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.

16 files changed, 633 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/assign1_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/assign1_neg.cc
new file mode 100644
index 000000000..9a4d7d439
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/assign1_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_assign1<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/assign2_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/assign2_neg.cc
new file mode 100644
index 000000000..32eda8794
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/assign2_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_assign2<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/assign3_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/assign3_neg.cc
new file mode 100644
index 000000000..3d2b15e94
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/assign3_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_assign3<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/assign4_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/assign4_neg.cc
new file mode 100644
index 000000000..7b6204158
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/assign4_neg.cc
@@ -0,0 +1,32 @@
+// 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/>.
+//
+// { dg-do run { xfail *-*-* } }
+
+#include <debug/deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_assign1<__gnu_debug::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/construct1_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/construct1_neg.cc
new file mode 100644
index 000000000..6268951d7
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/construct1_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_construct1<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/construct2_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/construct2_neg.cc
new file mode 100644
index 000000000..3b8d77547
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/construct2_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_construct2<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/construct3_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/construct3_neg.cc
new file mode 100644
index 000000000..1187cf8b1
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/construct3_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_construct3<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/construct4_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/construct4_neg.cc
new file mode 100644
index 000000000..7d7906d05
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/construct4_neg.cc
@@ -0,0 +1,32 @@
+// 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/>.
+//
+// { dg-do run { xfail *-*-* } }
+
+#include <debug/deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_construct1<__gnu_debug::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/insert1_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/insert1_neg.cc
new file mode 100644
index 000000000..38b4f554a
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/insert1_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_insert1<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/insert2_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/insert2_neg.cc
new file mode 100644
index 000000000..5aa7efae6
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/insert2_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_insert2<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/insert3_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/insert3_neg.cc
new file mode 100644
index 000000000..bd854ad87
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/insert3_neg.cc
@@ -0,0 +1,33 @@
+// 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/>.
+//
+// { dg-require-debug-mode "" }
+// { dg-do run { xfail *-*-* } }
+
+#include <deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_insert3<std::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/insert4_neg.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/insert4_neg.cc
new file mode 100644
index 000000000..ff88760ad
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/insert4_neg.cc
@@ -0,0 +1,32 @@
+// 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/>.
+//
+// { dg-do run { xfail *-*-* } }
+
+#include <debug/deque>
+#include <debug/checks.h>
+
+void test01()
+{
+  __gnu_test::check_insert1<__gnu_debug::deque<int> >();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/1.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/1.cc
new file mode 100644
index 000000000..6af6697ea
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/1.cc
@@ -0,0 +1,52 @@
+// Deque iterator invalidation tests
+
+// Copyright (C) 2003, 2004, 2005, 2006, 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 <debug/deque>
+#include <testsuite_hooks.h>
+
+using __gnu_debug::deque;
+
+bool test = true;
+
+// Assignment
+void test01()
+{
+  deque<int> v1;
+  deque<int> v2;
+
+  deque<int>::iterator i = v1.end();
+  VERIFY(!i._M_dereferenceable() && !i._M_singular());
+
+  v1 = v2;
+  VERIFY(i._M_singular());
+  
+  i = v1.end();
+  v1.assign(v2.begin(), v2.end());
+  VERIFY(i._M_singular());
+
+  i = v1.end();
+  v1.assign(17, 42);
+  VERIFY(i._M_singular());
+}
+
+int main()
+{
+  test01();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/2.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/2.cc
new file mode 100644
index 000000000..abbf47e93
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/2.cc
@@ -0,0 +1,52 @@
+// Deque iterator invalidation tests
+
+// Copyright (C) 2003, 2004, 2005, 2006, 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 <debug/deque>
+#include <testsuite_hooks.h>
+
+using __gnu_debug::deque;
+
+bool test = true;
+
+// Resize
+void test02()
+{
+  deque<int> v(10, 17);
+
+  deque<int>::iterator before = v.begin() + 6;
+  deque<int>::iterator at = before + 1;
+  deque<int>::iterator after = at + 1;
+
+  // Shrink
+  v.resize(7);
+  VERIFY(before._M_dereferenceable());
+  VERIFY(at._M_singular());
+  VERIFY(after._M_singular());
+
+  // Grow
+  before = v.begin() + 6;
+  v.resize(17);
+  VERIFY(before._M_singular());
+}
+
+int main()
+{
+  test02();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/3.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/3.cc
new file mode 100644
index 000000000..c5a936a5b
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/3.cc
@@ -0,0 +1,62 @@
+// Deque iterator invalidation tests
+
+// Copyright (C) 2003, 2004, 2005, 2006, 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 <debug/deque>
+#include <testsuite_hooks.h>
+
+using __gnu_debug::deque;
+
+bool test = true;
+
+// Insert
+void test03()
+{
+  deque<int> v(10, 17);
+
+  // Insert a single element
+  deque<int>::iterator before = v.begin() + 6;
+  deque<int>::iterator at = before + 1;
+  deque<int>::iterator after = at;
+  at = v.insert(at, 42);
+  VERIFY(before._M_singular());
+  VERIFY(at._M_dereferenceable());
+  VERIFY(after._M_singular());
+
+  // Insert multiple copies
+  before = v.begin() + 6;
+  at = before + 1;
+
+  v.insert(at, 3, 42);
+  VERIFY(before._M_singular());
+  VERIFY(at._M_singular());
+
+  // Insert iterator range
+  static int data[] = { 2, 3, 5, 7 };
+  before = v.begin() + 6;
+  at = before + 1;
+  v.insert(at, &data[0], &data[0] + 4);
+  VERIFY(before._M_singular());
+  VERIFY(at._M_singular());
+}
+
+int main()
+{
+  test03();
+  return 0;
+}
diff --git a/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/4.cc b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/4.cc
new file mode 100644
index 000000000..342f5ead7
--- /dev/null
+++ b/libstdc++-v3/testsuite/23_containers/deque/debug/invalidation/4.cc
@@ -0,0 +1,74 @@
+// Deque iterator invalidation tests
+
+// Copyright (C) 2003, 2005, 2006, 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 <debug/deque>
+#include <testsuite_hooks.h>
+
+using __gnu_debug::deque;
+
+bool test = true;
+
+// Erase
+void test04()
+{
+  deque<int> v(20, 42);
+
+  // Single element erase (middle)
+  deque<int>::iterator before = v.begin();
+  deque<int>::iterator at = before + 3;
+  deque<int>::iterator after = at;
+  at = v.erase(at);
+  VERIFY(before._M_singular());
+  VERIFY(at._M_dereferenceable());
+  VERIFY(after._M_singular());
+
+  // Single element erase (end)
+  before = v.begin();
+  at = before;
+  after = at + 1;
+  at = v.erase(at);
+  VERIFY(before._M_singular());
+  VERIFY(at._M_dereferenceable());
+  VERIFY(after._M_dereferenceable());
+
+  // Multiple element erase
+  before = v.begin();
+  at = before + 3;
+  v.erase(at, at + 3);
+  VERIFY(before._M_singular());
+  VERIFY(at._M_singular());
+
+  // Multiple element erase at end
+  before = v.begin();
+  at = before + 3;
+  v.erase(at, v.end());
+  *before;
+
+  // clear()
+  before = v.begin();
+  VERIFY(before._M_dereferenceable());
+  v.clear();
+  VERIFY(before._M_singular());
+}
+
+int main()
+{
+  test04();
+  return 0;
+}