From 38d7235ab45334e0c88f97c1e5bc7d4814f59669 Mon Sep 17 00:00:00 2001
From: Sam Varshavchik
Date: Tue, 27 Oct 2020 20:01:00 -0400
Subject: Fix LTO failure on F33.

---
 waitlib/Makefile.am  |  3 ++-
 waitlib/configure.ac | 20 ++++++++++++++++++++
 waitlib/testwait.c   | 16 +++++++++++++---
 waitlib/testwait2.c  |  9 ---------
 4 files changed, 35 insertions(+), 13 deletions(-)
 delete mode 100644 waitlib/testwait2.c

(limited to 'waitlib')

diff --git a/waitlib/Makefile.am b/waitlib/Makefile.am
index 33be798..a743c58 100644
--- a/waitlib/Makefile.am
+++ b/waitlib/Makefile.am
@@ -10,9 +10,10 @@ EXTRA_DIST=confwait.c
 
 libwaitlib_la_SOURCES=waitlib.c waitlib.h waitlib2.c
 
-testwait_SOURCES=testwait.c testwait2.c
+testwait_SOURCES=testwait.c
 testwait_DEPENDENCIES=libwaitlib.la
 testwait_LDADD=libwaitlib.la
+testwait_CFLAGS=@PTHREAD@
 
 check-am:
 	./testwait
diff --git a/waitlib/configure.ac b/waitlib/configure.ac
index d475dee..c40846d 100644
--- a/waitlib/configure.ac
+++ b/waitlib/configure.ac
@@ -106,4 +106,24 @@ then
 	CFLAGS="-Wall $CFLAGS"
 fi
 
+save_CFLAGS="$CFLAGS"
+
+AC_CACHE_CHECK([for -pthread flag],waitlib_cv_PTHREAD,
+		    CFLAGS="$CFLAGS -pthread"
+		    AC_TRY_COMPILE([],[],
+		    [
+		    waitlib_cv_PTHREAD='yes'
+		    ],
+		    [
+		    waitlib_cv_PTHREAD='no'
+		    ]))
+CFLAGS="$save_CFLAGS"
+
+PTHREAD=''
+if test "$waitlib_cv_PTHREAD" = "yes"
+then
+	PTHREAD="$CFLAGS -pthread"
+fi
+AC_SUBST(PTHREAD)
+
 AC_OUTPUT(Makefile)
diff --git a/waitlib/testwait.c b/waitlib/testwait.c
index fb0fe48..6020c36 100644
--- a/waitlib/testwait.c
+++ b/waitlib/testwait.c
@@ -1,5 +1,5 @@
 /*
-** Copyright 1998 - 2006 Double Precision, Inc.
+** Copyright 1998 - 2020 Double Precision, Inc.
 ** See COPYING for distribution information.
 */
 
@@ -10,17 +10,24 @@
 #include	<stdio.h>
 #include	<stdlib.h>
 #include	<signal.h>
+#include	<pthread.h>
 
 /* Stress test waitlib.c */
 
 #define	NUMCHILDREN	100		/* Start 100 child processes */
 #define	INITCHILDREN	10		/* Start with these many child procs */
 
+pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
+
 static unsigned started, finished;
 
 static void reap_child(pid_t p, int dummy)
 {
+	pthread_mutex_lock(&mutex);
 	++finished;
+	pthread_cond_signal(&cond);
+	pthread_mutex_unlock(&mutex);
 }
 
 static RETSIGTYPE sighandler(int sig)
@@ -87,13 +94,16 @@ char	c;
 		; /* Shut gcc up */
 	close(pipefd[1]);
 	close(pipefd2[0]);
-
 	while (started < NUMCHILDREN)
 		if (start_child() == 0)
 			_exit(0);
 
 	alarm(30);
+	pthread_mutex_lock(&mutex);
 	while (finished < started)
-		foobar();
+	{
+		pthread_cond_wait(&cond, &mutex);
+	}
+	pthread_mutex_unlock(&mutex);
 	exit(0);
 }
diff --git a/waitlib/testwait2.c b/waitlib/testwait2.c
deleted file mode 100644
index f64cc78..0000000
--- a/waitlib/testwait2.c
+++ /dev/null
@@ -1,9 +0,0 @@
-/*
-** Copyright 1998 - 1999 Double Precision, Inc.
-** See COPYING for distribution information.
-*/
-
-
-void foobar()
-{
-}
-- 
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