obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

4 files changed, 417 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/30_threads/try_lock/1.cc b/libstdc++-v3/testsuite/30_threads/try_lock/1.cc
new file mode 100644
index 000000000..ec3b6321c
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/try_lock/1.cc
@@ -0,0 +1,63 @@
+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2008, 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 <mutex>
+#include <system_error>
+#include <testsuite_hooks.h>
+
+int main()
+{
+  bool test __attribute__((unused)) = true;
+  typedef std::mutex mutex_type;
+  typedef std::unique_lock<mutex_type> lock_type;
+
+  try
+    {
+      mutex_type m1, m2, m3;
+      lock_type l1(m1, std::defer_lock), 
+	l2(m2, std::defer_lock),
+	l3(m3, std::defer_lock);
+
+      try
+	{
+	  int result = std::try_lock(l1, l2, l3);
+	  VERIFY( result == -1 );
+	}
+      catch (const std::system_error& e)
+	{
+	  VERIFY( false );
+	}
+    }
+  catch (const std::system_error& e)
+    {
+      VERIFY( false );
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/30_threads/try_lock/2.cc b/libstdc++-v3/testsuite/30_threads/try_lock/2.cc
new file mode 100644
index 000000000..b24e7e396
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/try_lock/2.cc
@@ -0,0 +1,110 @@
+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2008, 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 <mutex>
+#include <system_error>
+#include <testsuite_hooks.h>
+
+typedef std::unique_lock<std::mutex> lock_type;
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  try
+    {
+      std::mutex m1, m2, m3;
+      lock_type l1(m1);
+      int result = std::try_lock(m1, m2, m3);
+      VERIFY( result == 0 );
+      VERIFY( l1.owns_lock() );
+      lock_type l2(m2);
+      lock_type l3(m3);
+    }
+  catch (const std::system_error& e)
+    {
+      VERIFY( false );
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+void test02()
+{
+  bool test __attribute__((unused)) = true;
+
+  try
+    {
+      std::mutex m1, m2, m3;
+      lock_type l2(m2);
+      int result = std::try_lock(m1, m2, m3);
+      VERIFY( result == 1 );
+      VERIFY( l2.owns_lock() );
+      lock_type l1(m1);
+      lock_type l3(m3);
+    }
+  catch (const std::system_error& e)
+    {
+      VERIFY( false );
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+void test03()
+{
+  bool test __attribute__((unused)) = true;
+
+  try
+    {
+      std::mutex m1, m2, m3;
+      lock_type l3(m3);
+      int result = std::try_lock(m1, m2, m3);
+      VERIFY( result == 2 );
+      VERIFY( l3.owns_lock() );
+      lock_type l1(m1);
+      lock_type l2(m2);
+    }
+  catch (const std::system_error& e)
+    {
+      VERIFY( false );
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+int main()
+{
+  test01();
+  test02();
+  test03();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/30_threads/try_lock/3.cc b/libstdc++-v3/testsuite/30_threads/try_lock/3.cc
new file mode 100644
index 000000000..66e154277
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/try_lock/3.cc
@@ -0,0 +1,91 @@
+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2008, 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 <mutex>
+#include <system_error>
+#include <testsuite_hooks.h>
+
+struct user_lock
+{
+  user_lock() : is_locked(false) { }
+  ~user_lock() = default;
+  user_lock(const user_lock&) = default;
+
+  void lock()
+  {
+    bool test __attribute__((unused)) = true;
+    VERIFY( !is_locked );
+    is_locked = true;
+  }
+
+  bool try_lock() 
+  { return is_locked ? false : (is_locked = true); }
+
+  void unlock()
+  {
+    bool test __attribute__((unused)) = true;
+    VERIFY( is_locked );
+    is_locked = false;
+  }
+
+private:
+  bool is_locked;
+};
+
+int main()
+{
+  bool test __attribute__((unused)) = true;
+
+  try
+    {
+      std::mutex m1;
+      std::recursive_mutex m2;
+      user_lock m3;
+
+      try
+	{
+	  //heterogeneous types
+	  int result = std::try_lock(m1, m2, m3);
+	  VERIFY( result == -1 );
+	  m1.unlock();
+	  m2.unlock();
+	  m3.unlock();
+	}
+      catch (const std::system_error& e)
+	{
+	  VERIFY( false );
+	}
+    }
+  catch (const std::system_error& e)
+    {
+      VERIFY( false );
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/30_threads/try_lock/4.cc b/libstdc++-v3/testsuite/30_threads/try_lock/4.cc
new file mode 100644
index 000000000..7750fc924
--- /dev/null
+++ b/libstdc++-v3/testsuite/30_threads/try_lock/4.cc
@@ -0,0 +1,153 @@
+// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
+// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
+// { dg-require-cstdint "" }
+// { dg-require-gthreads "" }
+
+// Copyright (C) 2010 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 <mutex>
+#include <testsuite_hooks.h>
+
+struct unreliable_lock
+{
+  std::mutex m;
+  std::unique_lock<std::mutex> l;
+
+  static int count;
+  static int throw_on;
+  static int lock_on;
+
+  unreliable_lock() : l(m, std::defer_lock) { }
+
+  ~unreliable_lock()
+  {
+    bool test __attribute__((unused)) = true;
+    VERIFY( !l.owns_lock() );
+  }
+
+  void lock()
+  {
+    if (count == throw_on)
+      throw throw_on;
+    ++count;
+    l.lock();
+  }
+  bool try_lock()
+  {
+    if (count == throw_on)
+      throw throw_on;
+    std::unique_lock<std::mutex> l2(m, std::defer_lock);
+    if (count == lock_on)
+      l2.lock();
+    ++count;
+    return l.try_lock();
+  }
+
+  void unlock()
+  {
+    bool test __attribute__((unused)) = true;
+    VERIFY( l.owns_lock() );
+    l.unlock();
+  }
+
+};
+
+int unreliable_lock::count = 0;
+int unreliable_lock::throw_on = -1;
+int unreliable_lock::lock_on = -1;
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  unreliable_lock l1, l2, l3;
+
+  try
+    {
+      unreliable_lock::count = 0;
+      int result = std::try_lock(l1, l2, l3);
+      VERIFY( result == -1 );
+      VERIFY( unreliable_lock::count == 3 );
+      l1.unlock();
+      l2.unlock();
+      l3.unlock();
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+void test02()
+{
+  bool test __attribute__((unused)) = true;
+
+  unreliable_lock l1, l2, l3;
+
+  try
+    {
+      // test behaviour when a lock is already held
+      unreliable_lock::lock_on = 0;
+      while (unreliable_lock::lock_on < 3)
+      {
+        unreliable_lock::count = 0;
+        int failed = std::try_lock(l1, l2, l3);
+        VERIFY( failed == unreliable_lock::lock_on );
+        ++unreliable_lock::lock_on;
+      }
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+void test03()
+{
+  bool test __attribute__((unused)) = true;
+
+  unreliable_lock l1, l2, l3;
+
+  try
+    {
+      // test behaviour when an exception is thrown
+      unreliable_lock::throw_on = 0;
+      while (unreliable_lock::throw_on < 3)
+      {
+        unreliable_lock::count = 0;
+        int failed = std::try_lock(l1, l2, l3);
+        VERIFY( failed == unreliable_lock::throw_on );
+        ++unreliable_lock::throw_on;
+      }
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+int main()
+{
+  test01();
+  test02();
+  test03();
+  return 0;
+}