1 //===---------------- exception_object_alignment.pass.cpp -----------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: no-exceptions 10 11 // Check that the pointer __cxa_allocate_exception returns is aligned to the 12 // default alignment for the target architecture. 13 14 #include <cassert> 15 #include <cstdint> 16 #include <cxxabi.h> 17 #include <type_traits> 18 #include <__cxxabi_config.h> 19 20 struct S { 21 int a[4]; 22 } __attribute__((aligned)); 23 main(int,char **)24int main(int, char**) { 25 #if !defined(_LIBCXXABI_ARM_EHABI) 26 void *p = __cxxabiv1::__cxa_allocate_exception(16); 27 auto i = reinterpret_cast<uintptr_t>(p); 28 auto a = std::alignment_of<S>::value; 29 assert(i % a == 0); 30 __cxxabiv1::__cxa_free_exception(p); 31 #endif 32 return 0; 33 } 34