diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index f8a6fc8987caad4e5a9fdfd5ebcee9c4b899a110..8e1ba2d47c2d20317c350fa395a08d42bf2b251f 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,11 @@ +2017-06-16 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/shared_ptr.h (get_deleter): Add overload matching + standard signature. + * include/bits/shared_ptr_base.h (__shared_ptr): Declare new + get_deleter overload as a friend. + * testsuite/20_util/shared_ptr/misc/get_deleter.cc: New. + 2017-06-16 Jakub Jelinek <jakub@redhat.com> PR libstdc++/81092 diff --git a/libstdc++-v3/include/bits/shared_ptr.h b/libstdc++-v3/include/bits/shared_ptr.h index 264e35ce2d058bb407daad3d9da5065e191e80fc..999a034dc9b5760bfa8875793eb5931c38572146 100644 --- a/libstdc++-v3/include/bits/shared_ptr.h +++ b/libstdc++-v3/include/bits/shared_ptr.h @@ -70,7 +70,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION return __os; } - /// 20.7.2.2.10 shared_ptr get_deleter template<typename _Del, typename _Tp, _Lock_policy _Lp> inline _Del* get_deleter(const __shared_ptr<_Tp, _Lp>& __p) noexcept @@ -82,6 +81,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION #endif } + /// 20.7.2.2.10 shared_ptr get_deleter + template<typename _Del, typename _Tp> + inline _Del* + get_deleter(const shared_ptr<_Tp>& __p) noexcept + { +#if __cpp_rtti + return static_cast<_Del*>(__p._M_get_deleter(typeid(_Del))); +#else + return 0; +#endif + } /** * @brief A smart pointer with reference-counted copy semantics. diff --git a/libstdc++-v3/include/bits/shared_ptr_base.h b/libstdc++-v3/include/bits/shared_ptr_base.h index a07058c59c464e54ae06ac0fa5f9d80ae8be5f83..7e6766ba7d593021e3b50f99722a3eb48cdf3d6a 100644 --- a/libstdc++-v3/include/bits/shared_ptr_base.h +++ b/libstdc++-v3/include/bits/shared_ptr_base.h @@ -1402,6 +1402,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION template<typename _Del, typename _Tp1, _Lock_policy _Lp1> friend _Del* get_deleter(const __shared_ptr<_Tp1, _Lp1>&) noexcept; + template<typename _Del, typename _Tp1> + friend _Del* get_deleter(const shared_ptr<_Tp1>&) noexcept; + element_type* _M_ptr; // Contained pointer. __shared_count<_Lp> _M_refcount; // Reference counter. }; diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/misc/get_deleter.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/misc/get_deleter.cc new file mode 100644 index 0000000000000000000000000000000000000000..cb5f4c773add0666245b21d5b330ef79a00ad8b7 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/shared_ptr/misc/get_deleter.cc @@ -0,0 +1,44 @@ +// Copyright (C) 2017 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-do run { target c++11 } } + +#include <memory> +#include <testsuite_hooks.h> + +struct Del { + template<typename T> void operator()(T* p) const noexcept { delete p; } +}; + +Del* (*f1)(const std::shared_ptr<int>&) = std::get_deleter<Del, int>; + +void +test01() +{ + std::shared_ptr<int> p; + VERIFY( std::get_deleter<Del>(p) == nullptr ); + p = std::shared_ptr<int>(new int, Del()); + VERIFY( std::get_deleter<Del>(p) != nullptr ); + p = std::shared_ptr<int>(new int); + VERIFY( std::get_deleter<Del>(p) == nullptr ); +} + +int +main() +{ + test01(); +}