From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Wed, 17 Mar 2021 08:21:42 +0000 (+0100)
Subject: declare variables set from signal handlers as volatile
X-Git-Tag: 4.1-pre1~27
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3812ec2aa277ea65258ff4c5eb501e1e2b1f1b2f;p=thirdparty%2Fchrony.git

declare variables set from signal handlers as volatile

Make sure variables set from signal handlers are not cached in
registers.
---

diff --git a/client.c b/client.c
index b5f0b54a..c0e90220 100644
--- a/client.c
+++ b/client.c
@@ -61,7 +61,7 @@ static ARR_Instance server_addresses;
 
 static int sock_fd = -1;
 
-static int quit = 0;
+static volatile int quit = 0;
 
 static int on_terminal = 0;
 
diff --git a/sched.c b/sched.c
index a4487c39..1f5ebe41 100644
--- a/sched.c
+++ b/sched.c
@@ -111,7 +111,8 @@ static struct timespec last_class_dispatch[SCH_NumberOfClasses];
 
 /* ================================================== */
 
-static int need_to_exit;
+/* Flag terminating the main loop, which can be set from a signal handler */
+static volatile int need_to_exit;
 
 /* ================================================== */