From 82c41e92320c3f84bd6d24e21c5350a06e2fc831 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 23 Sep 2018 02:48:25 -0400
Subject: [PATCH] fix undefined pointer comparison in wmemmove

---
 src/string/wmemmove.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/string/wmemmove.c b/src/string/wmemmove.c
index e406f3d5..d58cebac 100644
--- a/src/string/wmemmove.c
+++ b/src/string/wmemmove.c
@@ -1,9 +1,10 @@
 #include <wchar.h>
+#include <stdint.h>
 
 wchar_t *wmemmove(wchar_t *d, const wchar_t *s, size_t n)
 {
 	wchar_t *d0 = d;
-	if ((size_t)(d-s) < n)
+	if ((uintptr_t)d-(uintptr_t)s < n * sizeof *d)
 		while (n--) d[n] = s[n];
 	else
 		while (n--) *d++ = *s++;
-- 
2.25.1