The src pointer is const and points to a different object, so accessing
dest via src is invalid.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
__wcscpy_chk (wchar_t *dest, const wchar_t *src, size_t n)
{
wint_t c;
- wchar_t *wcp;
+ wchar_t *wcp = dest;
- if (__alignof__ (wchar_t) >= sizeof (wchar_t))
+ do
{
- const ptrdiff_t off = dest - src - 1;
-
- wcp = (wchar_t *) src;
-
- do
- {
- if (__glibc_unlikely (n-- == 0))
- __chk_fail ();
- c = *wcp++;
- wcp[off] = c;
- }
- while (c != L'\0');
- }
- else
- {
- wcp = dest;
-
- do
- {
- if (__glibc_unlikely (n-- == 0))
- __chk_fail ();
- c = *src++;
- *wcp++ = c;
- }
- while (c != L'\0');
+ if (__glibc_unlikely (n-- == 0))
+ __chk_fail ();
+ c = *src++;
+ *wcp++ = c;
}
+ while (c != L'\0');
return dest;
}