Implement getCallStackFast/Exact for fast call-stack backtrace.

src/bx.cpp

@@ -42,7 +42,7 @@ namespace bx
 		total += write(&smb, "\n\n", &err);
 
 		uintptr_t stack[32];
-		const uint32_t num = getCallStack(2 /* skip self */ + _skip, BX_COUNTOF(stack), stack);
+		const uint32_t num = getCallStackExact(2 /* skip self */ + _skip, BX_COUNTOF(stack), stack);
 		total += writeCallstack(&smb, stack, num, &err);
 
 		total += write(&smb, &err,

src/filepath.cpp

@@ -303,6 +303,12 @@ namespace bx
 		set(_filePath);
 	}
 
+	FilePath& FilePath::operator=(const char* _rhs)
+	{
+		set(_rhs);
+		return *this;
+	}
+
 	FilePath& FilePath::operator=(const StringView& _rhs)
 	{
 		set(_rhs);