1*504bc07dSLouis Dionne // -*- C++ -*- 2*504bc07dSLouis Dionne //===----------------------------------------------------------------------===// 3*504bc07dSLouis Dionne // 4*504bc07dSLouis Dionne // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5*504bc07dSLouis Dionne // See https://llvm.org/LICENSE.txt for license information. 6*504bc07dSLouis Dionne // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7*504bc07dSLouis Dionne // 8*504bc07dSLouis Dionne //===----------------------------------------------------------------------===// 9*504bc07dSLouis Dionne 10*504bc07dSLouis Dionne // The Itanium ABI requires that _Unwind_Exception objects are "double-word 11*504bc07dSLouis Dionne // aligned". 12*504bc07dSLouis Dionne 13*504bc07dSLouis Dionne #include <unwind.h> 14*504bc07dSLouis Dionne 15*504bc07dSLouis Dionne // EHABI : 8-byte aligned 16*504bc07dSLouis Dionne // itanium: largest supported alignment for the system 17*504bc07dSLouis Dionne #if defined(_LIBUNWIND_ARM_EHABI) 18*504bc07dSLouis Dionne static_assert(alignof(_Unwind_Control_Block) == 8, 19*504bc07dSLouis Dionne "_Unwind_Control_Block must be double-word aligned"); 20*504bc07dSLouis Dionne #else 21*504bc07dSLouis Dionne struct MaxAligned {} __attribute__((__aligned__)); 22*504bc07dSLouis Dionne static_assert(alignof(_Unwind_Exception) == alignof(MaxAligned), 23*504bc07dSLouis Dionne "_Unwind_Exception must be maximally aligned"); 24*504bc07dSLouis Dionne #endif 25