ed61d6a466
The use_system_cxx_lib Lit feature was only used for back-deployment testing. However, one immense hole in that setup was that we didn't have a proper way to test Apple's own libc++ outside of back-deployment, which was embodied by the fact that we needed to define _LIBCPP_DISABLE_AVAILABILITY when testing (see change in libcxx/utils/libcxx/test/params.py). This led to the apple-system testing configuration not checking for availability markup, which is obviously quite bad since the library we ship actually has availability markup. Using stdlib=<VENDOR>-libc++ instead to encode back-deployment restrictions on tests is simpler and it makes it possible to naturally support tests such as availability markup checking even in the tip-of-trunk Apple-libc++ configuration. Differential Revision: https://reviews.llvm.org/D146366
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
//===----------------------------------------------------------------------===//
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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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// Forced unwinding causes std::terminate when going through noexcept.
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// UNSUPPORTED: no-exceptions, c++03
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// These tests fail on previously released dylibs, investigation needed.
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// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
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// XFAIL: stdlib=apple-libc++ && target={{.+}}-apple-macosx{{11.0|12.0}}
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#include <exception>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unwind.h>
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#include <tuple>
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#include <__cxxabi_config.h>
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template <typename T>
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struct Stop;
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template <typename R, typename... Args>
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struct Stop<R (*)(Args...)> {
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// The third argument of _Unwind_Stop_Fn is uint64_t in Itanium C++ ABI/LLVM
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// libunwind while _Unwind_Exception_Class in libgcc.
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typedef typename std::tuple_element<2, std::tuple<Args...>>::type type;
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static _Unwind_Reason_Code stop(int, _Unwind_Action actions, type,
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struct _Unwind_Exception*,
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struct _Unwind_Context*, void*) {
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if (actions & _UA_END_OF_STACK)
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abort();
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return _URC_NO_REASON;
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}
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};
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static void forced_unwind() {
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_Unwind_Exception* exc = new _Unwind_Exception;
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memset(&exc->exception_class, 0, sizeof(exc->exception_class));
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exc->exception_cleanup = 0;
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_Unwind_ForcedUnwind(exc, Stop<_Unwind_Stop_Fn>::stop, 0);
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abort();
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}
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static void test() noexcept { forced_unwind(); }
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static void terminate() { exit(0); }
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int main(int, char**) {
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std::set_terminate(terminate);
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try {
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test();
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} catch (...) {
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}
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abort();
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}
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