From a810ecae686ae9133862a7ed4deabebc93d47b10 Mon Sep 17 00:00:00 2001
From: sin
Date: Tue, 3 Mar 2015 18:13:14 +0000
Subject: Add wmemset() check

---
 include/wchar.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'include/wchar.h')

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
 
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