re PR sanitizer/64265 (r217669 broke tsan)

PR sanitizer/64265
	* g++.dg/tsan/pr64265.C: New test.

From-SVN: r221509

gcc/testsuite/ChangeLog

@@ -1,5 +1,8 @@
 2015-03-19  Jakub Jelinek  <jakub@redhat.com>
 
+	PR sanitizer/64265
+	* g++.dg/tsan/pr64265.C: New test.
+
 	PR sanitizer/65400
 	* c-c++-common/tsan/pr65400-1.c: New test.
 	* c-c++-common/tsan/pr65400-2.c: New test.

gcc/testsuite/g++.dg/tsan/pr64265.C

@@ -0,0 +1,54 @@
+// PR sanitizer/64265
+// { dg-shouldfail "tsan" }
+// { dg-additional-options "-fno-omit-frame-pointer -ldl" }
+
+#include <pthread.h>
+#include "tsan_barrier.h"
+
+static pthread_barrier_t barrier;
+int v;
+
+__attribute__((noinline, noclone)) int
+foo (int x)
+{
+  if (x < 99)
+    throw x;
+  barrier_wait (&barrier);
+  v++;
+  return x;
+}
+
+__attribute__((noinline, noclone)) void
+bar (void)
+{
+  for (int i = 0; i < 100; i++)
+    try
+      {
+	foo (i);
+      }
+    catch (int)
+      {
+      }
+}
+
+__attribute__((noinline, noclone)) void *
+tf (void *)
+{
+  bar ();
+  return NULL;
+}
+
+int
+main ()
+{
+  pthread_t th;
+  barrier_init (&barrier, 2);
+  if (pthread_create (&th, NULL, tf, NULL))
+    return 0;
+  v++;
+  barrier_wait (&barrier);
+  pthread_join (th, NULL);
+  return 0;
+}
+
+// { dg-output "WARNING: ThreadSanitizer: data race.*#2 _?(tf|_Z2tfPv)" }