Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 29_atomics / atomic_flag / clear / 1.c

diff --git a/libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.c b/libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.c
new file mode 100644 (file)
index 0000000..3fd2f2c
--- /dev/null
+++ b/libstdc++-v3/testsuite/29_atomics/atomic_flag/clear/1.c
@@ -0,0 +1,34 @@
+// { dg-options "-x c -shared-libgcc -lstdc++" }
+
+// Copyright (C) 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This 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 General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <cassert>
+#include <stdatomic.h>
+
+// libstdc++/40826
+// libstdc++/40654
+int main()
+{
+  atomic_flag f = ATOMIC_FLAG_INIT;
+
+  atomic_flag_clear(&f); // set to false
+  assert( false == atomic_flag_test_and_set(&f) ); // return previous false, set to true
+  assert( true == atomic_flag_test_and_set(&f) ); // return true
+
+  return 0;
+}