ace4c2f060
PR libstdc++/65122 * include/ext/malloc_allocator.h (malloc_allocator::allocate): Use aligned_alloc for types with extended alignment if available, otherwise throw bad_alloc if malloc doesn't return a suitable value. * include/ext/bitmap_allocator.h (bitmap_allocator::allocate) (bitmap_allocator::deallocate): Use aligned new/delete for types with extended alignment. * include/ext/mt_allocator.h (__mt_alloc::allocate) (__mt_alloc::deallocate): Likewise. * include/ext/new_allocator.h (new_allocator::allocate) (new_allocator::deallocate): Likewise. * include/ext/pool_allocator.h (__pool_alloc::allocate) (__pool_alloc::deallocate): Likewise. * testsuite/20_util/allocator/overaligned.cc: New test. * testsuite/ext/bitmap_allocator/overaligned.cc: New test. * testsuite/ext/malloc_allocator/overaligned.cc: New test. * testsuite/ext/mt_allocator/overaligned.cc: New test. * testsuite/ext/new_allocator/overaligned.cc: New test. * testsuite/ext/pool_allocator/overaligned.cc: New test. From-SVN: r241158
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
// Copyright (C) 2016 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 "-faligned-new" }
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// { dg-do run { target c++11 } }
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#include <ext/mt_allocator.h>
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#include <cstddef>
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#include <cstdint>
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#include <testsuite_hooks.h>
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constexpr std::size_t align = alignof(std::max_align_t) * 4;
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struct X {
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alignas(align) char c;
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};
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void
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test01()
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{
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__gnu_cxx::__mt_alloc<X> a;
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X* p1 = a.allocate(1);
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VERIFY( (reinterpret_cast<std::uintptr_t>(p1) % align) == 0 );
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a.deallocate(p1, 1);
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X* p2 = a.allocate(20);
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VERIFY( (reinterpret_cast<std::uintptr_t>(p2) % align) == 0 );
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a.deallocate(p2, 20);
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}
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int
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main()
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{
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test01();
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}
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