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 // These tests fail on previously released dylibs, investigation needed. 14 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}} 15 // XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}} 16 17 #include <exception> 18 #include <stdlib.h> 19 #include <stdio.h> 20 #include <string.h> 21 #include <unwind.h> 22 #include <tuple> 23 #include <__cxxabi_config.h> 24 25 template <typename T> 26 struct Stop; 27 28 template <typename R, typename... Args> 29 struct Stop<R (*)(Args...)> { 30 // The third argument of _Unwind_Stop_Fn is uint64_t in Itanium C++ ABI/LLVM 31 // libunwind while _Unwind_Exception_Class in libgcc. 32 typedef typename std::tuple_element<2, std::tuple<Args...>>::type type; 33 34 static _Unwind_Reason_Code stop(int, _Unwind_Action actions, type, 35 struct _Unwind_Exception*, 36 struct _Unwind_Context*, void*) { 37 if (actions & _UA_END_OF_STACK) 38 abort(); 39 return _URC_NO_REASON; 40 } 41 }; 42 43 static void forced_unwind() { 44 _Unwind_Exception* exc = new _Unwind_Exception; 45 memset(&exc->exception_class, 0, sizeof(exc->exception_class)); 46 exc->exception_cleanup = 0; 47 _Unwind_ForcedUnwind(exc, Stop<_Unwind_Stop_Fn>::stop, 0); 48 abort(); 49 } 50 51 static void test() noexcept { forced_unwind(); } 52 53 static void terminate() { exit(0); } 54 55 int main(int, char**) { 56 std::set_terminate(terminate); 57 try { 58 test(); 59 } catch (...) { 60 } 61 abort(); 62 } 63