view libunwind/test/alignment.compile.pass.cpp @ 222:81f6424ef0e3 llvm-original

LLVM original branch
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sun, 18 Jul 2021 22:10:01 +0900
parents 79ff65ed7e25
children
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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// The Itanium ABI requires that _Unwind_Exception objects are "double-word
// aligned".

#include <unwind.h>

// EHABI  : 8-byte aligned
// itanium: largest supported alignment for the system
#if defined(_LIBUNWIND_ARM_EHABI)
static_assert(alignof(_Unwind_Control_Block) == 8,
              "_Unwind_Control_Block must be double-word aligned");
#else
struct MaxAligned {} __attribute__((__aligned__));
static_assert(alignof(_Unwind_Exception) == alignof(MaxAligned),
              "_Unwind_Exception must be maximally aligned");
#endif