Add wmemset() check

1 files changed, 13 insertions, 0 deletions

diff --git a/include/wchar.h b/include/wchar.h
index fe2bcfc..54df2be 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -16,8 +16,21 @@ __fortify_fgetws(wchar_t *s, int n, FILE *fp)
         return fgetws(s, n, fp);
 }
 
+static inline __attribute__ ((always_inline))
+wchar_t *
+__fortify_wmemset(wchar_t *s, wchar_t c, size_t n)
+{
+        size_t bos = __builtin_object_size(s, 0);
+
+        if (n > bos / sizeof(wchar_t))
+                __builtin_trap();
+        return wmemset(s, c, n);
+}
+
 #undef fgetws
 #define fgetws(s, n, fp) __fortify_fgetws(s, n, fp)
+#undef wmemset
+#define wmemset(s, c, n) __fortify_wmemset(s, c, n)
 
 #endif