60fe1f59d0
We should arguably have always been doing that. The state of libunwind is quite sad, so this commit adds several XFAILs to make the CI pass. We need to investigate why so many tests are not passing in some configurations, but I'll defer that to folks who actually work on libunwind for lack of bandwidth. Differential Revision: https://reviews.llvm.org/D110872
53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// Ensure that the unwinder can cope with the signal handler.
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// REQUIRES: linux && (target={{aarch64-.+}} || target={{x86_64-.+}})
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// TODO: Investigate these failures
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// XFAIL: asan, tsan, ubsan
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// TODO: Investigate this failure
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// XFAIL: 32bits-on-64bits
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#include <assert.h>
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#include <dlfcn.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <unwind.h>
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_Unwind_Reason_Code frame_handler(struct _Unwind_Context* ctx, void* arg) {
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(void)arg;
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Dl_info info = { 0, 0, 0, 0 };
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// Unwind util the main is reached, above frames depend on the platform and
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// architecture.
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if (dladdr(reinterpret_cast<void *>(_Unwind_GetIP(ctx)), &info) &&
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info.dli_sname && !strcmp("main", info.dli_sname)) {
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_Exit(0);
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}
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return _URC_NO_REASON;
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}
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void signal_handler(int signum) {
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(void)signum;
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_Unwind_Backtrace(frame_handler, NULL);
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_Exit(-1);
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}
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int main(int, char**) {
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signal(SIGUSR1, signal_handler);
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kill(getpid(), SIGUSR1);
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return -2;
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}
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