From ce36c16dc8f476249a9825079f96efabe03b0cf5 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed, 16 Aug 2006 17:22:49 +0000
Subject: [PATCH] (memcoll): Set errno = 0 in the shortcut case, too.

---
 lib/ChangeLog | 6 ++++++
 lib/memcoll.c | 5 ++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/ChangeLog b/lib/ChangeLog
index 0dcf3d23ff..d90fa93614 100644
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,3 +1,9 @@
+2006-08-16  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* memcoll.c (memcoll): Set errno = 0 in the shortcut case, too.
+	Problem and fix reported by Pádraig Brady in
+	<http://lists.gnu.org/archive/html/bug-coreutils/2006-08/msg00099.html>.
+
 2006-08-15  Paul Eggert  <eggert@cs.ucla.edu>
 
 	* memcoll.c (memcoll): Optimize for the common case where the
diff --git a/lib/memcoll.c b/lib/memcoll.c
index 7f61a6b58c..457d1104a9 100644
--- a/lib/memcoll.c
+++ b/lib/memcoll.c
@@ -43,7 +43,10 @@ memcoll (char *s1, size_t s1len, char *s2, size_t s2len)
      the buffers using strcoll on each substring.  */
 
   if (s1len == s2len && memcmp (s1, s2, s1len) == 0)
-    diff = 0;
+    {
+      errno = 0;
+      diff = 0;
+    }
   else
     {
       char n1 = s1[s1len];
-- 
2.30.2