Do not scan source length over the destination size.

2026-11-11 02:15:26 +00:00 · 2026-08-01 00:59:29 +02:00
parent 3448832b72
commit 144fec96d3
1 changed files with 3 additions and 2 deletions
@@ -12,9 +12,10 @@ static inline size_t strzcpy( char* __restrict dst, const char* __restrict src,
 {
    assert( dstSize > 0 );

-    const auto srcSz = strlen( src );
-    if( srcSz < dstSize )
+    const auto end = (const char*)memchr( src, '\0', dstSize );
+    if( end != nullptr )
    {
+        const auto srcSz = end - src;
        memcpy( dst, src, srcSz + 1 );
        return srcSz;
    }