Make reference_wrapper trivially copyable.
* include/std/functional (reference_wrapper): Define copy constructor and copy assignment as defaulted. * testsuite/20_util/bind/ref_neg.cc: Adjust dg-error. * testsuite/20_util/reference_wrapper/requirements.cc: New. From-SVN: r217067
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@ -11,6 +11,11 @@
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* include/bits/regex.tcc (regex_traits::lookup_classname): Use
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ctype_base::blank.
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* include/std/functional (reference_wrapper): Define copy constructor
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and copy assignment as defaulted.
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* testsuite/20_util/bind/ref_neg.cc: Adjust dg-error.
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* testsuite/20_util/reference_wrapper/requirements.cc: New.
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2014-11-03 Paolo Carlini <paolo.carlini@oracle.com>
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* include/parallel/algo.h: Do not use default arguments in function
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@ -410,16 +410,10 @@ _GLIBCXX_HAS_NESTED_TYPE(result_type)
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reference_wrapper(_Tp&&) = delete;
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reference_wrapper(const reference_wrapper<_Tp>& __inref) noexcept
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: _M_data(__inref._M_data)
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{ }
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reference_wrapper(const reference_wrapper&) = default;
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reference_wrapper&
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operator=(const reference_wrapper<_Tp>& __inref) noexcept
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{
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_M_data = __inref._M_data;
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return *this;
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}
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operator=(const reference_wrapper&) = default;
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operator _Tp&() const noexcept
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{ return this->get(); }
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@ -30,10 +30,10 @@ void test01()
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{
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const int dummy = 0;
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std::bind(&inc, _1)(0); // { dg-error "no match" }
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// { dg-error "rvalue|const" "" { target *-*-* } 1213 }
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// { dg-error "rvalue|const" "" { target *-*-* } 1227 }
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// { dg-error "rvalue|const" "" { target *-*-* } 1241 }
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// { dg-error "rvalue|const" "" { target *-*-* } 1255 }
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// { dg-error "rvalue|const" "" { target *-*-* } 1207 }
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// { dg-error "rvalue|const" "" { target *-*-* } 1221 }
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// { dg-error "rvalue|const" "" { target *-*-* } 1235 }
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// { dg-error "rvalue|const" "" { target *-*-* } 1249 }
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std::bind(&inc, std::ref(dummy))(); // { dg-error "no match" }
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}
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@ -0,0 +1,32 @@
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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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// { dg-options "-std=gnu++11" }
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// { dg-do compile }
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#include <functional>
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struct NonTrivial
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{
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~NonTrivial() { }
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};
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using R = std::reference_wrapper<NonTrivial>;
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static_assert(std::is_copy_constructible<R>::value, "copy constructible");
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static_assert(std::is_copy_assignable<R>::value, "copy assignable");
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static_assert(std::is_trivially_copyable<R>::value, "trivially copyable");
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