From 4514362948fdb914c6138b12d961d92e9c0fee6c Mon Sep 17 00:00:00 2001
From: normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 30 Jul 2018 04:28:28 +0000
Subject: [PATCH] thread_pthread.c (rb_sigwait_sleep): fix uninitialized poll
 set in UBF case

[ruby-core:88088] [Misc #14937] [Bug #5343]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64113 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 thread_pthread.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/thread_pthread.c b/thread_pthread.c
index 8f63da2e93..1ab676bc89 100644
--- a/thread_pthread.c
+++ b/thread_pthread.c
@@ -1613,9 +1613,10 @@ rb_sigwait_sleep(rb_thread_t *th, int sigwait_fd, const struct timespec *ts)
 {
     struct pollfd pfd;
 
+    pfd.fd = sigwait_fd;
+    pfd.events = POLLIN;
+
     if (ubf_threads_empty()) {
-        pfd.fd = sigwait_fd;
-        pfd.events = POLLIN;
         (void)ppoll(&pfd, 1, ts, 0);
         check_signals_nogvl(th, sigwait_fd);
     }