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Avoid reading pass the end of the source buffer when it is not NUL

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terminated.

If this buffer is adjacent to an unmapped page or a version of C with
bounds checked is used this may result in a crash.

PR:		206177
Submitted by:	Alexander Cherepanov <cherepan@mccme.ru>
MFC after:	1 week
This commit is contained in:
Brooks Davis 2016-01-13 21:49:01 +00:00
parent e12a9f251e
commit cd3dbc2573
1 changed files with 1 additions and 1 deletions
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2
lib/libc/string/wcsncat.c
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@ -48,7 +48,7 @@ wcsncat(wchar_t * __restrict s1, const wchar_t * __restrict s2, size_t n)
p++;
q = p;
r = s2;
while (*r && n) {
while (n && *r) {
*q++ = *r++;
n--;
}