35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
// Copyright (C) 2018-2019 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/>.
|
|
|
|
// { dg-options "-std=gnu++2a -O2" }
|
|
// { dg-do compile { target c++2a } }
|
|
// { dg-final { scan-assembler-not "undefined" } }
|
|
|
|
#include <memory>
|
|
|
|
int* ptr();
|
|
extern "C" void undefined();
|
|
|
|
void
|
|
test01()
|
|
{
|
|
const std::size_t alignment = 4 * alignof(int);
|
|
int* p = std::assume_aligned<alignment>(ptr());
|
|
if ((std::uintptr_t)p % alignment)
|
|
undefined();
|
|
}
|