60ba1fefab
Before this patch, we could only link against the back-deployment libc++abi dylib. This patch allows linking against the just-built libc++abi, but running against the back-deployment one -- just like we do for libc++. Also, add XFAIL markup to flag expected errors. Differential Revision: https://reviews.llvm.org/D91069
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
//===---------------- exception_object_alignment.pass.cpp -----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: no-exceptions
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// The situation for the alignment of exception objects is badly messed up
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// before macOS 10.14. The test fails on macOS 10.9 to 10.12, passes on macOS
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// 10.13 (no investigation done), and passes afterwards. Just mark all the OSes
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// before 10.14 as unsupported.
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// UNSUPPORTED: with_system_cxx_lib=macosx10.13
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// UNSUPPORTED: with_system_cxx_lib=macosx10.12
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// UNSUPPORTED: with_system_cxx_lib=macosx10.11
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// UNSUPPORTED: with_system_cxx_lib=macosx10.10
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// UNSUPPORTED: with_system_cxx_lib=macosx10.9
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// Check that the pointer __cxa_allocate_exception returns is aligned to the
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// default alignment for the target architecture.
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#include <cassert>
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#include <cstdint>
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#include <cxxabi.h>
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#include <type_traits>
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#include <__cxxabi_config.h>
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struct S {
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int a[4];
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} __attribute__((aligned));
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int main(int, char**) {
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#if !defined(_LIBCXXABI_ARM_EHABI)
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void *p = __cxxabiv1::__cxa_allocate_exception(16);
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auto i = reinterpret_cast<uintptr_t>(p);
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auto a = std::alignment_of<S>::value;
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assert(i % a == 0);
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__cxxabiv1::__cxa_free_exception(p);
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#endif
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return 0;
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}
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