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diff --git a/libstdc++-v3/testsuite/26_numerics/headers/cmath/19322.cc b/libstdc++-v3/testsuite/26_numerics/headers/cmath/19322.cc
new file mode 100644
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+++ b/libstdc++-v3/testsuite/26_numerics/headers/cmath/19322.cc
@@ -0,0 +1,38 @@
+// Copyright (C) 2005, 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 <cmath>
+#include <testsuite_hooks.h>
+
+#if _GLIBCXX_USE_C99_MATH
+// libstdc++/19322
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  VERIFY( !std::isnan(3.0) );
+}
+#endif
+
+int main()
+{
+#if _GLIBCXX_USE_C99_MATH
+  test01();
+#endif
+  return 0;
+}