From 8cd738bbee3b4e60a99b71599c338bf444070f18 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 23 Sep 2018 02:51:01 -0400
Subject: [PATCH] optimize nop case of wmemmove

---
 src/string/wmemmove.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/string/wmemmove.c b/src/string/wmemmove.c
index d58cebac..964c9032 100644
--- a/src/string/wmemmove.c
+++ b/src/string/wmemmove.c
@@ -4,6 +4,7 @@
 wchar_t *wmemmove(wchar_t *d, const wchar_t *s, size_t n)
 {
 	wchar_t *d0 = d;
+	if (d == s) return d;
 	if ((uintptr_t)d-(uintptr_t)s < n * sizeof *d)
 		while (n--) d[n] = s[n];
 	else
-- 
2.25.1