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diff --git a/libstdc++-v3/testsuite/19_diagnostics/system_error/what-4.cc b/libstdc++-v3/testsuite/19_diagnostics/system_error/what-4.cc
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index 00000000..2b5d51c4
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+++ b/libstdc++-v3/testsuite/19_diagnostics/system_error/what-4.cc
@@ -0,0 +1,45 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2007, 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/>.
+
+// 19.1 Exception classes
+
+#include <cstring>
+#include <string>
+#include <system_error>
+#include <testsuite_hooks.h>
+
+// Make sure each invocation of what() doesn't grow the message.
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+  std::string s("after nine thirty, this request cannot be met");
+
+  std::system_error obj =
+    std::system_error(std::make_error_code(std::errc::invalid_argument), s);
+  std::string s1(obj.what());
+  std::string s2(obj.what());
+  VERIFY( s1 == s2 );
+}
+
+int main(void)
+{
+  test01();
+  return 0;
+}