From: Rich Felker <dalias@aerifal.cx>
Date: Mon, 24 Apr 2023 15:21:13 +0000 (-0400)
Subject: fix return value of wmemcmp for extreme wchar_t values
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;ds=sidebyside;h=b928c7234f62c35a9b4927586ff4c3cbf6e513b5;hp=4724793f96b163e95cb15e1b7374ff2b0434ed15;p=musl

fix return value of wmemcmp for extreme wchar_t values

analogous to the bug in wcscmp and wcsncmp that was fixed in commit
07616721f1fa6cb215ffbef23441cae80412484f.
---

diff --git a/src/string/wmemcmp.c b/src/string/wmemcmp.c
index 2a193263..717d77b1 100644
--- a/src/string/wmemcmp.c
+++ b/src/string/wmemcmp.c
@@ -3,5 +3,5 @@
 int wmemcmp(const wchar_t *l, const wchar_t *r, size_t n)
 {
 	for (; n && *l==*r; n--, l++, r++);
-	return n ? *l-*r : 0;
+	return n ? (*l < *r ? -1 : *l > *r) : 0;
 }