From 3f1c2f89f6b8b8d23a9072f8549b0a2c1de06b03 Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Tue, 16 Aug 2022 08:22:29 +0200
Subject: [PATCH] jobserver: fix fifo mode by opening pipe in proper mode

The current jobserver_info relies on non-blocking FDs,
thus one the pipe in such mode.

gcc/ChangeLog:

	* opts-common.cc (jobserver_info::connect): Open fifo
	in non-blocking mode.
---
 gcc/opts-common.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gcc/opts-common.cc b/gcc/opts-common.cc
index 5d79f174a38..4dec9f94447 100644
--- a/gcc/opts-common.cc
+++ b/gcc/opts-common.cc
@@ -2064,7 +2064,7 @@ void
 jobserver_info::connect ()
 {
   if (!pipe_path.empty ())
-    pipefd = open (pipe_path.c_str (), O_RDWR);
+    pipefd = open (pipe_path.c_str (), O_RDWR | O_NONBLOCK);
 }
 
 void
-- 
2.47.2