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-rw-r--r--benchtests/bench-rawmemchr.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/benchtests/bench-rawmemchr.c b/benchtests/bench-rawmemchr.c
index f6398f86d9..088c516e59 100644
--- a/benchtests/bench-rawmemchr.c
+++ b/benchtests/bench-rawmemchr.c
@@ -30,7 +30,7 @@ typedef char *(*proto_t) (const char *, int);
 char *
 generic_rawmemchr (const char *s, int c)
 {
-  if (c != 0)
+  if ((unsigned char) c != 0)
     return memchr (s, c, PTRDIFF_MAX);
   return (char *)s + strlen (s);
 }