Mercurial > gnulib
comparison lib/unistr/u-cpy-alloc.h @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Sat, 09 Mar 2019 00:01:47 +0100 |
| parents | b06060465f09 |
| children |
comparison
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| 40211:5f58d2ac35ea | 40212:8da9577294da |
|---|---|
| 31 UNIT *destptr = dest; | 31 UNIT *destptr = dest; |
| 32 | 32 |
| 33 for (; n > 0; n--) | 33 for (; n > 0; n--) |
| 34 *destptr++ = *s++; | 34 *destptr++ = *s++; |
| 35 #else | 35 #else |
| 36 memcpy ((char *) dest, (const char *) s, n * sizeof (UNIT)); | 36 if (n > 0) |
| 37 memcpy ((char *) dest, (const char *) s, n * sizeof (UNIT)); | |
| 37 #endif | 38 #endif |
| 38 } | 39 } |
| 39 return dest; | 40 return dest; |
| 40 } | 41 } |