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.

1 files changed, 103 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc b/libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc
new file mode 100644
index 000000000..fd1ed09c6
--- /dev/null
+++ b/libstdc++-v3/testsuite/ext/rope/pthread7-rope.cc
@@ -0,0 +1,103 @@
+// 2003-05-03  Loren J. Rittle <rittle@labs.mot.com> <ljrittle@acm.org>
+//
+// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 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 { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options "-pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
+// { dg-options "-pthreads" { target *-*-solaris* } }
+
+#include <ext/rope>
+#include <cstring>
+#include <pthread.h>
+#include <testsuite_hooks.h>
+
+const int max_thread_count = 4;
+const int max_loop_count = 10000;
+
+typedef __gnu_cxx::rope<char, std::allocator<char> > rope_type;
+rope_type foo2;
+rope_type foo4;
+
+void* thread_main(void *) 
+{
+  // To see a problem with gcc 3.3 and before, set a break point here.
+  // Single step through c_str implementation, call sched_yield after
+  // capture of NULL __old_c_string in any thread.  Single step
+  // through another thread past that same point.  Now, one thread
+  // will receive a bad pointer return.  Adding dummy sched_yield
+  // should never change program semantics under POSIX threads.
+  const char* data4 = foo4.c_str();
+
+  // Please note that the memory leak in the rope implementation with
+  // this test case, existed before and after fixing this bug...
+  bool test __attribute__((unused)) = true;
+  VERIFY( !std::strcmp (data4, "barbazbonglehellohellohello") );
+  return 0;
+}
+
+int
+main()
+{
+  bool test __attribute__((unused)) = true;
+
+  pthread_t tid[max_thread_count];
+
+#if defined(__sun) && defined(__svr4__) && _XOPEN_VERSION >= 500
+  pthread_setconcurrency (max_thread_count);
+#endif
+
+  rope_type foo;
+  foo += "bar";
+  foo += "baz";
+  foo += "bongle";
+  const char* data = foo.c_str();
+  VERIFY( !std::strcmp (data, "barbazbongle") );
+
+  const char* data2;
+  {
+    foo2 += "bar2";
+    foo2 += "baz2";
+    foo2 += "bongle2";
+    data2 = foo2.c_str();
+    VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );
+  }
+
+  rope_type foo3 ("hello");
+  const char* data3 = foo3.c_str();
+  VERIFY( !std::strcmp (data3, "hello") );
+
+  for (int j = 0; j < max_loop_count; j++)
+    {
+      foo4 = foo;
+      foo4 += foo3;
+      foo4 += foo3;
+      foo4 += foo3;
+
+      for (int i = 0; i < max_thread_count; i++)
+	pthread_create (&tid[i], 0, thread_main, 0);
+
+      for (int i = 0; i < max_thread_count; i++)
+	pthread_join (tid[i], 0);
+    }
+
+  VERIFY( !std::strcmp (data, "barbazbongle") );
+  VERIFY( !std::strcmp (data2, "bar2baz2bongle2") );
+
+  return 0;
+}