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https://github.com/opnsense/src.git
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df4b8eff7b
This adds a basic test that __cxa_atexit works, and also adds some tests for __cxa_atexit handlers registered in the middle of __cxa_finalize. PR: 285870 (cherry picked from commit ee9ce1078c596f5719f312feedd616ab0fb41dc9)
67 lines
1.2 KiB
C++
67 lines
1.2 KiB
C++
/*
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* Copyright (C) 2025 Kyle Evans <kevans@FreeBSD.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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*/
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#include <unistd.h>
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static int exit_code = -1;
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static bool fatal_atexit;
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extern "C" {
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void set_fatal_atexit(bool);
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void set_exit_code(int);
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}
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void
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set_fatal_atexit(bool fexit)
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{
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fatal_atexit = fexit;
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}
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void
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set_exit_code(int code)
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{
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exit_code = code;
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}
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struct other_object {
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~other_object() {
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/*
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* In previous versions of our __cxa_atexit handling, we would
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* never actually execute this handler because it's added during
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* ~object() below; __cxa_finalize would never revisit it. We
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* will allow the caller to configure us to exit with a certain
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* exit code so that it can run us twice: once to ensure we
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* don't crash at the end, and again to make sure the handler
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* actually ran.
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*/
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if (exit_code != -1)
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_exit(exit_code);
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}
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};
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void
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create_staticobj()
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{
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static other_object obj;
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}
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struct object {
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~object() {
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/*
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* If we're doing the fatal_atexit behavior (i.e., create an
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* object that will add its own dtor for __cxa_finalize), then
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* we don't exit here.
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*/
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if (fatal_atexit)
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create_staticobj();
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else if (exit_code != -1)
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_exit(exit_code);
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}
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};
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static object obj;
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