116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
// { dg-options "-g -O0" }
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// { dg-do run { target c++11 } }
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// Copyright (C) 2014-2019 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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// Test that current printers still support old definitions of types.
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namespace std
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{
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template<typename T>
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struct _Head_base : T
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{ };
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template<typename T>
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struct _Head_base<T*>
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{
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T* _M_head_impl;
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};
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template<unsigned long, typename ...> struct _Tuple_impl;
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template<typename T, typename U>
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struct _Tuple_impl<0, T, U> : _Tuple_impl<1, U>, _Head_base<T>
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{ };
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template<typename U>
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struct _Tuple_impl<1, U> : _Head_base<U>
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{ };
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template<typename T, typename U>
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struct tuple : _Tuple_impl<0, T, U>
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{ };
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template<typename T> struct default_delete { };
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template<typename T, typename D = default_delete<T>>
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struct unique_ptr
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{
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unique_ptr(T* p) { _M_t._M_head_impl = p; }
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tuple<T*, D> _M_t;
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};
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// Old representation of std::optional, before GCC 9
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template<typename T>
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struct _Optional_payload
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{
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_Optional_payload() : _M_empty(), _M_engaged(false) { }
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struct _Empty_byte { };
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union {
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_Empty_byte _M_empty;
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T _M_payload;
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};
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bool _M_engaged;
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};
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template<typename T>
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struct _Optional_base
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{
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_Optional_payload<T> _M_payload;
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};
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template<typename T>
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struct optional : _Optional_base<T>
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{
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optional() { }
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optional(T t)
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{
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this->_M_payload._M_payload = t;
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this->_M_payload._M_engaged = true;
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}
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};
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} // namespace std
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int
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main()
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{
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struct datum { };
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std::unique_ptr<datum> uptr (new datum);
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// { dg-final { regexp-test uptr {std::unique_ptr.datum. = {get\(\) = 0x.*}} } }
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std::unique_ptr<datum> &ruptr = uptr;
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// { dg-final { regexp-test ruptr {std::unique_ptr.datum. = {get\(\) = 0x.*}} } }
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using std::optional;
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optional<int> o;
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// { dg-final { note-test o {std::optional<int> [no contained value]} } }
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optional<bool> ob{false};
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// { dg-final { note-test ob {std::optional<bool> = {[contained value] = false}} } }
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optional<int> oi{5};
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// { dg-final { note-test oi {std::optional<int> = {[contained value] = 5}} } }
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optional<void*> op{nullptr};
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// { dg-final { note-test op {std::optional<void *> = {[contained value] = 0x0}} } }
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__builtin_puts("");
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return 0; // Mark SPOT
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}
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// { dg-final { gdb-test SPOT } }
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