mirror of
https://github.com/llvm/llvm-project.git
synced 2025-05-02 22:16:06 +00:00
ed61d6a466
The use_system_cxx_lib Lit feature was only used for back-deployment testing. However, one immense hole in that setup was that we didn't have a proper way to test Apple's own libc++ outside of back-deployment, which was embodied by the fact that we needed to define _LIBCPP_DISABLE_AVAILABILITY when testing (see change in libcxx/utils/libcxx/test/params.py). This led to the apple-system testing configuration not checking for availability markup, which is obviously quite bad since the library we ship actually has availability markup. Using stdlib=<VENDOR>-libc++ instead to encode back-deployment restrictions on tests is simpler and it makes it possible to naturally support tests such as availability markup checking even in the tip-of-trunk Apple-libc++ configuration. Differential Revision: https://reviews.llvm.org/D146366
83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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: stdlib=apple-libc++ && target={{.+}}-apple-macosx10.{{9|10|11|12|13|14|15}}
|
|
// XFAIL: stdlib=apple-libc++ && 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;
|
|
}
|