forked from OSchip/llvm-project
82 lines
2.1 KiB
C++
82 lines
2.1 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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// _Unwind_ForcedUnwind raised exception can be caught by catch (...) and be
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// rethrown. If not rethrown, exception_cleanup will be called.
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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: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
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#include <stdlib.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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static int bits = 0;
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struct C {
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int bit;
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C(int b) : bit(b) {}
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~C() { bits |= bit; }
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};
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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 cleanup(_Unwind_Reason_Code, struct _Unwind_Exception* exc) {
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bits |= 8;
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delete exc;
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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 = cleanup;
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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() {
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try {
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C four(4);
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try {
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C one(1);
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forced_unwind();
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} catch (...) {
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bits |= 2;
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throw;
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}
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} catch (int) {
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} catch (...) {
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// __cxa_end_catch calls cleanup.
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}
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}
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int main(int, char**) {
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test();
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return bits != 15;
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}
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