From 1b2e96f8302bb0eb80c30ec27ab13d4d0f1a7912 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Sat, 13 Nov 2004 01:02:48 +0000
Subject: [PATCH] Make the newly-introduced critical section a bit smaller.

---
 src/sort.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/sort.c b/src/sort.c
index 7c541d796..3b6cfb09b 100644
--- a/src/sort.c
+++ b/src/sort.c
@@ -528,11 +528,13 @@ zaptemp (const char *name)
     if (node->name == name)
       {
 	/* Unlink the temporary file in a critical section, to avoid races.  */
+	struct tempnode *t = node->next;
 	sigprocmask (SIG_BLOCK, &caught_signals, &oldset);
 	unlink (name);
-	if (! (*pnode = node->next))
-	  temptail = pnode;
+	*pnode = t;
 	sigprocmask (SIG_SETMASK, &oldset, NULL);
+	if (! t)
+	  temptail = pnode;
 	free (node);
 	break;
       }
-- 
2.34.1