exception_object_alignment.pass.cpp (956B)
1 //===---------------- exception_object_alignment.pass.cpp -----------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: libcxxabi-no-exceptions 11 12 // Check that the pointer __cxa_allocate_exception returns is aligned to the 13 // default alignment for the target architecture. 14 15 #include <cassert> 16 #include <cstdint> 17 #include <cxxabi.h> 18 #include <type_traits> 19 #include <__cxxabi_config.h> 20 21 struct S { 22 int a[4]; 23 } __attribute__((aligned)); 24 25 int main() { 26 #if !defined(_LIBCXXABI_ARM_EHABI) 27 void *p = __cxxabiv1::__cxa_allocate_exception(16); 28 auto i = reinterpret_cast<uintptr_t>(p); 29 auto a = std::alignment_of<S>::value; 30 assert(i % a == 0); 31 __cxxabiv1::__cxa_free_exception(p); 32 #endif 33 return 0; 34 }