1 files changed, 2 insertions, 2 deletions
diff --git a/posix/tst-mmap.c b/posix/tst-mmap.c
index 7a57366903..e4db364301 100644
--- a/posix/tst-mmap.c
+++ b/posix/tst-mmap.c
@@ -11,10 +11,10 @@ main (void)
 {
   int result = 0;
   FILE *fp;
-  int c;
+  size_t c;
   char buf[1000];
   int fd;
-  char *ptr;
+  unsigned char *ptr;
   size_t ps = sysconf (_SC_PAGESIZE);
   void *mem;