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