From f0efb87f8f5a0cc64b386ed6be4f9c2db328c37b Mon Sep 17 00:00:00 2001
From: sin <sin@2f30.org>
Date: Tue, 3 Mar 2015 18:16:29 +0000
Subject: [PATCH] Add wmemcpy() and wmemmove() checks

---
 include/wchar.h | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/include/wchar.h b/include/wchar.h
index 54df2be..9360eb5 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -16,6 +16,28 @@ __fortify_fgetws(wchar_t *s, int n, FILE *fp)
 	return fgetws(s, n, fp);
 }
 
+static inline __attribute__ ((always_inline))
+wchar_t *
+__fortify_wmemcpy(wchar_t *d, const wchar_t *s, size_t n)
+{
+	size_t bos = __builtin_object_size(d, 0);
+
+	if (n > bos / sizeof(wchar_t))
+		__builtin_trap();
+	return wmemcpy(d, s, n);
+}
+
+static inline __attribute__ ((always_inline))
+wchar_t *
+__fortify_wmemmove(wchar_t *d, const wchar_t *s, size_t n)
+{
+	size_t bos = __builtin_object_size(d, 0);
+
+	if (n > bos / sizeof(wchar_t))
+		__builtin_trap();
+	return wmemmove(d, s, n);
+}
+
 static inline __attribute__ ((always_inline))
 wchar_t *
 __fortify_wmemset(wchar_t *s, wchar_t c, size_t n)
@@ -29,6 +51,10 @@ __fortify_wmemset(wchar_t *s, wchar_t c, size_t n)
 
 #undef fgetws
 #define fgetws(s, n, fp) __fortify_fgetws(s, n, fp)
+#undef wmemcpy
+#define wmemcpy(d, s, n) __fortify_wmemcpy(d, s, n)
+#undef wmemmove
+#define wmemmove(d, s, n) __fortify_wmemmove(d, s, n)
 #undef wmemset
 #define wmemset(s, c, n) __fortify_wmemset(s, c, n)