1 files changed, 12 insertions, 1 deletions
diff --git a/mdk-stage1/dietlibc/lib/strncmp.c b/mdk-stage1/dietlibc/lib/strncmp.c
index 7c08c0fa7..b3b56cfbb 100644
--- a/mdk-stage1/dietlibc/lib/strncmp.c
+++ b/mdk-stage1/dietlibc/lib/strncmp.c
@@ -1,6 +1,17 @@
 #include <sys/types.h>
 #include <string.h>
 
+/* gcc is broken and has a non-SUSv2 compliant internal prototype.
+ * This causes it to warn about a type mismatch here.  Ignore it. */
 int strncmp(const char *s1, const char *s2, size_t n) {
-  return memccmp(s1,s2,0,n);
+  register const char* a=s1;
+  register const char* b=s2;
+  register const char* fini=a+n;
+  while (a<fini) {
+    register int res=*a-*b;
+    if (res) return res;
+    if (!*a) return 0;
+    ++a; ++b;
+  }
+  return 0;
 }