From 9c28a3f49d40e3525b4116837789e8b803fc1f8d Mon Sep 17 00:00:00 2001
From: pfg <pfg@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Tue, 1 Aug 2017 01:25:18 +0000
Subject: [PATCH] MFC r320990, r321011:

libthr: Avoid checking for negative values in usigned count.

Check for overflow instead.


git-svn-id: svn://svn.freebsd.org/base/stable/10@321833 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 lib/libthr/thread/thr_barrier.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/libthr/thread/thr_barrier.c b/lib/libthr/thread/thr_barrier.c
index 10b634608..e39fbb319 100644
--- a/lib/libthr/thread/thr_barrier.c
+++ b/lib/libthr/thread/thr_barrier.c
@@ -83,7 +83,7 @@ _pthread_barrier_init(pthread_barrier_t *barrier,
 
 	(void)attr;
 
-	if (barrier == NULL || count <= 0)
+	if (barrier == NULL || count == 0 || count > INT_MAX)
 		return (EINVAL);
 
 	bar = calloc(1, sizeof(struct pthread_barrier));
-- 
2.42.0