mirror of git://gcc.gnu.org/git/gcc.git
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
// { dg-do compile { target *-*-freebsd* *-*-dragonfly* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* *-*-solaris* *-*-cygwin *-*-darwin* powerpc-ibm-aix* } }
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// { dg-options " -std=gnu++11 -pthread" { target *-*-freebsd* *-*-dragonfly* *-*-netbsd* *-*-linux* *-*-gnu* powerpc-ibm-aix* } }
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// { dg-options " -std=gnu++11 -pthreads" { target *-*-solaris* } }
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// { dg-options " -std=gnu++11 " { target *-*-cygwin *-*-darwin* } }
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// { dg-require-cstdint "" }
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// { dg-require-gthreads "" }
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// Copyright (C) 2014 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// libstdc++/60497
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#include <mutex>
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#include <memory>
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struct A;
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template<typename T> struct B { T t; };
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using UP = std::unique_ptr<B<A>>;
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void f(UP&) { }
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void g(UP& p)
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{
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std::once_flag o;
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std::call_once(o, f, std::ref(p));
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}
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