From 3e97e583ba49c666e12c5d772b361bde8cfa464a Mon Sep 17 00:00:00 2001
From: Daniel <dkozovsk@redhat.com>
Date: Thu, 26 Jul 2018 15:39:12 +0200
Subject: void call of page_size guarantees that sysconf is not called from
 signal handler

(cherry picked from commit 1595b257df98b361d178b3ce3e4ca5ac463be0cd)
---
 src/basic/sigbus.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/basic/sigbus.c b/src/basic/sigbus.c
index 70afba6bc..d5254eab9 100644
--- a/src/basic/sigbus.c
+++ b/src/basic/sigbus.c
@@ -113,6 +113,10 @@ void sigbus_install(void) {
                 .sa_flags = SA_SIGINFO,
         };
 
+        /* make sure that sysconf() is not called from a signal handler because
+        * it is not guaranteed to be async-signal-safe since POSIX.1-2008 */
+        (void) page_size();
+
         n_installed++;
 
         if (n_installed == 1)
-- 
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