new file mode 100644
@@ -0,0 +1,39 @@
+// Copyright (C) 2019 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-options "-O1" }
+// { dg-do run { target c++11 } }
+
+// PR middle-end/89303
+
+#include <memory>
+
+class blob final: public std::enable_shared_from_this<blob>
+{
+ int* data;
+
+public:
+ blob() { data = new int; }
+ ~blob() { delete data; }
+};
+
+int
+main()
+{
+ std::shared_ptr<blob> tg = std::make_shared<blob>();
+ return tg->shared_from_this().use_count() - 2;
+}
* testsuite/20_util/enable_shared_from_this/89303.cc: New test. Tested x86_64-linux, committed to trunk. commit 1a2917b994921926d37c609d386a2cc32ed65735 Author: Jonathan Wakely <jwakely@redhat.com> Date: Thu Feb 14 09:16:04 2019 +0000 PR middle-end/89303 add testcase for std::enable_shared_from_this * testsuite/20_util/enable_shared_from_this/89303.cc: New test.