62 lines
1.8 KiB
C++
62 lines
1.8 KiB
C++
// { dg-do run { target c++11 } }
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// 2014-04-16 Rüdiger Sonderfeld <ruediger@c-plusplus.de>
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// Copyright (C) 2014-2017 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 terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// C++11 [ptr.align] (20.6.5): std::align
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// { dg-require-cstdint "" }
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#include <memory>
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#include <cstdint>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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size_t space = 100;
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void* ptr = new char[space];
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char* const orig_ptr = static_cast<char*>(ptr);
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char* old_ptr = orig_ptr;
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const size_t orig_space = space;
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size_t old_space = space;
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const size_t alignment = 16;
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const size_t size = 10;
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while( void* const r = std::align(alignment, size, ptr, space) )
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{
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VERIFY( r == ptr );
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uintptr_t p = reinterpret_cast<uintptr_t>(ptr);
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VERIFY( p % alignment == 0 );
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char* const x = static_cast<char*>(ptr);
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VERIFY( x - old_ptr == old_space - space );
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VERIFY( (void*)x < (void*)(orig_ptr + orig_space) );
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VERIFY( (void*)(x + size) < (void*)(orig_ptr + orig_space) );
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ptr = x + size;
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old_ptr = x;
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old_space = space;
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space -= size;
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}
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delete [] orig_ptr;
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}
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int main()
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{
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test01();
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}
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