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 28 template <typename T> 29 struct Stop; 30 31 template <typename R, typename... Args> 32 struct 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 46 static void forced_unwind() { 47 static _Unwind_Exception exc = {}; 48 _Unwind_ForcedUnwind(&exc, Stop<_Unwind_Stop_Fn>::stop, 0); 49 abort(); 50 } 51 52 static void test() noexcept { forced_unwind(); } 53 54 static void terminate() { exit(0); } 55 56 int main(int, char**) { 57 std::set_terminate(terminate); 58 try { 59 test(); 60 } catch (...) { 61 } 62 abort(); 63 } 64