64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
// { dg-options " -std=gnu++11 " }
|
|
|
|
// 2014-04-16 Rüdiger Sonderfeld <ruediger@c-plusplus.de>
|
|
|
|
// Copyright (C) 2014-2015 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()
|
|
{
|
|
bool test __attribute__((unused)) = true;
|
|
|
|
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( 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();
|
|
}
|