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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// _Unwind_ForcedUnwind raised exception can be caught by catch (...) and be
// rethrown. If not rethrown, exception_cleanup will be called.
// UNSUPPORTED: no-exceptions, c++03
// These tests fail on previously released dylibs, investigation needed.
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
// XFAIL: use_system_cxx_lib && target={{.+}}-apple-macosx{{11.0|12.0}}
#include <stdlib.h>
#include <string.h>
#include <unwind.h>
#include <tuple>
#include <__cxxabi_config.h>
static int bits = 0;
struct C {
int bit;
C(int b) : bit(b) {}
~C() { bits |= bit; }
};
template <typename T>
struct Stop;
template <typename R, typename... Args>
struct Stop<R (*)(Args...)> {
// The third argument of _Unwind_Stop_Fn is uint64_t in Itanium C++ ABI/LLVM
// libunwind while _Unwind_Exception_Class in libgcc.
typedef typename std::tuple_element<2, std::tuple<Args...>>::type type;
static _Unwind_Reason_Code stop(int, _Unwind_Action actions, type,
struct _Unwind_Exception*,
struct _Unwind_Context*, void*) {
if (actions & _UA_END_OF_STACK)
abort();
return _URC_NO_REASON;
}
};
static void cleanup(_Unwind_Reason_Code, struct _Unwind_Exception* exc) {
bits |= 8;
delete exc;
}
static void forced_unwind() {
_Unwind_Exception* exc = new _Unwind_Exception;
memset(&exc->exception_class, 0, sizeof(exc->exception_class));
exc->exception_cleanup = cleanup;
_Unwind_ForcedUnwind(exc, Stop<_Unwind_Stop_Fn>::stop, 0);
abort();
}
static void test() {
try {
C four(4);
try {
C one(1);
forced_unwind();
} catch (...) {
bits |= 2;
throw;
}
} catch (int) {
} catch (...) {
// __cxa_end_catch calls cleanup.
}
}
int main(int, char**) {
test();
return bits != 15;
}
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