1;  /* number of elements to move */
+    luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4,
+                  "destination wrap around");
     if (t > f) {
       for (i = n - 1; i >= 0; i--) {
         (*ta.geti)(L, 1, f + i);
@@ -225,7 +229,7 @@ static int unpack (lua_State *L) {
 /*
 ** {======================================================
 ** Quicksort
-** (based on `Algorithms in MODULA-3', Robert Sedgewick;
+** (based on 'Algorithms in MODULA-3', Robert Sedgewick;
 **  Addison-Wesley, 1993.)
 ** =======================================================
 */
@@ -241,7 +245,7 @@ static int sort_comp (lua_State *L, int a, int b) {
     int res;
     lua_pushvalue(L, 2);
     lua_pushvalue(L, a-1);  /* -1 to compensate function */
-    lua_pushvalue(L, b-2);  /* -2 to compensate function and `a' */
+    lua_pushvalue(L, b-2);  /* -2 to compensate function and 'a' */
     lua_call(L, 2, 1);
     res = lua_toboolean(L, -1);
     lua_pop(L, 1);

ltests.c

@@ -1,18 +1,21 @@
 /*
-** $Id: ltests.c,v 2.187 2014/10/06 17:06:49 roberto Exp roberto $
+** $Id: ltests.c,v 2.204 2015/03/13 16:24:50 roberto Exp roberto $
 ** Internal Module for Debugging of the Lua Implementation
 ** See Copyright Notice in lua.h
 */
 
+#define ltests_c
+#define LUA_CORE
+
+#include "lprefix.h"
+
 
 #include <limits.h>
+#include <setjmp.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define ltests_c
-#define LUA_CORE
-
 #include "lua.h"
 
 #include "lapi.h"
@@ -46,6 +49,9 @@ int islocked = 0;
 #define obj_at(L,k)	(L->ci->func + (k))
 
 
+static int runC (lua_State *L, lua_State *L1, const char *pc);
+
+
 static void setnameval (lua_State *L, const char *name, int val) {
   lua_pushstring(L, name);
   lua_pushinteger(L, val);
@@ -152,7 +158,7 @@ void *debug_realloc (void *ud, void *b, size_t oldsize, size_t size) {
       memcpy(newblock + 1, block + 1, commonsize);  /* copy old contents */
       freeblock(mc, block);  /* erase (and check) old copy */
     }
-    /* initialize new part of the block with something `weird' */
+    /* initialize new part of the block with something weird */
     fillmem(cast(char *, newblock + 1) + commonsize, size - commonsize);
     /* initialize marks after block */
     for (i = 0; i < MARKSIZE; i++)
@@ -283,11 +289,11 @@ static void checkLclosure (global_State *g, LClosure *cl) {
 static int lua_checkpc (lua_State *L, CallInfo *ci) {
   if (!isLua(ci)) return 1;
   else {
-    Proto *p;
+    /* if function yielded (inside a hook), real 'func' is in 'extra' field */
-    if (L->status != LUA_YIELD || ci != L->ci)
+    StkId f = (L->status != LUA_YIELD || ci != L->ci)
-      p = ci_func(ci)->p;
+              ? ci->func
-    else  /* real 'func' was saved in 'extra' field */
+              : restorestack(L, ci->extra);
-      p = clLvalue(restorestack(L, ci->extra))->p;
+    Proto *p = clLvalue(f)->p;
     return p->code <= ci->u.l.savedpc &&
            ci->u.l.savedpc <= p->code + p->sizecode;
   }
@@ -305,9 +311,9 @@ static void checkstack (global_State *g, lua_State *L1) {
     lua_assert(ci->top <= L1->stack_last);
     lua_assert(lua_checkpc(L1, ci));
   }
-  if (L1->stack) {
+  if (L1->stack) {  /* complete thread? */
-    for (o = L1->stack; o < L1->top; o++)
+    for (o = L1->stack; o < L1->stack_last + EXTRA_STACK; o++)
-      checkliveness(g, o);
+      checkliveness(g, o);  /* entire stack must have valid values */
   }
   else lua_assert(L1->stacksize == 0);
 }
@@ -534,7 +540,7 @@ static int listk (lua_State *L) {
 
 static int listlocals (lua_State *L) {
   Proto *p;
-  int pc = (int)luaL_checkinteger(L, 2) - 1;
+  int pc = cast_int(luaL_checkinteger(L, 2)) - 1;
   int i = 0;
   const char *name;
   luaL_argcheck(L, lua_isfunction(L, 1) && !lua_iscfunction(L, 1),
@@ -549,12 +555,25 @@ static int listlocals (lua_State *L) {
 
 
 
+static void printstack (lua_State *L) {
+  int i;
+  int n = lua_gettop(L);
+  for (i = 1; i <= n; i++) {
+    printf("%3d: %s\n", i, luaL_tolstring(L, i, NULL));
+    lua_pop(L, 1);
+  }
+  printf("\n");
+}
+
 
 static int get_limits (lua_State *L) {
   lua_createtable(L, 0, 5);
   setnameval(L, "BITS_INT", LUAI_BITSINT);
+  setnameval(L, "MAXARG_Ax", MAXARG_Ax);
+  setnameval(L, "MAXARG_Bx", MAXARG_Bx);
+  setnameval(L, "MAXARG_sBx", MAXARG_sBx);
+  setnameval(L, "BITS_INT", LUAI_BITSINT);
   setnameval(L, "LFPF", LFIELDS_PER_FLUSH);
-  setnameval(L, "MAXSTACK", MAXSTACK);
   setnameval(L, "NUM_OPCODES", NUM_OPCODES);
   return 1;
 }
@@ -657,13 +676,13 @@ static int stacklevel (lua_State *L) {
   lua_pushinteger(L, (L->top - L->stack));
   lua_pushinteger(L, (L->stack_last - L->stack));
   lua_pushinteger(L, (unsigned long)&a);
-  return 5;
+  return 3;
 }
 
 
 static int table_query (lua_State *L) {
   const Table *t;
-  int i = (int)luaL_optinteger(L, 2, -1);
+  int i = cast_int(luaL_optinteger(L, 2, -1));
   luaL_checktype(L, 1, LUA_TTABLE);
   t = hvalue(obj_at(L, 1));
   if (i == -1) {
@@ -696,7 +715,7 @@ static int table_query (lua_State *L) {
 
 static int string_query (lua_State *L) {
   stringtable *tb = &G(L)->strt;
-  int s = (int)luaL_optinteger(L, 1, 0) - 1;
+  int s = cast_int(luaL_optinteger(L, 1, 0)) - 1;
   if (s == -1) {
     lua_pushinteger(L ,tb->size);
     lua_pushinteger(L ,tb->nuse);
@@ -705,7 +724,7 @@ static int string_query (lua_State *L) {
   else if (s < tb->size) {
     TString *ts;
     int n = 0;
-    for (ts = tb->hash[s]; ts != NULL; ts = ts->hnext) {
+    for (ts = tb->hash[s]; ts != NULL; ts = ts->u.hnext) {
       setsvalue2s(L, L->top, ts);
       api_incr_top(L);
       n++;
@@ -734,14 +753,14 @@ static int getref (lua_State *L) {
 
 static int unref (lua_State *L) {
   int level = lua_gettop(L);
-  luaL_unref(L, LUA_REGISTRYINDEX, (int)luaL_checkinteger(L, 1));
+  luaL_unref(L, LUA_REGISTRYINDEX, cast_int(luaL_checkinteger(L, 1)));
   lua_assert(lua_gettop(L) == level);
   return 0;
 }
 
 
 static int upvalue (lua_State *L) {
-  int n = (int)luaL_checkinteger(L, 2);
+  int n = cast_int(luaL_checkinteger(L, 2));
   luaL_checktype(L, 1, LUA_TFUNCTION);
   if (lua_isnone(L, 3)) {
     const char *name = lua_getupvalue(L, 1, n);
@@ -897,12 +916,64 @@ static int int2fb_aux (lua_State *L) {
 }
 
 
+static int log2_aux (lua_State *L) {
+  unsigned int x = (unsigned int)luaL_checkinteger(L, 1);
+  lua_pushinteger(L, luaO_ceillog2(x));
+  return 1;
+}
+
+
+struct Aux { jmp_buf jb; const char *paniccode; lua_State *L; };
 
 /*
-** {======================================================
+** does a long-jump back to "main program".
+*/
+static int panicback (lua_State *L) {
+  struct Aux *b;
+  lua_checkstack(L, 1);  /* open space for 'Aux' struct */
+  lua_getfield(L, LUA_REGISTRYINDEX, "_jmpbuf");  /* get 'Aux' struct */
+  b = (struct Aux *)lua_touserdata(L, -1);
+  lua_pop(L, 1);  /* remove 'Aux' struct */
+  runC(b->L, L, b->paniccode);  /* run optional panic code */
+  longjmp(b->jb, 1);
+  return 1;  /* to avoid warnings */
+}
+
+static int checkpanic (lua_State *L) {
+  struct Aux b;
+  void *ud;
+  lua_State *L1;
+  const char *code = luaL_checkstring(L, 1);
+  lua_Alloc f = lua_getallocf(L, &ud);
+  b.paniccode = luaL_optstring(L, 2, "");
+  b.L = L;
+  L1 = lua_newstate(f, ud);  /* create new state */
+  if (L1 == NULL) {  /* error? */
+    lua_pushnil(L);
+    return 1;
+  }
+  lua_atpanic(L1, panicback);  /* set its panic function */
+  lua_pushlightuserdata(L1, &b);
+  lua_setfield(L1, LUA_REGISTRYINDEX, "_jmpbuf");  /* store 'Aux' struct */
+  if (setjmp(b.jb) == 0) {  /* set jump buffer */
+    runC(L, L1, code);  /* run code unprotected */
+    lua_pushliteral(L, "no errors");
+  }
+  else {  /* error handling */
+    /* move error message to original state */
+    lua_pushstring(L, lua_tostring(L1, -1));
+  }
+  lua_close(L1);
+  return 1;
+}
+
+
+
+/*
+** {====================================================================
 ** function to test the API with C. It interprets a kind of assembler
 ** language with calls to the API, so the test can be driven by Lua code
-** =======================================================
+** =====================================================================
 */
 
 
@@ -925,7 +996,7 @@ static int getnum_aux (lua_State *L, lua_State *L1, const char **pc) {
   int sig = 1;
   skip(pc);
   if (**pc == '.') {
-    res = lua_tointeger(L1, -1);
+    res = cast_int(lua_tointeger(L1, -1));
     lua_pop(L1, 1);
     (*pc)++;
     return res;
@@ -996,7 +1067,7 @@ static int Cfunck (lua_State *L, int status, lua_KContext ctx);
 ** LUA_OPUNM   -> _
 ** LUA_OPBNOT  -> !
 */
-static char ops[] = "+-*%^/\\&|~<>_!";
+static const char ops[] = "+-*%^/\\&|~<>_!";
 
 static int runC (lua_State *L, lua_State *L1, const char *pc) {
   char buff[300];
@@ -1032,12 +1103,18 @@ static int runC (lua_State *L, lua_State *L1, const char *pc) {
     }
     else if EQ("checkstack") {
       int sz = getnum;
-      luaL_checkstack(L1, sz, getstring);
+      const char *msg = getstring;
+      if (*msg == '\0')
+        msg = NULL;  /* to test 'luaL_checkstack' with no message */
+      luaL_checkstack(L1, sz, msg);
     }
     else if EQ("compare") {
+      const char *opt = getstring;  /* EQ, LT, or LE */
+      int op = (opt[0] == 'E') ? LUA_OPEQ
+                               : (opt[1] == 'T') ? LUA_OPLT : LUA_OPLE;
       int a = getindex;
       int b = getindex;
-      lua_pushboolean(L1, lua_compare(L1, a, b, getnum));
+      lua_pushboolean(L1, lua_compare(L1, a, b, op));
     }
     else if EQ("concat") {
       lua_concat(L1, getnum);
@@ -1113,9 +1190,8 @@ static int runC (lua_State *L, lua_State *L1, const char *pc) {
       luaL_loadfile(L1, luaL_checkstring(L1, getnum));
     }
     else if EQ("loadstring") {
-      size_t sl;
+      const char *s = luaL_checkstring(L1, getnum);
-      const char *s = luaL_checklstring(L1, getnum, &sl);
+      luaL_loadstring(L1, s);
-      luaL_loadbuffer(L1, s, sl, s);
     }
     else if EQ("newmetatable") {
       lua_pushboolean(L1, luaL_newmetatable(L1, getstring));
@@ -1138,7 +1214,7 @@ static int runC (lua_State *L, lua_State *L1, const char *pc) {
     else if EQ("pcall") {
       int narg = getnum;
       int nres = getnum;
-      status = lua_pcall(L1, narg, nres, 0);
+      status = lua_pcall(L1, narg, nres, getnum);
     }
     else if EQ("pcallk") {
       int narg = getnum;
@@ -1155,15 +1231,7 @@ static int runC (lua_State *L, lua_State *L1, const char *pc) {
         printf("%s\n", luaL_tolstring(L1, n, NULL));
         lua_pop(L1, 1);
       }
-      else {
+      else printstack(L1);
-        int i;
-        n = lua_gettop(L1);
-        for (i = 1; i <= n; i++) {
-          printf("%s  ", luaL_tolstring(L1, i, NULL));
-          lua_pop(L1, 1);
-        }
-        printf("\n");
-      }
     }
     else if EQ("pushbool") {
       lua_pushboolean(L1, getnum);
@@ -1196,6 +1264,14 @@ static int runC (lua_State *L, lua_State *L1, const char *pc) {
       int t = getindex;
       lua_rawgeti(L1, t, getnum);
     }
+    else if EQ("rawgetp") {
+      int t = getindex;
+      lua_rawgetp(L1, t, cast(void *, cast(size_t, getnum)));
+    }
+    else if EQ("rawsetp") {
+      int t = getindex;
+      lua_rawsetp(L1, t, cast(void *, cast(size_t, getnum)));
+    }
     else if EQ("remove") {
       lua_remove(L1, getnum);
     }
@@ -1244,6 +1320,9 @@ static int runC (lua_State *L, lua_State *L1, const char *pc) {
       int i = getindex;
       lua_pushboolean(L1, luaL_testudata(L1, i, getstring) != NULL);
     }
+    else if EQ("error") {
+      lua_error(L1);
+    }
     else if EQ("throw") {
 #if defined(__cplusplus)
 static struct X { int x; } x;
@@ -1271,7 +1350,7 @@ static struct X { int x; } x;
     else if EQ("tostring") {
       const char *s = lua_tostring(L1, getindex);
       const char *s1 = lua_pushstring(L1, s);
-      lua_assert((s == NULL && s1 == NULL) || (strcmp)(s, s1) == 0);
+      lua_assert((s == NULL && s1 == NULL) || strcmp(s, s1) == 0);
     }
     else if EQ("type") {
       lua_pushstring(L1, luaL_typename(L1, getnum));
@@ -1366,7 +1445,7 @@ static void Chook (lua_State *L, lua_Debug *ar) {
 
 
 /*
-** sets registry.C_HOOK[L] = scpt and sets Chook as a hook
+** sets 'registry.C_HOOK[L] = scpt' and sets 'Chook' as a hook
 */
 static void sethookaux (lua_State *L, int mask, int count, const char *scpt) {
   if (*scpt == '\0') {  /* no script? */
@@ -1393,7 +1472,7 @@ static int sethook (lua_State *L) {
   else {
     const char *scpt = luaL_checkstring(L, 1);
     const char *smask = luaL_checkstring(L, 2);
-    int count = (int)luaL_optinteger(L, 3, 0);
+    int count = cast_int(luaL_optinteger(L, 3, 0));
     int mask = 0;
     if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
     if (strchr(smask, 'r')) mask |= LUA_MASKRET;
@@ -1436,11 +1515,13 @@ static const struct luaL_Reg tests_funcs[] = {
   {"getref", getref},
   {"hash", hash_query},
   {"int2fb", int2fb_aux},
+  {"log2", log2_aux},
   {"limits", get_limits},
   {"listcode", listcode},
   {"listk", listk},
   {"listlocals", listlocals},
   {"loadlib", loadlib},
+  {"checkpanic", checkpanic},
   {"newstate", newstate},
   {"newuserdata", newuserdata},
   {"num2int", num2int},

ltests.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltests.h,v 2.39 2014/07/24 19:33:29 roberto Exp roberto $
+** $Id: ltests.h,v 2.46 2014/12/19 13:33:06 roberto Exp roberto $
 ** Internal Header for Debugging of the Lua Implementation
 ** See Copyright Notice in lua.h
 */
@@ -46,7 +46,7 @@ typedef struct Memcontrol {
   unsigned long objcount[LUA_NUMTAGS];
 } Memcontrol;
 
-extern Memcontrol l_memcontrol;
+LUA_API Memcontrol l_memcontrol;
 
 
 /*
@@ -81,9 +81,10 @@ struct L_EXTRA { int lock; int *plock; };
 
 
 
-int luaB_opentests (lua_State *L);
+LUA_API int luaB_opentests (lua_State *L);
 
-void *debug_realloc (void *ud, void *block, size_t osize, size_t nsize);
+LUA_API void *debug_realloc (void *ud, void *block,
+                             size_t osize, size_t nsize);
 
 #if defined(lua_c)
 #define luaL_newstate()		lua_newstate(debug_realloc, &l_memcontrol)
@@ -100,9 +101,13 @@ void *debug_realloc (void *ud, void *block, size_t osize, size_t nsize);
 #define MINSTRTABSIZE		2
 
 
+/* make stack-overflow tests run faster */
+#undef LUAI_MAXSTACK
+#define LUAI_MAXSTACK   50000
+
+
 #undef LUAI_USER_ALIGNMENT_T
 #define LUAI_USER_ALIGNMENT_T   union { char b[sizeof(void*) * 8]; }
 
-
 #endif
 

ltm.c

@@ -1,15 +1,17 @@
 /*
-** $Id: ltm.c,v 2.28 2014/07/18 12:17:54 roberto Exp roberto $
+** $Id: ltm.c,v 2.33 2014/11/21 12:15:57 roberto Exp roberto $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
 
-
-#include <string.h>
-
 #define ltm_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <string.h>
+
 #include "lua.h"
 
 #include "ldebug.h"
@@ -84,7 +86,7 @@ const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
 void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
                   const TValue *p2, TValue *p3, int hasres) {
   ptrdiff_t result = savestack(L, p3);
-  setobj2s(L, L->top++, f);  /* push function */
+  setobj2s(L, L->top++, f);  /* push function (assume EXTRA_STACK) */
   setobj2s(L, L->top++, p1);  /* 1st argument */
   setobj2s(L, L->top++, p2);  /* 2nd argument */
   if (!hasres)  /* no result? 'p3' is third argument */
@@ -115,15 +117,18 @@ void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
     switch (event) {
       case TM_CONCAT:
         luaG_concaterror(L, p1, p2);
-      case TM_IDIV: case TM_BAND: case TM_BOR: case TM_BXOR:
+      /* call never returns, but to avoid warnings: *//* FALLTHROUGH */
+      case TM_BAND: case TM_BOR: case TM_BXOR:
       case TM_SHL: case TM_SHR: case TM_BNOT: {
         lua_Number dummy;
         if (tonumber(p1, &dummy) && tonumber(p2, &dummy))
           luaG_tointerror(L, p1, p2);
-        /* else go through */
+        else
+          luaG_opinterror(L, p1, p2, "perform bitwise operation on");
       }
+      /* calls never return, but to avoid warnings: *//* FALLTHROUGH */
       default:
-        luaG_aritherror(L, p1, p2);
+        luaG_opinterror(L, p1, p2, "perform arithmetic on");
     }
   }
 }

ltm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltm.h,v 2.19 2013/12/30 20:47:58 roberto Exp roberto $
+** $Id: ltm.h,v 2.20 2014/06/10 18:53:18 roberto Exp roberto $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
@@ -21,7 +21,7 @@ typedef enum {
   TM_GC,
   TM_MODE,
   TM_LEN,
-  TM_EQ,  /* last tag method with `fast' access */
+  TM_EQ,  /* last tag method with fast access */
   TM_ADD,
   TM_SUB,
   TM_MUL,

lua.c

@@ -1,17 +1,19 @@
 /*
-** $Id: lua.c,v 1.216 2014/10/20 18:19:26 roberto Exp roberto $
+** $Id: lua.c,v 1.224 2015/03/10 14:15:06 roberto Exp roberto $
 ** Lua stand-alone interpreter
 ** See Copyright Notice in lua.h
 */
 
+#define lua_c
+
+#include "lprefix.h"
+
 
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define lua_c
-
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -50,14 +52,14 @@
 #include <unistd.h>
 #define lua_stdin_is_tty()	isatty(0)
 
-#elif defined(LUA_WIN)		/* }{ */
+#elif defined(LUA_USE_WINDOWS)	/* }{ */
 
 #include <io.h>
 #define lua_stdin_is_tty()	_isatty(_fileno(stdin))
 
 #else				/* }{ */
 
-/* ANSI definition */
+/* ISO C definition */
 #define lua_stdin_is_tty()	1  /* assume stdin is a tty */
 
 #endif				/* } */
@@ -78,9 +80,7 @@
 #include <readline/readline.h>
 #include <readline/history.h>
 #define lua_readline(L,b,p)	((void)L, ((b)=readline(p)) != NULL)
-#define lua_saveline(L,idx) \
+#define lua_saveline(L,line)	((void)L, add_history(line))
-        if (lua_rawlen(L,idx) > 0)  /* non-empty line? */ \
-          add_history(lua_tostring(L, idx));  /* add it to history */
 #define lua_freeline(L,b)	((void)L, free(b))
 
 #else				/* }{ */
@@ -88,7 +88,7 @@
 #define lua_readline(L,b,p) \
         ((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
         fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
-#define lua_saveline(L,idx)	{ (void)L; (void)idx; }
+#define lua_saveline(L,line)	{ (void)L; (void)line; }
 #define lua_freeline(L,b)	{ (void)L; (void)b; }
 
 #endif				/* } */
@@ -126,12 +126,12 @@ static void laction (int i) {
 
 
 static void print_usage (const char *badoption) {
-  luai_writestringerror("%s: ", progname);
+  lua_writestringerror("%s: ", progname);
   if (badoption[1] == 'e' || badoption[1] == 'l')
-    luai_writestringerror("'%s' needs argument\n", badoption);
+    lua_writestringerror("'%s' needs argument\n", badoption);
   else
-    luai_writestringerror("unrecognized option '%s'\n", badoption);
+    lua_writestringerror("unrecognized option '%s'\n", badoption);
-  luai_writestringerror(
+  lua_writestringerror(
   "usage: %s [options] [script [args]]\n"
   "Available options are:\n"
   "  -e stat  execute string 'stat'\n"
@@ -151,8 +151,8 @@ static void print_usage (const char *badoption) {
 ** (if present)
 */
 static void l_message (const char *pname, const char *msg) {
-  if (pname) luai_writestringerror("%s: ", pname);
+  if (pname) lua_writestringerror("%s: ", pname);
-  luai_writestringerror("%s\n", msg);
+  lua_writestringerror("%s\n", msg);
 }
 
 
@@ -208,8 +208,8 @@ static int docall (lua_State *L, int narg, int nres) {
 
 
 static void print_version (void) {
-  luai_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
+  lua_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
-  luai_writeline();
+  lua_writeline();
 }
 
 
@@ -313,11 +313,11 @@ static int pushline (lua_State *L, int firstline) {
   lua_pop(L, 1);  /* remove prompt */
   l = strlen(b);
   if (l > 0 && b[l-1] == '\n')  /* line ends with newline? */
-    b[l-1] = '\0';  /* remove it */
+    b[--l] = '\0';  /* remove it */
   if (firstline && b[0] == '=')  /* for compatibility with 5.2, ... */
     lua_pushfstring(L, "return %s", b + 1);  /* change '=' to 'return' */
   else
-    lua_pushstring(L, b);
+    lua_pushlstring(L, b, l);
   lua_freeline(L, b);
   return 1;
 }
@@ -334,8 +334,12 @@ static int addreturn (lua_State *L) {
   lua_pushvalue(L, -2);  /* duplicate line */
   lua_concat(L, 2);  /* new line is "return ..." */
   line = lua_tolstring(L, -1, &len);
-  if ((status = luaL_loadbuffer(L, line, len, "=stdin")) == LUA_OK)
+  if ((status = luaL_loadbuffer(L, line, len, "=stdin")) == LUA_OK) {
     lua_remove(L, -3);  /* remove original line */
+    line += sizeof("return")/sizeof(char);  /* remove 'return' for history */
+    if (line[0] != '\0')  /* non empty? */
+      lua_saveline(L, line);  /* keep history */
+  }
   else
     lua_pop(L, 2);  /* remove result from 'luaL_loadbuffer' and new line */
   return status;
@@ -350,8 +354,10 @@ static int multiline (lua_State *L) {
     size_t len;
     const char *line = lua_tolstring(L, 1, &len);  /* get what it has */
     int status = luaL_loadbuffer(L, line, len, "=stdin");  /* try it */
-    if (!incomplete(L, status) || !pushline(L, 0))
+    if (!incomplete(L, status) || !pushline(L, 0)) {
+      lua_saveline(L, line);  /* keep history */
       return status;  /* cannot or should not try to add continuation line */
+    }
     lua_pushliteral(L, "\n");  /* add newline... */
     lua_insert(L, -2);  /* ...between the two lines */
     lua_concat(L, 3);  /* join them */
@@ -372,7 +378,6 @@ static int loadline (lua_State *L) {
     return -1;  /* no input */
   if ((status = addreturn(L)) != LUA_OK)  /* 'return ...' did not work? */
     status = multiline(L);  /* try as command, maybe with continuation lines */
-  lua_saveline(L, 1);  /* keep history */
   lua_remove(L, 1);  /* remove line from the stack */
   lua_assert(lua_gettop(L) == 1);
   return status;
@@ -410,7 +415,7 @@ static void doREPL (lua_State *L) {
     else report(L, status);
   }
   lua_settop(L, 0);  /* clear stack */
-  luai_writeline();
+  lua_writeline();
   progname = oldprogname;
 }
 
@@ -420,8 +425,7 @@ static void doREPL (lua_State *L) {
 */
 static int pushargs (lua_State *L) {
   int i, n;
-  lua_getglobal(L, "arg");
+  if (lua_getglobal(L, "arg") != LUA_TTABLE)
-  if (!lua_istable(L, -1))
     luaL_error(L, "'arg' is not a table");
   n = (int)luaL_len(L, -1);
   luaL_checkstack(L, n + 3, "too many arguments to script");
@@ -481,14 +485,14 @@ static int collectargs (char **argv, int *first) {
         args |= has_E;
         break;
       case 'i':
-        args |= has_i;  /* goes through  (-i implies -v) */
+        args |= has_i;  /* (-i implies -v) *//* FALLTHROUGH */ 
       case 'v':
         if (argv[i][2] != '\0')  /* extra characters after 1st? */
           return has_error;  /* invalid option */
         args |= has_v;
         break;
       case 'e':
-        args |= has_e;  /* go through */
+        args |= has_e;  /* FALLTHROUGH */
       case 'l':  /* both options need an argument */
         if (argv[i][2] == '\0') {  /* no concatenated argument? */
           i++;  /* try next 'argv' */
@@ -512,17 +516,16 @@ static int collectargs (char **argv, int *first) {
 static int runargs (lua_State *L, char **argv, int n) {
   int i;
   for (i = 1; i < n; i++) {
-    int status;
     int option = argv[i][1];
     lua_assert(argv[i][0] == '-');  /* already checked */
     if (option == 'e' || option == 'l') {
+      int status;
       const char *extra = argv[i] + 2;  /* both options need an argument */
       if (*extra == '\0') extra = argv[++i];
       lua_assert(extra != NULL);
-      if (option == 'e')
+      status = (option == 'e')
-        status = dostring(L, extra, "=(command line)");
+               ? dostring(L, extra, "=(command line)")
-      else
+               : dolibrary(L, extra);
-        status = dolibrary(L, extra);
       if (status != LUA_OK) return 0;
     }
   }

lua.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lua.h,v 1.318 2014/10/15 14:27:40 roberto Exp roberto $
+** $Id: lua.h,v 1.327 2015/03/10 14:17:51 roberto Exp roberto $
 ** Lua - A Scripting Language
 ** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
 ** See Copyright Notice at the end of this file
@@ -19,25 +19,27 @@
 #define LUA_VERSION_MAJOR	"5"
 #define LUA_VERSION_MINOR	"3"
 #define LUA_VERSION_NUM		503
-#define LUA_VERSION_RELEASE	"beta"
+#define LUA_VERSION_RELEASE	"1"
 
 #define LUA_VERSION	"Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
 #define LUA_RELEASE	LUA_VERSION "." LUA_VERSION_RELEASE
-#define LUA_COPYRIGHT	LUA_RELEASE "  Copyright (C) 1994-2014 Lua.org, PUC-Rio"
+#define LUA_COPYRIGHT	LUA_RELEASE "  Copyright (C) 1994-2015 Lua.org, PUC-Rio"
 #define LUA_AUTHORS	"R. Ierusalimschy, L. H. de Figueiredo, W. Celes"
 
 
 /* mark for precompiled code ('<esc>Lua') */
-#define LUA_SIGNATURE	"\033Lua"
+#define LUA_SIGNATURE	"\x1bLua"
 
 /* option for multiple returns in 'lua_pcall' and 'lua_call' */
 #define LUA_MULTRET	(-1)
 
 
 /*
-** pseudo-indices
+** Pseudo-indices
+** (-LUAI_MAXSTACK is the minimum valid index; we keep some free empty
+** space after that to help overflow detection)
 */
-#define LUA_REGISTRYINDEX	LUAI_FIRSTPSEUDOIDX
+#define LUA_REGISTRYINDEX	(-LUAI_MAXSTACK - 1000)
 #define lua_upvalueindex(i)	(LUA_REGISTRYINDEX - (i))
 
 
@@ -159,7 +161,7 @@ LUA_API void  (lua_settop) (lua_State *L, int idx);
 LUA_API void  (lua_pushvalue) (lua_State *L, int idx);
 LUA_API void  (lua_rotate) (lua_State *L, int idx, int n);
 LUA_API void  (lua_copy) (lua_State *L, int fromidx, int toidx);
-LUA_API int   (lua_checkstack) (lua_State *L, int sz);
+LUA_API int   (lua_checkstack) (lua_State *L, int n);
 
 LUA_API void  (lua_xmove) (lua_State *from, lua_State *to, int n);
 
@@ -222,7 +224,7 @@ LUA_API int   (lua_compare) (lua_State *L, int idx1, int idx2, int op);
 LUA_API void        (lua_pushnil) (lua_State *L);
 LUA_API void        (lua_pushnumber) (lua_State *L, lua_Number n);
 LUA_API void        (lua_pushinteger) (lua_State *L, lua_Integer n);
-LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t l);
+LUA_API const char *(lua_pushlstring) (lua_State *L, const char *s, size_t len);
 LUA_API const char *(lua_pushstring) (lua_State *L, const char *s);
 LUA_API const char *(lua_pushvfstring) (lua_State *L, const char *fmt,
                                                       va_list argp);
@@ -236,7 +238,7 @@ LUA_API int   (lua_pushthread) (lua_State *L);
 /*
 ** get functions (Lua -> stack)
 */
-LUA_API int (lua_getglobal) (lua_State *L, const char *var);
+LUA_API int (lua_getglobal) (lua_State *L, const char *name);
 LUA_API int (lua_gettable) (lua_State *L, int idx);
 LUA_API int (lua_getfield) (lua_State *L, int idx, const char *k);
 LUA_API int (lua_geti) (lua_State *L, int idx, lua_Integer n);
@@ -253,7 +255,7 @@ LUA_API int  (lua_getuservalue) (lua_State *L, int idx);
 /*
 ** set functions (stack -> Lua)
 */
-LUA_API void  (lua_setglobal) (lua_State *L, const char *var);
+LUA_API void  (lua_setglobal) (lua_State *L, const char *name);
 LUA_API void  (lua_settable) (lua_State *L, int idx);
 LUA_API void  (lua_setfield) (lua_State *L, int idx, const char *k);
 LUA_API void  (lua_seti) (lua_State *L, int idx, lua_Integer n);
@@ -276,8 +278,7 @@ LUA_API int   (lua_pcallk) (lua_State *L, int nargs, int nresults, int errfunc,
 #define lua_pcall(L,n,r,f)	lua_pcallk(L, (n), (r), (f), 0, NULL)
 
 LUA_API int   (lua_load) (lua_State *L, lua_Reader reader, void *dt,
-                                        const char *chunkname,
+                          const char *chunkname, const char *mode);
-                                        const char *mode);
 
 LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);
 
@@ -285,12 +286,13 @@ LUA_API int (lua_dump) (lua_State *L, lua_Writer writer, void *data, int strip);
 /*
 ** coroutine functions
 */
-LUA_API int  (lua_yieldk) (lua_State *L, int nresults, lua_KContext ctx,
+LUA_API int  (lua_yieldk)     (lua_State *L, int nresults, lua_KContext ctx,
-                           lua_KFunction k);
+                               lua_KFunction k);
+LUA_API int  (lua_resume)     (lua_State *L, lua_State *from, int narg);
+LUA_API int  (lua_status)     (lua_State *L);
+LUA_API int (lua_isyieldable) (lua_State *L);
+
 #define lua_yield(L,n)		lua_yieldk(L, (n), 0, NULL)
-LUA_API int  (lua_resume) (lua_State *L, lua_State *from, int narg);
-LUA_API int  (lua_status) (lua_State *L);
-LUA_API int lua_isyieldable (lua_State *L);
 
 
 /*
@@ -356,8 +358,7 @@ LUA_API void      (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
 #define lua_isnone(L,n)		(lua_type(L, (n)) == LUA_TNONE)
 #define lua_isnoneornil(L, n)	(lua_type(L, (n)) <= 0)
 
-#define lua_pushliteral(L, s)	\
+#define lua_pushliteral(L, s)	lua_pushstring(L, "" s)
-	lua_pushlstring(L, "" s, (sizeof(s)/sizeof(char))-1)
 
 #define lua_pushglobaltable(L)  \
 	lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS)
@@ -382,7 +383,7 @@ LUA_API void      (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
 #if defined(LUA_COMPAT_APIINTCASTS)
 
 #define lua_pushunsigned(L,n)	lua_pushinteger(L, (lua_Integer)(n))
-#define lua_tounsignedx(L,i,is)	((lua_Integer)lua_tointegerx(L,i,is))
+#define lua_tounsignedx(L,i,is)	((lua_Unsigned)lua_tointegerx(L,i,is))
 #define lua_tounsigned(L,i)	lua_tounsignedx(L,(i),NULL)
 
 #endif
@@ -459,7 +460,7 @@ struct lua_Debug {
 
 
 /******************************************************************************
-* Copyright (C) 1994-2014 Lua.org, PUC-Rio.
+* Copyright (C) 1994-2015 Lua.org, PUC-Rio.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the

luaconf.h

@@ -1,130 +1,174 @@
 /*
-** $Id: luaconf.h,v 1.219 2014/10/20 16:32:05 roberto Exp roberto $
+** $Id: luaconf.h,v 1.250 2015/04/03 18:41:57 roberto Exp roberto $
 ** Configuration file for Lua
 ** See Copyright Notice in lua.h
 */
 
 
-#ifndef lconfig_h
+#ifndef luaconf_h
-#define lconfig_h
+#define luaconf_h
+
+#include <limits.h>
+#include <stddef.h>
 
 
 /*
-** ==================================================================
+** ===================================================================
 ** Search for "@@" to find all configurable definitions.
 ** ===================================================================
 */
 
 
 /*
-** {==================================================================
+** {====================================================================
-@@ LUA_INT_INT / LUA_INT_LONG / LUA_INT_LONGLONG defines type for
+** System Configuration: macros to adapt (if needed) Lua to some
-@@ Lua integers; you must define one of them.
+** particular platform, for instance compiling it with 32-bit numbers or
-@@ LUA_REAL_FLOAT / LUA_REAL_DOUBLE / LUA_REAL_LONGDOUBLE defines
+** restricting it to C89.
-@@ type for Lua floats. You must define one of them.
-**
-** These definitions set the numeric types for Lua. Lua should work fine
-** with any mix of these previous options.  The usual configurations
-** are 64-bit integers and floats (the default) and 32-bit integers and
-** floats (Small Lua, for restricted platforms).
-**
-** Note that C compilers not compliant with C99 may not have
-** support for 'long long'. In that case, you should not use option
-** 'LUA_INT_LONGLONG'; use instead option 'LUA_32BITS' for Small Lua
-** (see below), or LUA_INT_LONG plus LUA_REAL_DOUBLE for an interpreter
-** with 32-bit integers and double floating-point numbers.
 ** =====================================================================
 */
 
 /*
-** Just uncomment the next line for Small Lua; you can also define
+@@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You
-** LUA_32BITS in the make file, but changing here you ensure that
+** can also define LUA_32BITS in the make file, but changing here you
-** all software connected to Lua will be compiled with the same
+** ensure that all software connected to Lua will be compiled with the
-** configuration.
+** same configuration.
 */
 /* #define LUA_32BITS */
 
-#if !defined(LUA_32BITS) && !defined(LUA_ANSI)
-#define LUA_INT_LONGLONG
-#define LUA_REAL_DOUBLE
-#else	/* Lua 32 bits */
-#define LUA_INT_LONG
-#define LUA_REAL_FLOAT
-#endif
 
-/* }================================================================== */
+/*
+@@ LUA_USE_C89 controls the use of non-ISO-C89 features.
+** Define it if you want Lua to avoid the use of a few C99 features
+** or Windows-specific features on Windows.
+*/
+/* #define LUA_USE_C89 */
 
 
 /*
-@@ LUA_ANSI controls the use of non-ansi features.
+** By default, Lua on Windows use (some) specific Windows features
-** CHANGE it (define it) if you want Lua to avoid the use of any
-** non-ansi feature or library.
 */
-#if !defined(LUA_ANSI) && defined(__STRICT_ANSI__)
+#if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
-#define LUA_ANSI
+#define LUA_USE_WINDOWS  /* enable goodies for regular Windows */
 #endif
 
 
-#if !defined(LUA_ANSI) && defined(_WIN32) && !defined(_WIN32_WCE)
+#if defined(LUA_USE_WINDOWS)
-#define LUA_WIN		/* enable goodies for regular Windows platforms */
+#define LUA_DL_DLL	/* enable support for DLL */
+#define LUA_USE_C89	/* broadly, Windows is C89 */
 #endif
 
-#if defined(LUA_WIN)
-#define	_CRT_SECURE_NO_WARNINGS  /* avoid warnings about ANSI C functions */
-#define LUA_DL_DLL
-#define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
-#endif
-
-
 
 #if defined(LUA_USE_LINUX)
-#define LUA_USE_C99
 #define LUA_USE_POSIX
 #define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
 #define LUA_USE_READLINE	/* needs some extra libraries */
 #endif
 
+
 #if defined(LUA_USE_MACOSX)
-#define LUA_USE_C99
 #define LUA_USE_POSIX
-#define LUA_USE_DLOPEN		/* does not need -ldl */
+#define LUA_USE_DLOPEN		/* MacOS does not need -ldl */
 #define LUA_USE_READLINE	/* needs an extra library: -lreadline */
 #endif
 
 
 /*
-@@ LUA_USE_C99 includes all functionality that depends on C 99.
+@@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
-** CHANGE it (define it) if your system is compatible.
+** C89 ('long' and 'double'); Windows always has '__int64', so it does
+** not need to use this case.
 */
-#if defined(LUA_USE_C99)
+#if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
-#define LUA_USE_AFORMAT		/* assume 'printf' handles 'aA' specifiers */
+#define LUA_C89_NUMBERS
+#endif
+
+
+
+/*
+@@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
+*/
+/* avoid undefined shifts */
+#if ((INT_MAX >> 15) >> 15) >= 1
+#define LUAI_BITSINT	32
+#else
+/* 'int' always must have at least 16 bits */
+#define LUAI_BITSINT	16
 #endif
 
 
 /*
-@@ LUA_USE_POSIX includes all functionality listed as X/Open System
+@@ LUA_INT_TYPE defines the type for Lua integers.
-@@ Interfaces Extension (XSI).
+@@ LUA_FLOAT_TYPE defines the type for Lua floats.
-** CHANGE it (define it) if your system is XSI compatible.
+** Lua should work fine with any mix of these options (if supported
+** by your C compiler). The usual configurations are 64-bit integers
+** and 'double' (the default), 32-bit integers and 'float' (for
+** restricted platforms), and 'long'/'double' (for C compilers not
+** compliant with C99, which may not have support for 'long long').
 */
-#if defined(LUA_USE_POSIX)
+
+/* predefined options for LUA_INT_TYPE */
+#define LUA_INT_INT		1
+#define LUA_INT_LONG		2
+#define LUA_INT_LONGLONG	3
+
+/* predefined options for LUA_FLOAT_TYPE */
+#define LUA_FLOAT_FLOAT		1
+#define LUA_FLOAT_DOUBLE	2
+#define LUA_FLOAT_LONGDOUBLE	3
+
+#if defined(LUA_32BITS)		/* { */
+/*
+** 32-bit integers and 'float'
+*/
+#if LUAI_BITSINT >= 32  /* use 'int' if big enough */
+#define LUA_INT_TYPE	LUA_INT_INT
+#else  /* otherwise use 'long' */
+#define LUA_INT_TYPE	LUA_INT_LONG
+#endif
+#define LUA_FLOAT_TYPE	LUA_FLOAT_FLOAT
+
+#elif defined(LUA_C89_NUMBERS)	/* }{ */
+/*
+** largest types available for C89 ('long' and 'double')
+*/
+#define LUA_INT_TYPE	LUA_INT_LONG
+#define LUA_FLOAT_TYPE	LUA_FLOAT_DOUBLE
+
+#endif				/* } */
+
+
+/*
+** default configuration for 64-bit Lua ('long long' and 'double')
+*/
+#if !defined(LUA_INT_TYPE)
+#define LUA_INT_TYPE	LUA_INT_LONGLONG
 #endif
 
+#if !defined(LUA_FLOAT_TYPE)
+#define LUA_FLOAT_TYPE	LUA_FLOAT_DOUBLE
+#endif								/* } */
+
+/* }================================================================== */
 
 
-#include <limits.h>
+
-#include <stddef.h>
+
+/*
+** {==================================================================
+** Configuration for Paths.
+** ===================================================================
+*/
 
 /*
 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
-@@ Lua libraries.
+** Lua libraries.
 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
-@@ C libraries.
+** C libraries.
 ** CHANGE them if your machine has a non-conventional directory
 ** hierarchy or if you want to install your libraries in
 ** non-conventional directories.
 */
 #define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
-#if defined(_WIN32) 	/* { */
+#if defined(_WIN32)	/* { */
 /*
 ** In Windows, any exclamation mark ('!') in the path is replaced by the
 ** path of the directory of the executable file of the current process.
@@ -135,7 +179,7 @@
 #define LUA_PATH_DEFAULT  \
 		LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
 		LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" \
-                LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
+		LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
 		".\\?.lua;" ".\\?\\init.lua"
 #define LUA_CPATH_DEFAULT \
 		LUA_CDIR"?.dll;" \
@@ -167,14 +211,14 @@
 #define LUA_DIRSEP	"/"
 #endif
 
+/* }================================================================== */
+
 
 /*
-@@ LUA_ENV is the name of the variable that holds the current
+** {==================================================================
-@@ environment, used to access global names.
+** Marks for exported symbols in the C code
-** CHANGE it if you do not like this name.
+** ===================================================================
 */
-#define LUA_ENV		"_ENV"
-
 
 /*
 @@ LUA_API is a mark for all core API functions.
@@ -207,10 +251,10 @@
 
 /*
 @@ LUAI_FUNC is a mark for all extern functions that are not to be
-@@ exported to outside modules.
+** exported to outside modules.
 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
-@@ that are not to be exported to outside modules (LUAI_DDEF for
+** that are not to be exported to outside modules (LUAI_DDEF for
-@@ definitions and LUAI_DDEC for declarations).
+** definitions and LUAI_DDEC for declarations).
 ** CHANGE them if you need to mark them in some special way. Elf/gcc
 ** (versions 3.2 and later) mark them as "hidden" to optimize access
 ** when Lua is compiled as a shared library. Not all elf targets support
@@ -222,82 +266,14 @@
 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
     defined(__ELF__)		/* { */
 #define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
+#else				/* }{ */
+#define LUAI_FUNC	extern
+#endif				/* } */
+
 #define LUAI_DDEC	LUAI_FUNC
 #define LUAI_DDEF	/* empty */
 
-#else				/* }{ */
+/* }================================================================== */
-#define LUAI_FUNC	extern
-#define LUAI_DDEC	extern
-#define LUAI_DDEF	/* empty */
-#endif				/* } */
-
-
-
-/*
-@@ LUA_EXTRASPACE defines the size of a raw memory area associated with
-** a Lua state with very fast access.
-** CHANGE it if you need a different size.
-*/
-#define LUA_EXTRASPACE		(sizeof(void *))
-
-
-/*
-@@ LUA_QL describes how error messages quote program elements.
-** Lua does not use these macros anymore; they are here for
-** compatibility only.
-*/
-#define LUA_QL(x)	"'" x "'"
-#define LUA_QS		LUA_QL("%s")
-
-
-/*
-@@ LUA_IDSIZE gives the maximum size for the description of the source
-@@ of a function in debug information.
-** CHANGE it if you want a different size.
-*/
-#define LUA_IDSIZE	60
-
-
-/*
-@@ luai_writestring/luai_writeline define how 'print' prints its results.
-** They are only used in libraries and the stand-alone program.
-*/
-#define luai_writestring(s,l)	fwrite((s), sizeof(char), (l), stdout)
-#define luai_writeline()	(luai_writestring("\n", 1), fflush(stdout))
-
-/*
-@@ luai_writestringerror defines how to print error messages.
-** (A format string with one argument is enough for Lua...)
-*/
-#define luai_writestringerror(s,p) \
-	(fprintf(stderr, (s), (p)), fflush(stderr))
-
-
-/*
-@@ LUAI_MAXSHORTLEN is the maximum length for short strings, that is,
-** strings that are internalized. (Cannot be smaller than reserved words
-** or tags for metamethods, as these strings must be internalized;
-** #("function") = 8, #("__newindex") = 10.)
-*/
-#define LUAI_MAXSHORTLEN        40
-
-
-/*
-@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
-@@ functions.  It must be a numerical type; Lua will use 'intptr_t' if
-@@ available.
-*/
-#if defined (LUA_USE_C99)
-#include <stdint.h>
-#if defined (INTPTR_MAX)  /* even in C99 this type is optional */
-#define LUA_KCONTEXT	intptr_t
-#endif
-#endif
-
-#if !defined(LUA_KCONTEXT)
-/* default definition (the nearest thing to 'intptr_t' in C89) */
-#define LUA_KCONTEXT	ptrdiff_t
-#endif
 
 
 /*
@@ -337,20 +313,15 @@
 */
 #define LUA_COMPAT_APIINTCASTS
 
-
-/*
-@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
-@@ a float mark ('.0').
-** This macro is not on by default even in compatibility mode,
-** because this is not really an incompatibility.
-*/
-/* #define LUA_COMPAT_FLOATSTRING */
-
 #endif				/* } */
 
 
 #if defined(LUA_COMPAT_5_1)	/* { */
 
+/* Incompatibilities from 5.2 -> 5.3 */
+#define LUA_COMPAT_MATHLIB
+#define LUA_COMPAT_APIINTCASTS
+
 /*
 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
 ** You can replace it with 'table.unpack'.
@@ -410,100 +381,46 @@
 
 #endif				/* } */
 
+
+/*
+@@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
+@@ a float mark ('.0').
+** This macro is not on by default even in compatibility mode,
+** because this is not really an incompatibility.
+*/
+/* #define LUA_COMPAT_FLOATSTRING */
+
 /* }================================================================== */
 
 
 
-/*
-@@ LUAI_BITSINT defines the number of bits in an int.
-** CHANGE here if Lua cannot automatically detect the number of bits of
-** your machine. Probably you do not need to change this.
-*/
-/* avoid overflows in comparison */
-#if INT_MAX-20 < 32760		/* { */
-#define LUAI_BITSINT	16
-#elif INT_MAX > 2147483640L	/* }{ */
-/* int has at least 32 bits */
-#define LUAI_BITSINT	32
-#else				/* }{ */
-#error "you must define LUA_BITSINT with number of bits in an integer"
-#endif				/* } */
-
-
-/*
-@@ LUA_INT32 is an signed integer with exactly 32 bits.
-@@ LUAI_UMEM is an unsigned integer big enough to count the total
-@@ memory used by Lua.
-@@ LUAI_MEM is a signed integer big enough to count the total memory
-@@ used by Lua.
-** CHANGE here if for some weird reason the default definitions are not
-** good enough for your machine. Probably you do not need to change
-** this.
-*/
-#if LUAI_BITSINT >= 32		/* { */
-#define LUA_INT32	int
-#define LUAI_UMEM	size_t
-#define LUAI_MEM	ptrdiff_t
-#else				/* }{ */
-/* 16-bit ints */
-#define LUA_INT32	long
-#define LUAI_UMEM	unsigned long
-#define LUAI_MEM	long
-#endif				/* } */
-
-
-/*
-@@ LUAI_MAXSTACK limits the size of the Lua stack.
-** CHANGE it if you need a different limit. This limit is arbitrary;
-** its only purpose is to stop Lua from consuming unlimited stack
-** space (and to reserve some numbers for pseudo-indices).
-*/
-#if LUAI_BITSINT >= 32
-#define LUAI_MAXSTACK		1000000
-#else
-#define LUAI_MAXSTACK		15000
-#endif
-
-/* reserve some space for error handling */
-#define LUAI_FIRSTPSEUDOIDX	(-LUAI_MAXSTACK - 1000)
-
-
-
-
-/*
-@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
-** CHANGE it if it uses too much C-stack space.
-*/
-#define LUAL_BUFFERSIZE		BUFSIZ
-
-
 /*
 ** {==================================================================
 ** Configuration for Numbers.
-** Change these definitions if no predefined LUA_REAL_* / LUA_INT_*
+** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
 ** satisfy your needs.
 ** ===================================================================
 */
 
 /*
 @@ LUA_NUMBER is the floating-point type used by Lua.
-**
 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
 @@ over a floating number.
-**
+@@ l_mathlim(x) corrects limit name 'x' to the proper float type
+** by prefixing it with one of FLT/DBL/LDBL.
 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
 @@ LUA_NUMBER_FMT is the format for writing floats.
 @@ lua_number2str converts a float to a string.
-**
+@@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
-@@ l_mathop allows the addition of an 'l' or 'f' to all math operations
-**
 @@ lua_str2number converts a decimal numeric string to a number.
 */
 
-#if defined(LUA_REAL_FLOAT)		/* { single float */
+#if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT		/* { single float */
 
 #define LUA_NUMBER	float
 
+#define l_mathlim(n)		(FLT_##n)
+
 #define LUAI_UACNUMBER	double
 
 #define LUA_NUMBER_FRMLEN	""
@@ -514,10 +431,12 @@
 #define lua_str2number(s,p)	strtof((s), (p))
 
 
-#elif defined(LUA_REAL_LONGDOUBLE)	/* }{ long double */
+#elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE	/* }{ long double */
 
 #define LUA_NUMBER	long double
 
+#define l_mathlim(n)		(LDBL_##n)
+
 #define LUAI_UACNUMBER	long double
 
 #define LUA_NUMBER_FRMLEN	"L"
@@ -527,10 +446,12 @@
 
 #define lua_str2number(s,p)	strtold((s), (p))
 
-#elif defined(LUA_REAL_DOUBLE)		/* }{ double */
+#elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE	/* }{ double */
 
 #define LUA_NUMBER	double
 
+#define l_mathlim(n)		(DBL_##n)
+
 #define LUAI_UACNUMBER	double
 
 #define LUA_NUMBER_FRMLEN	""
@@ -540,75 +461,32 @@
 
 #define lua_str2number(s,p)	strtod((s), (p))
 
-#else					/* }{ */
+#else						/* }{ */
 
-#error "numeric real type not defined"
+#error "numeric float type not defined"
 
 #endif					/* } */
 
 
-#if !defined(LUA_USE_C99)
-/* 'strtof' and 'opf' variants for math functions are C99 */
-#undef l_mathop
-#undef lua_str2number
-#define l_mathop(op)		(lua_Number)op
-#define lua_str2number(s,p)	((lua_Number)strtod((s), (p)))
-#endif
-
-
 #define l_floor(x)		(l_mathop(floor)(x))
 
 #define lua_number2str(s,n)	sprintf((s), LUA_NUMBER_FMT, (n))
 
 
 /*
-@@ lua_numtointeger converts a float number to an integer, or
+@@ lua_numbertointeger converts a float number to an integer, or
 ** returns 0 if float is not within the range of a lua_Integer.
 ** (The range comparisons are tricky because of rounding. The tests
 ** here assume a two-complement representation, where MININTEGER always
 ** has an exact representation as a float; MAXINTEGER may not have one,
 ** and therefore its conversion to float may have an ill-defined value.)
 */
-#define lua_numtointeger(n,p) \
+#define lua_numbertointeger(n,p) \
   ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
    (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
       (*(p) = (LUA_INTEGER)(n), 1))
 
 
-/*
-@@ The luai_num* macros define the primitive operations over numbers.
-** They should work for any size of floating numbers.
-*/
-
-/* the following operations need the math library */
-#if defined(lobject_c) || defined(lvm_c)
-#include <math.h>
-#define luai_nummod(L,a,b,m)  \
-  { (m) = l_mathop(fmod)(a,b); if ((m) != 0 && (a)*(b) < 0) (m) += (b); }
-#define luai_numpow(L,a,b)	((void)L, l_mathop(pow)(a,b))
-#endif
-
-/* these are quite standard operations */
-#if defined(LUA_CORE)
-#define luai_numadd(L,a,b)	((a)+(b))
-#define luai_numsub(L,a,b)	((a)-(b))
-#define luai_nummul(L,a,b)	((a)*(b))
-#define luai_numdiv(L,a,b)	((a)/(b))
-#define luai_numunm(L,a)	(-(a))
-#define luai_numeq(a,b)		((a)==(b))
-#define luai_numlt(a,b)		((a)<(b))
-#define luai_numle(a,b)		((a)<=(b))
-#define luai_numisnan(a)	(!luai_numeq((a), (a)))
-#endif
-
-
-/*
-** The following macro checks whether an operation is not safe to be
-** performed by the constant folder. It should result in zero only if
-** the operation is safe.
-*/
-#define luai_numinvalidop(op,a,b)	0
-
 
 /*
 @@ LUA_INTEGER is the integer type used by Lua.
@@ -641,7 +519,7 @@
 
 /* now the variable definitions */
 
-#if defined(LUA_INT_INT)		/* { int */
+#if LUA_INT_TYPE == LUA_INT_INT		/* { int */
 
 #define LUA_INTEGER		int
 #define LUA_INTEGER_FRMLEN	""
@@ -649,7 +527,7 @@
 #define LUA_MAXINTEGER		INT_MAX
 #define LUA_MININTEGER		INT_MIN
 
-#elif defined(LUA_INT_LONG)	/* }{ long */
+#elif LUA_INT_TYPE == LUA_INT_LONG	/* }{ long */
 
 #define LUA_INTEGER		long
 #define LUA_INTEGER_FRMLEN	"l"
@@ -657,21 +535,10 @@
 #define LUA_MAXINTEGER		LONG_MAX
 #define LUA_MININTEGER		LONG_MIN
 
-#elif defined(LUA_INT_LONGLONG)	/* }{ long long */
+#elif LUA_INT_TYPE == LUA_INT_LONGLONG	/* }{ long long */
 
-#if defined(_WIN32)
+#if defined(LLONG_MAX)		/* { */
-
+/* use ISO C99 stuff */
-#define LUA_INTEGER		__int64
-#define LUA_INTEGER_FRMLEN	"I64"
-
-#define LUA_MAXINTEGER		_I64_MAX
-#define LUA_MININTEGER		_I64_MIN
-
-#else
-
-#if !defined(LLONG_MAX)
-#error "Compiler does not support 'long long'. See file 'luaconf.h' line 24"
-#endif
 
 #define LUA_INTEGER		long long
 #define LUA_INTEGER_FRMLEN	"ll"
@@ -679,27 +546,21 @@
 #define LUA_MAXINTEGER		LLONG_MAX
 #define LUA_MININTEGER		LLONG_MIN
 
-#endif
+#elif defined(LUA_USE_WINDOWS) /* }{ */
+/* in Windows, can use specific Windows types */
 
-#elif defined(LUA_INT_SHORT)	/* }{ short int */
+#define LUA_INTEGER		__int64
-/*
+#define LUA_INTEGER_FRMLEN	"I64"
-** this option is for tests only; it is not particularly useful and
-** it does not pass the test suit.
-*/
 
-#define LUA_INTEGER		short int
+#define LUA_MAXINTEGER		_I64_MAX
-#define LUA_INTEGER_FRMLEN	""
+#define LUA_MININTEGER		_I64_MIN
 
-#define LUA_MAXINTEGER		SHRT_MAX
+#else				/* }{ */
-#define LUA_MININTEGER		SHRT_MIN
 
-#undef  LUAI_UACINT
+#error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
-#define LUAI_UACINT		int
+  or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
 
-#undef  LUAI_MAXSTACK
+#endif				/* } */
-#define LUAI_MAXSTACK           15000
-
-#define l_castS2U(x)		((LUA_UNSIGNED)(unsigned short)(x))
 
 #else				/* }{ */
 
@@ -710,6 +571,168 @@
 /* }================================================================== */
 
 
+/*
+** {==================================================================
+** Dependencies with C99 and other C details
+** ===================================================================
+*/
+
+/*
+@@ lua_strx2number converts an hexadecimal numeric string to a number.
+** In C99, 'strtod' does that conversion. Otherwise, you can
+** leave 'lua_strx2number' undefined and Lua will provide its own
+** implementation.
+*/
+#if !defined(LUA_USE_C89)
+#define lua_strx2number(s,p)	lua_str2number(s,p)
+#endif
+
+
+/*
+@@ lua_number2strx converts a float to an hexadecimal numeric string. 
+** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
+** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
+** provide its own implementation.
+*/
+#if !defined(LUA_USE_C89)
+#define lua_number2strx(L,b,f,n)	sprintf(b,f,n)
+#endif
+
+
+/*
+** 'strtof' and 'opf' variants for math functions are not valid in
+** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
+** availability of these variants. ('math.h' is already included in
+** all files that use these macros.)
+*/
+#if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
+#undef l_mathop  /* variants not available */
+#undef lua_str2number
+#define l_mathop(op)		(lua_Number)op  /* no variant */
+#define lua_str2number(s,p)	((lua_Number)strtod((s), (p)))
+#endif
+
+
+/*
+@@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
+** functions.  It must be a numerical type; Lua will use 'intptr_t' if
+** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
+** 'intptr_t' in C89)
+*/
+#define LUA_KCONTEXT	ptrdiff_t
+
+#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
+    __STDC_VERSION__ >= 199901L
+#include <stdint.h>
+#if defined(INTPTR_MAX)  /* even in C99 this type is optional */
+#undef LUA_KCONTEXT
+#define LUA_KCONTEXT	intptr_t
+#endif
+#endif
+
+
+/*
+@@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
+** Change that if you do not want to use C locales. (Code using this
+** macro must include header 'locale.h'.)
+*/
+#if !defined(lua_getlocaledecpoint)
+#define lua_getlocaledecpoint()		(localeconv()->decimal_point[0])
+#endif
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Language Variations
+** =====================================================================
+*/
+
+/*
+@@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some
+** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from
+** numbers to strings. Define LUA_NOCVTS2N to turn off automatic
+** coercion from strings to numbers.
+*/
+/* #define LUA_NOCVTN2S */
+/* #define LUA_NOCVTS2N */
+
+
+/*
+@@ LUA_USE_APICHECK turns on several consistency checks on the C API.
+** Define it as a help when debugging C code.
+*/
+#if defined(LUA_USE_APICHECK)
+#include <assert.h>
+#define luai_apicheck(l,e)	assert(e)
+#endif
+
+/* }================================================================== */
+
+
+/*
+** {==================================================================
+** Macros that affect the API and must be stable (that is, must be the
+** same when you compile Lua and when you compile code that links to
+** Lua). You probably do not want/need to change them.
+** =====================================================================
+*/
+
+/*
+@@ LUAI_MAXSTACK limits the size of the Lua stack.
+** CHANGE it if you need a different limit. This limit is arbitrary;
+** its only purpose is to stop Lua from consuming unlimited stack
+** space (and to reserve some numbers for pseudo-indices).
+*/
+#if LUAI_BITSINT >= 32
+#define LUAI_MAXSTACK		1000000
+#else
+#define LUAI_MAXSTACK		15000
+#endif
+
+
+/*
+@@ LUA_EXTRASPACE defines the size of a raw memory area associated with
+** a Lua state with very fast access.
+** CHANGE it if you need a different size.
+*/
+#define LUA_EXTRASPACE		(sizeof(void *))
+
+
+/*
+@@ LUA_IDSIZE gives the maximum size for the description of the source
+@@ of a function in debug information.
+** CHANGE it if you want a different size.
+*/
+#define LUA_IDSIZE	60
+
+
+/*
+@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
+** CHANGE it if it uses too much C-stack space. (For long double,
+** 'string.format("%.99f", 1e4932)' needs ~5030 bytes, so a
+** smaller buffer would force a memory allocation for each call to
+** 'string.format'.)
+*/
+#if defined(LUA_FLOAT_LONGDOUBLE)
+#define LUAL_BUFFERSIZE		8192
+#else
+#define LUAL_BUFFERSIZE   ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
+#endif
+
+/* }================================================================== */
+
+
+/*
+@@ LUA_QL describes how error messages quote program elements.
+** Lua does not use these macros anymore; they are here for
+** compatibility only.
+*/
+#define LUA_QL(x)	"'" x "'"
+#define LUA_QS		LUA_QL("%s")
+
+
 
 
 /* =================================================================== */

lundump.c

@@ -1,14 +1,17 @@
 /*
-** $Id: lundump.c,v 2.39 2014/06/18 18:35:43 roberto Exp roberto $
+** $Id: lundump.c,v 2.40 2014/06/19 18:27:20 roberto Exp roberto $
 ** load precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
 
-#include <string.h>
-
 #define lundump_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <string.h>
+
 #include "lua.h"
 
 #include "ldebug.h"

lutf8lib.c

@@ -1,17 +1,20 @@
 /*
-** $Id: lutf8lib.c,v 1.11 2014/10/01 11:52:33 roberto Exp roberto $
+** $Id: lutf8lib.c,v 1.14 2015/03/05 16:07:46 roberto Exp roberto $
 ** Standard library for UTF-8 manipulation
 ** See Copyright Notice in lua.h
 */
 
-
-#include <assert.h>
-#include <stdlib.h>
-#include <string.h>
-
 #define lutf8lib_c
 #define LUA_LIB
 
+#include "lprefix.h"
+
+
+#include <assert.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+
 #include "lua.h"
 
 #include "lauxlib.h"
@@ -35,7 +38,7 @@ static lua_Integer u_posrelat (lua_Integer pos, size_t len) {
 ** Decode one UTF-8 sequence, returning NULL if byte sequence is invalid.
 */
 static const char *utf8_decode (const char *o, int *val) {
-  static unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF};
+  static const unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF};
   const unsigned char *s = (const unsigned char *)o;
   unsigned int c = s[0];
   unsigned int res = 0;  /* final result */
@@ -104,9 +107,9 @@ static int codepoint (lua_State *L) {
   luaL_argcheck(L, posi >= 1, 2, "out of range");
   luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of range");
   if (posi > pose) return 0;  /* empty interval; return no values */
-  n = (int)(pose -  posi + 1);
+  if (pose - posi >= INT_MAX)  /* (lua_Integer -> int) overflow? */
-  if (posi + n <= pose)  /* (lua_Integer -> int) overflow? */
     return luaL_error(L, "string slice too long");
+  n = (int)(pose -  posi) + 1;
   luaL_checkstack(L, n, "string slice too long");
   n = 0;
   se = s + pose;
@@ -232,7 +235,7 @@ static int iter_codes (lua_State *L) {
 #define UTF8PATT	"[\0-\x7F\xC2-\xF4][\x80-\xBF]*"
 
 
-static struct luaL_Reg funcs[] = {
+static const luaL_Reg funcs[] = {
   {"offset", byteoffset},
   {"codepoint", codepoint},
   {"char", utfchar},
@@ -246,7 +249,7 @@ static struct luaL_Reg funcs[] = {
 
 LUAMOD_API int luaopen_utf8 (lua_State *L) {
   luaL_newlib(L, funcs);
-  lua_pushliteral(L, UTF8PATT);
+  lua_pushlstring(L, UTF8PATT, sizeof(UTF8PATT)/sizeof(char) - 1);
   lua_setfield(L, -2, "charpattern");
   return 1;
 }

lvm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.h,v 2.33 2014/07/30 14:42:44 roberto Exp roberto $
+** $Id: lvm.h,v 2.34 2014/08/01 17:24:02 roberto Exp roberto $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -27,11 +27,21 @@
 #endif
 
 
+/*
+** You can define LUA_FLOORN2I if you want to convert floats to integers
+** by flooring them (instead of raising an error if they are not
+** integral values)
+*/
+#if !defined(LUA_FLOORN2I)
+#define LUA_FLOORN2I		0
+#endif
+
+
 #define tonumber(o,n) \
 	(ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n))
 
 #define tointeger(o,i) \
-	(ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger_(o,i))
+    (ttisinteger(o) ? (*(i) = ivalue(o), 1) : luaV_tointeger(o,i,LUA_FLOORN2I))
 
 #define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2))
 
@@ -42,7 +52,7 @@ LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
 LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
 LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
 LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
-LUAI_FUNC int luaV_tointeger_ (const TValue *obj, lua_Integer *p);
+LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, int mode);
 LUAI_FUNC void luaV_gettable (lua_State *L, const TValue *t, TValue *key,
                                             StkId val);
 LUAI_FUNC void luaV_settable (lua_State *L, const TValue *t, TValue *key,

lzio.c

@@ -1,15 +1,17 @@
 /*
-** $Id: lzio.c,v 1.34 2011/07/15 12:35:32 roberto Exp roberto $
+** $Id: lzio.c,v 1.35 2012/05/14 13:34:18 roberto Exp roberto $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */
 
-
-#include <string.h>
-
 #define lzio_c
 #define LUA_CORE
 
+#include "lprefix.h"
+
+
+#include <string.h>
+
 #include "lua.h"
 
 #include "llimits.h"

lzio.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lzio.h,v 1.27 2013/06/07 14:51:10 roberto Exp roberto $
+** $Id: lzio.h,v 1.29 2014/12/19 13:45:40 roberto Exp roberto $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */
@@ -37,7 +37,8 @@ typedef struct Mbuffer {
 
 
 #define luaZ_resizebuffer(L, buff, size) \
-	(luaM_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \
+	((buff)->buffer = luaM_reallocvchar(L, (buff)->buffer, \
+				(buff)->buffsize, size), \
 	(buff)->buffsize = size)
 
 #define luaZ_freebuffer(L, buff)	luaZ_resizebuffer(L, buff, 0)

makefile

@@ -5,19 +5,19 @@
 # == CHANGE THE SETTINGS BELOW TO SUIT YOUR ENVIRONMENT =======================
 
 # Warnings valid for both C and C++
-CWARNSCPP=-pedantic -Wno-long-long \
+CWARNSCPP= \
-	-Wall -Wextra \
+	-pedantic \
+	-Wextra \
 	-Waggregate-return \
-	-Wcast-align \
-        -Wdisabled-optimization \
 	-Wshadow \
-        -Wsign-compare \
+	-Wsign-compare \
 	-Wundef \
 	-Wwrite-strings \
 	-Wredundant-decls \
 	-Wdisabled-optimization \
 	-Wstrict-aliasing \
-        # the next warnings generate to much noise, so they are disabled
+	# the next warnings generate to much noise, so they are disabled
+	# -Wconversion  -Wno-sign-conversion \
 	# -Wsign-conversion \
 	# -Wconversion \
 	# -Wlogical-op \
@@ -27,21 +27,21 @@ CWARNSCPP=-pedantic -Wno-long-long \
 
 # The next warnings are neither valid nor needed for C++
 CWARNSC= -Wdeclaration-after-statement \
-        -Wmissing-prototypes \
+	-Wmissing-prototypes \
-        -Wnested-externs \
+	-Wnested-externs \
 	-Wstrict-prototypes \
 	-Wc++-compat \
-	-Wold-style-declaration \
 	-Wold-style-definition \
+	-Wold-style-declaration \
 
 CWARNS= $(CWARNSCPP) $(CWARNSC)
 
 
-# -DEXTERNMEMCHECK -DHARDSTACKTESTS -DHARDMEMTESTS  -DTRACEMEM='"tempmem"'
+# -DEXTERNMEMCHECK -DHARDSTACKTESTS -DHARDMEMTESTS -DTRACEMEM='"tempmem"'
 # -g -DLUA_USER_H='"ltests.h"'
 # -fomit-frame-pointer #-pg -malign-double
-# -DLUA_USE_CTYPE  -DLUA_USE_APICHECK
+# -DLUA_USE_CTYPE -DLUA_USE_APICHECK
-TESTS= -DLUA_USER_H='"ltests.h"'
+# TESTS= -DLUA_USER_H='"ltests.h"'
 
 # -mtune=native -fomit-frame-pointer
 LOCAL = $(TESTS) $(CWARNS) -g
@@ -49,7 +49,7 @@ LOCAL = $(TESTS) $(CWARNS) -g
 
 
 # enable Linux goodies
-MYCFLAGS= $(LOCAL) -DLUA_USE_LINUX -DLUA_COMPAT_5_2
+MYCFLAGS= $(LOCAL) -std=c99 -DLUA_USE_LINUX -DLUA_COMPAT_5_2
 MYLDFLAGS= $(LOCAL) -Wl,-E
 MYLIBS= -ldl -lreadline -lhistory -lncurses
 
@@ -126,66 +126,71 @@ $(ALL_O): makefile
 # DO NOT EDIT
 # automatically made with 'gcc -MM l*.c'
 
-lapi.o: lapi.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h ltm.h \
+lapi.o: lapi.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
- lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lstring.h ltable.h lundump.h \
+ lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lstring.h \
+ ltable.h lundump.h lvm.h
+lauxlib.o: lauxlib.c lprefix.h lua.h luaconf.h lauxlib.h
+lbaselib.o: lbaselib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
+lbitlib.o: lbitlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
+lcode.o: lcode.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \
+ llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \
+ ldo.h lgc.h lstring.h ltable.h lvm.h
+lcorolib.o: lcorolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
+lctype.o: lctype.c lprefix.h lctype.h lua.h luaconf.h llimits.h
+ldblib.o: ldblib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
+ldebug.o: ldebug.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
+ lobject.h ltm.h lzio.h lmem.h lcode.h llex.h lopcodes.h lparser.h \
+ ldebug.h ldo.h lfunc.h lstring.h lgc.h ltable.h lvm.h
+ldo.o: ldo.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
+ lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lopcodes.h \
+ lparser.h lstring.h ltable.h lundump.h lvm.h
+ldump.o: ldump.c lprefix.h lua.h luaconf.h lobject.h llimits.h lstate.h \
+ ltm.h lzio.h lmem.h lundump.h
+lfunc.o: lfunc.c lprefix.h lua.h luaconf.h lfunc.h lobject.h llimits.h \
+ lgc.h lstate.h ltm.h lzio.h lmem.h
+lgc.o: lgc.c lprefix.h lua.h luaconf.h ldebug.h llimits.h lstate.h \
+ lobject.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h
+linit.o: linit.c lprefix.h lua.h luaconf.h lualib.h lauxlib.h
+liolib.o: liolib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
+llex.o: llex.c lprefix.h lua.h luaconf.h lctype.h llimits.h ldebug.h \
+ lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lgc.h llex.h lparser.h \
+ lstring.h ltable.h
+lmathlib.o: lmathlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
+lmem.o: lmem.c lprefix.h lua.h luaconf.h ldebug.h llimits.h lstate.h \
+ lobject.h ltm.h lzio.h lmem.h ldo.h lgc.h
+loadlib.o: loadlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
+lobject.o: lobject.c lprefix.h lua.h luaconf.h lctype.h llimits.h \
+ ldebug.h lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h \
  lvm.h
-lauxlib.o: lauxlib.c lua.h luaconf.h lauxlib.h
+lopcodes.o: lopcodes.c lprefix.h lopcodes.h llimits.h lua.h luaconf.h
-lbaselib.o: lbaselib.c lua.h luaconf.h lauxlib.h lualib.h
+loslib.o: loslib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lbitlib.o: lbitlib.c lua.h luaconf.h lauxlib.h lualib.h
+lparser.o: lparser.c lprefix.h lua.h luaconf.h lcode.h llex.h lobject.h \
-lcode.o: lcode.c lua.h luaconf.h lcode.h llex.h lobject.h llimits.h \
+ llimits.h lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h \
- lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h ldo.h lgc.h \
+ ldo.h lfunc.h lstring.h lgc.h ltable.h
- lstring.h ltable.h lvm.h
+lstate.o: lstate.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
-lcorolib.o: lcorolib.c lua.h luaconf.h lauxlib.h lualib.h
+ lobject.h ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h llex.h \
-lctype.o: lctype.c lctype.h lua.h luaconf.h llimits.h
+ lstring.h ltable.h
-ldblib.o: ldblib.c lua.h luaconf.h lauxlib.h lualib.h
+lstring.o: lstring.c lprefix.h lua.h luaconf.h ldebug.h llimits.h \
-ldebug.o: ldebug.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h \
+ lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h
- ltm.h lzio.h lmem.h lcode.h llex.h lopcodes.h lparser.h ldebug.h ldo.h \
+lstrlib.o: lstrlib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
- lfunc.h lstring.h lgc.h ltable.h lvm.h
+ltable.o: ltable.c lprefix.h lua.h luaconf.h ldebug.h llimits.h lstate.h \
-ldo.o: ldo.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h ltm.h \
+ lobject.h ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
- lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h lopcodes.h lparser.h \
+ltablib.o: ltablib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
- lstring.h ltable.h lundump.h lvm.h
+ltests.o: ltests.c lprefix.h lua.h luaconf.h lapi.h llimits.h lstate.h \
-ldump.o: ldump.c lua.h luaconf.h lobject.h llimits.h lstate.h ltm.h \
+ lobject.h ltm.h lzio.h lmem.h lauxlib.h lcode.h llex.h lopcodes.h \
- lzio.h lmem.h lundump.h
+ lparser.h lctype.h ldebug.h ldo.h lfunc.h lstring.h lgc.h ltable.h \
-lfunc.o: lfunc.c lua.h luaconf.h lfunc.h lobject.h llimits.h lgc.h \
+ lualib.h
- lstate.h ltm.h lzio.h lmem.h
+ltm.o: ltm.c lprefix.h lua.h luaconf.h ldebug.h llimits.h lstate.h \
-lgc.o: lgc.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
+ lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h ltable.h lvm.h
- lzio.h lmem.h ldo.h lfunc.h lgc.h lstring.h ltable.h
+lua.o: lua.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-linit.o: linit.c lua.h luaconf.h lualib.h lauxlib.h
+lundump.o: lundump.c lprefix.h lua.h luaconf.h ldebug.h llimits.h \
-liolib.o: liolib.c lua.h luaconf.h lauxlib.h lualib.h
+ lstate.h lobject.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h \
-llex.o: llex.c lua.h luaconf.h lctype.h llimits.h ldo.h lobject.h \
+ lundump.h
- lstate.h ltm.h lzio.h lmem.h lgc.h llex.h lparser.h lstring.h ltable.h
+lutf8lib.o: lutf8lib.c lprefix.h lua.h luaconf.h lauxlib.h lualib.h
-lmathlib.o: lmathlib.c lua.h luaconf.h lauxlib.h lualib.h
+lvm.o: lvm.c lprefix.h lua.h luaconf.h ldebug.h llimits.h lstate.h \
-lmem.o: lmem.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
+ lobject.h ltm.h lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h \
- ltm.h lzio.h lmem.h ldo.h lgc.h
+ ltable.h lvm.h
-loadlib.o: loadlib.c lua.h luaconf.h lauxlib.h lualib.h
+lzio.o: lzio.c lprefix.h lua.h luaconf.h llimits.h lmem.h lstate.h \
-lobject.o: lobject.c lua.h luaconf.h lctype.h llimits.h ldebug.h lstate.h \
+ lobject.h ltm.h lzio.h
- lobject.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h lvm.h
-lopcodes.o: lopcodes.c lopcodes.h llimits.h lua.h luaconf.h
-loslib.o: loslib.c lua.h luaconf.h lauxlib.h lualib.h
-lparser.o: lparser.c lua.h luaconf.h lcode.h llex.h lobject.h llimits.h \
- lzio.h lmem.h lopcodes.h lparser.h ldebug.h lstate.h ltm.h ldo.h lfunc.h \
- lstring.h lgc.h ltable.h
-lstate.o: lstate.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h \
- ltm.h lzio.h lmem.h ldebug.h ldo.h lfunc.h lgc.h llex.h lstring.h \
- ltable.h
-lstring.o: lstring.c lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lstring.h lgc.h
-lstrlib.o: lstrlib.c lua.h luaconf.h lauxlib.h lualib.h
-ltable.o: ltable.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h \
- ltm.h lzio.h lmem.h ldo.h lgc.h lstring.h ltable.h lvm.h
-ltablib.o: ltablib.c lua.h luaconf.h lauxlib.h lualib.h
-ltests.o: ltests.c lua.h luaconf.h lapi.h llimits.h lstate.h lobject.h \
- ltm.h lzio.h lmem.h lauxlib.h lcode.h llex.h lopcodes.h lparser.h \
- lctype.h ldebug.h ldo.h lfunc.h lstring.h lgc.h ltable.h lualib.h
-ltm.o: ltm.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
- lzio.h lmem.h ldo.h lstring.h lgc.h ltable.h lvm.h
-lua.o: lua.c lua.h luaconf.h lauxlib.h lualib.h
-lundump.o: lundump.c lua.h luaconf.h ldebug.h lstate.h lobject.h \
- llimits.h ltm.h lzio.h lmem.h ldo.h lfunc.h lstring.h lgc.h lundump.h
-lutf8lib.o: lutf8lib.c lua.h luaconf.h lauxlib.h lualib.h
-lvm.o: lvm.c lua.h luaconf.h ldebug.h lstate.h lobject.h llimits.h ltm.h \
- lzio.h lmem.h ldo.h lfunc.h lgc.h lopcodes.h lstring.h ltable.h lvm.h
-lzio.o: lzio.c lua.h luaconf.h llimits.h lmem.h lstate.h lobject.h ltm.h \
- lzio.h
 
 # (end of Makefile)