8a972abdd9
PR libstdc++/59829 * include/bits/stl_vector.h (vector::data()): Call _M_data_ptr. (vector::_M_data_ptr): New overloaded functions to ensure empty vectors do not dereference the pointer. * testsuite/23_containers/vector/59829.cc: New. * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc: Adjust dg-error line number. * testsuite/23_containers/vector/requirements/dr438/ constructor_1_neg.cc: Likewise. * testsuite/23_containers/vector/requirements/dr438/ constructor_2_neg.cc: Likewise. * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc: Likewise. From-SVN: r207241
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
// 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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// libstdc++/59829
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#include <vector>
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#include <testsuite_allocator.h>
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// User-defined pointer type that throws if a null pointer is dereferenced.
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template<typename T>
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struct Pointer : __gnu_test::PointerBase<Pointer<T>, T>
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{
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using __gnu_test::PointerBase<Pointer<T>, T>::PointerBase;
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T& operator*() const
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{
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if (!this->value)
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throw "Dereferenced invalid pointer";
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return *this->value;
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}
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};
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// Minimal allocator using Pointer<T>
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template<typename T>
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struct Alloc
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{
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typedef T value_type;
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typedef Pointer<T> pointer;
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Alloc() = default;
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template<typename U>
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Alloc(const Alloc<U>&) { }
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pointer allocate(std::size_t n)
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{ return pointer(std::allocator<T>().allocate(n)); }
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void deallocate(pointer p, std::size_t n)
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{ std::allocator<T>().deallocate(p.value, n); }
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};
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template<typename T>
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bool operator==(Alloc<T> l, Alloc<T> r) { return true; }
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template<typename T>
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bool operator!=(Alloc<T> l, Alloc<T> r) { return false; }
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int main()
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{
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std::vector<int, Alloc<int>> a;
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a.data();
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}
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