From 0ab2f59fe822b62620018a4fc4c57d0e4b7b4396 Mon Sep 17 00:00:00 2001
From: "Justin C. Miller" <justin@justin.cm>
Date: Sun, 28 Apr 2024 19:35:12 -0700
Subject: [PATCH] [libc] Fix a strncmp bug

The strncmp implementation too eagerly advanced the string pointers,
such that it would compare the next characters after the ones that
didn't match.
---
 src/libraries/libc/string/strncmp.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libraries/libc/string/strncmp.cpp b/src/libraries/libc/string/strncmp.cpp
index 10ddb70..67382cd 100644
--- a/src/libraries/libc/string/strncmp.cpp
+++ b/src/libraries/libc/string/strncmp.cpp
@@ -16,7 +16,9 @@ int strncmp(const char *s1, const char *s2, size_t n) {
     char const * c1 = s1;
     char const * c2 = s2;
 
-    while (n && *c1 && *c2 && *c1++ == *c2++) n--;
+    while (n && *c1 && *c2 && *c1 == *c2) {
+        n--; c1++; c2++;
+    }
 
     if (!n || *c1 == *c2) return 0;
     if (!*c2 || *c1 > *c2) return 1;