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@kosaki kosaki/gist:5514541
Last active Dec 16, 2015

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__fortify_function wchar_t *
__NTH (wcpcpy (wchar_t *__restrict __dest, const wchar_t *__restrict __src))
{
if (__bos (__dest) != (size_t) -1)
return __wcpcpy_chk (__dest, __src, __bos (__dest) / sizeof (wchar_t));
return __wcpcpy_alias (__dest, __src);
}
/* Copy SRC to DEST, returning the address of the terminating L'\0' in
DEST. Check for overflows. */
wchar_t *
__wcpcpy_chk (wchar_t *dest, const wchar_t *src, size_t destlen)
{
wchar_t *wcp = (wchar_t *) dest - 1;
wint_t c;
const ptrdiff_t off = src - dest + 1;
do
{
if (__builtin_expect (destlen-- == 0, 0))
__chk_fail ();
c = wcp[off];
*++wcp = c;
}
while (c != L'\0');
return wcp;
}
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