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Fix mbsrtowcs() check

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sin 2015-03-04 18:26:59 +00:00
parent 7392bcaef8
commit 4ddbe16d88
1 changed files with 5 additions and 2 deletions
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7
include/wchar.h
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@ -41,10 +41,13 @@ __fortify_mbsrtowcs(wchar_t *d, const char **s,
size_t wn, mbstate_t *st) size_t wn, mbstate_t *st)
{ {
size_t bos = __builtin_object_size(d, 0); size_t bos = __builtin_object_size(d, 0);
size_t r;
if (wn > bos / sizeof(wchar_t)) bos /= sizeof(wchar_t);
r = mbsrtowcs(d, s, wn > bos ? bos : wn, st);
if (bos < wn && d && *s && r != (size_t)-1)
__builtin_trap(); __builtin_trap();
return mbsrtowcs(d, s, wn, st); return r;
} }
static inline __attribute__ ((always_inline)) static inline __attribute__ ((always_inline))