normal	2018-07-30 13:28:28 +0900 (Mon, 30 Jul 2018)

  New Revision: 64113

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=64113

  Log:
    thread_pthread.c (rb_sigwait_sleep): fix uninitialized poll set in UBF case
    
    [ruby-core:88088] [Misc #14937] [Bug #5343]

  Modified files:
    trunk/thread_pthread.c
Index: thread_pthread.c
===================================================================
--- thread_pthread.c	(revision 64112)
+++ thread_pthread.c	(revision 64113)
@@ -1613,9 +1613,10 @@ rb_sigwait_sleep(rb_thread_t *th, int si https://github.com/ruby/ruby/blob/trunk/thread_pthread.c#L1613
 {
     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);
     }

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