From a856d4d4a8a56eaefdddb58884bfa2bfe922ee4c Mon Sep 17 00:00:00 2001
From: Paul Pluzhnikov <ppluzhnikov@google.com>
Date: Wed, 20 Sep 2017 09:51:02 -0700
Subject: [PATCH] Oops. stdlib/test-atexit-race-common.c should have been part
 of 26e70aec7028feeb196744eb97cd2dff3670b7aa

---
 stdlib/test-atexit-race-common.c | 69 ++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 stdlib/test-atexit-race-common.c

diff --git a/stdlib/test-atexit-race-common.c b/stdlib/test-atexit-race-common.c
new file mode 100644
index 0000000000..b3792837c7
--- /dev/null
+++ b/stdlib/test-atexit-race-common.c
@@ -0,0 +1,69 @@
+/* Bug 14333: Support file for atexit/exit, etc. race tests.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* This file must be run from within a directory called "stdlib".  */
+
+/* The atexit/exit, at_quick_exit/quick_exit, __cxa_atexit/exit, etc.
+   exhibited data race while accessing destructor function list (Bug 14333).
+
+   This test spawns large number of threads, which all race to register
+   large number of destructors.
+
+   Before the fix, running this test resulted in a SIGSEGV.
+   After the fix, we expect clean process termination.  */
+
+#if !defined(CALL_EXIT) || !defined(CALL_ATEXIT)
+#error Must define CALL_EXIT and CALL_ATEXIT before using this file.
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <support/xthread.h>
+
+const size_t kNumThreads = 1024;
+const size_t kNumHandlers = 1024;
+
+static void *
+threadfunc (void *unused)
+{
+  size_t i;
+  for (i = 0; i < kNumHandlers; ++i) {
+    CALL_ATEXIT;
+  }
+  return NULL;
+}
+
+static int
+do_test (void)
+{
+  size_t i;
+  pthread_attr_t attr;
+
+  xpthread_attr_init (&attr);
+  xpthread_attr_setdetachstate (&attr, 1);
+
+  for (i = 0; i < kNumThreads; ++i) {
+    xpthread_create (&attr, threadfunc, NULL);
+  }
+  xpthread_attr_destroy (&attr);
+
+  CALL_EXIT;
+}
+
+#define TEST_FUNCTION do_test
+#include <support/test-driver.c>