thread.cc (execute_native_thread_routine): Do not swallow __forced_unwind exceptions.

	* src/c++11/thread.cc (execute_native_thread_routine): Do not swallow
	__forced_unwind exceptions.
	* testsuite/30_threads/thread/native_handle/cancel.cc: New.

From-SVN: r194539

libstdc++-v3/ChangeLog

+2012-12-16  Jonathan Wakely  <jwakely.gcc@gmail.com>
+
+	* src/c++11/thread.cc (execute_native_thread_routine): Do not swallow
+	__forced_unwind exceptions.
+	* testsuite/30_threads/thread/native_handle/cancel.cc: New.
+
 2012-12-14  Steve Ellcey  <sellcey@mips.com>
 
 	* testsuite/21_strings/basic_string/append/wchar_t/3.cc: Shrink

libstdc++-v3/src/c++11/thread.cc

@@ -26,6 +26,7 @@
 #include <thread>
 #include <system_error>
 #include <cerrno>
+#include <cxxabi_forced.h>
 
 #if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1)
 
@@ -80,6 +81,10 @@ namespace std _GLIBCXX_VISIBILITY(default)
 	{
 	  __t->_M_run();
 	}
+      __catch(const __cxxabiv1::__forced_unwind&)
+	{
+	  __throw_exception_again;
+	}
       __catch(...)
 	{
 	  std::terminate();

libstdc++-v3/testsuite/30_threads/thread/native_handle/cancel.cc

+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
+// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* powerpc-ibm-aix* } }
+// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2012 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 <pthread.h>
+#include <thread>
+#include <atomic>
+
+void f(std::atomic<bool>& started)
+{
+  started = true;
+  while (true)
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+}
+
+int main()
+{
+  std::atomic<bool> started{ false };
+  std::thread t(f, std::ref(started));
+  while (!started)
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  pthread_cancel(t.native_handle());
+  t.join();
+}