1//===----------------------------------------------------------------------===//
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// Forced unwinding causes std::terminate when going through noexcept.
10
11// UNSUPPORTED: no-exceptions, c++03
12
13// VE only supports SjLj and doesn't provide _Unwind_ForcedUnwind.
14// UNSUPPORTED: target={{ve-.*}}
15
16// These tests fail on previously released dylibs, investigation needed.
17// XFAIL: stdlib=system && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
18// XFAIL: stdlib=system && target={{.+}}-apple-macosx{{11.0|12.0}}
19
20#include <exception>
21#include <stdlib.h>
22#include <stdio.h>
23#include <string.h>
24#include <unwind.h>
25#include <tuple>
26#include <__cxxabi_config.h>
27
28template <typename T>
29struct Stop;
30
31template <typename R, typename... Args>
32struct Stop<R (*)(Args...)> {
33 // The third argument of _Unwind_Stop_Fn is uint64_t in Itanium C++ ABI/LLVM
34 // libunwind while _Unwind_Exception_Class in libgcc.
35 typedef typename std::tuple_element<2, std::tuple<Args...>>::type type;
36
37 static _Unwind_Reason_Code stop(int, _Unwind_Action actions, type,
38 struct _Unwind_Exception*,
39 struct _Unwind_Context*, void*) {
40 if (actions & _UA_END_OF_STACK)
41 abort();
42 return _URC_NO_REASON;
43 }
44};
45
46static void forced_unwind() {
47 static _Unwind_Exception exc = {};
48 _Unwind_ForcedUnwind(&exc, Stop<_Unwind_Stop_Fn>::stop, 0);
49 abort();
50}
51
52static void test() noexcept { forced_unwind(); }
53
54static void terminate() { exit(status: 0); }
55
56int main(int, char**) {
57 std::set_terminate(terminate);
58 try {
59 test();
60 } catch (...) {
61 }
62 abort();
63}
64

source code of libcxxabi/test/forced_unwind2.pass.cpp