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fix memccpy to not access buffer past given size

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memccpy would return a pointer over the given size when c is not
found in the source buffer and n reaches 0.
This commit is contained in:
Quentin Rameau 2018-11-11 09:25:26 +01:00 • committed by Rich Felker
parent 39ef612aa1
commit d9bdfd1644
1 changed files with 1 additions and 1 deletions
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2
src/string/memccpy.c
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@ -29,6 +29,6 @@ void *memccpy(void *restrict dest, const void *restrict src, int c, size_t n)
#endif #endif
for (; n && (*d=*s)!=c; n--, s++, d++); for (; n && (*d=*s)!=c; n--, s++, d++);
tail: tail:
if (*s==c) return d+1; if (n && *s==c) return d+1;
return 0; return 0;
} }