1 files changed, 4 insertions, 2 deletions

diff --git a/include/string.h b/include/string.h
index 86c258d..6771b1d 100644
--- a/include/string.h
+++ b/include/string.h
@@ -10,11 +10,13 @@ void *
 __fortify_memcpy(void *dest, const void *src, size_t n)
 {
         size_t bos = __builtin_object_size(dest, 0);
+        char *d = dest;
+        const char *s = src;
 
         /* trap if pointers are overlapping but not if dest == src.
          * gcc seems to like to generate code that relies on dest == src */
-        if ((dest < src && dest + n > src) ||
-            (src < dest && src + n > dest))
+        if ((d < s && d + n > s) ||
+            (s < d && s + n > d))
                 __builtin_trap();
         if (n > bos)
                 __builtin_trap();