| // { dg-do run { target c++11 } } |
| |
| // 2014-04-16 RĂ¼diger Sonderfeld <ruediger@c-plusplus.de> |
| |
| // Copyright (C) 2014-2021 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/>. |
| |
| // C++11 [ptr.align] (20.6.5): std::align |
| |
| // { dg-require-cstdint "" } |
| |
| #include <memory> |
| #include <cstdint> |
| #include <testsuite_hooks.h> |
| |
| void |
| test01() |
| { |
| using std::size_t; |
| |
| size_t space = 100; |
| void* ptr = new char[space]; |
| char* const orig_ptr = static_cast<char*>(ptr); |
| char* old_ptr = orig_ptr; |
| const size_t orig_space = space; |
| size_t old_space = space; |
| const size_t alignment = 16; |
| const size_t size = 10; |
| while( void* const r = std::align(alignment, size, ptr, space) ) |
| { |
| VERIFY( r == ptr ); |
| uintptr_t p = reinterpret_cast<uintptr_t>(ptr); |
| VERIFY( p % alignment == 0 ); |
| char* const x = static_cast<char*>(ptr); |
| VERIFY( size_t(x - old_ptr) == old_space - space ); |
| VERIFY( (void*)x < (void*)(orig_ptr + orig_space) ); |
| VERIFY( (void*)(x + size) < (void*)(orig_ptr + orig_space) ); |
| ptr = x + size; |
| old_ptr = x; |
| old_space = space; |
| space -= size; |
| } |
| delete [] orig_ptr; |
| } |
| |
| int main() |
| { |
| test01(); |
| } |