mirror of
https://github.com/mstorsjo/llvm-mingw
synced 2026-06-21 14:01:00 +00:00
Martin Storsjö
f3b6f0fa45
std::chrono_literals require C++14. This simplifies building hello-exception on macOS, where current Apple Clang still default to C++11.
103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/*
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* Copyright (c) 2018 Martin Storsjo
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*
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* This file is part of llvm-mingw.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <exception>
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#include <stdio.h>
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#include <string.h>
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#include <thread>
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#include <chrono>
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class RecurseClass {
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public:
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RecurseClass(int v) : val(v) {
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fprintf(stderr, "ctor %d\n", val);
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fflush(stderr);
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}
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~RecurseClass() {
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fprintf(stderr, "dtor %d\n", val);
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fflush(stderr);
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}
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private:
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int val;
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};
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bool crash = false;
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bool breakpoint = false;
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bool noop = false;
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bool do_wait = false;
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void done() {
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}
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void recurse(int val) {
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RecurseClass obj(val);
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if (val == 0) {
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if (crash)
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*(volatile int*)NULL = 0x42;
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#ifdef _WIN32
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else if (breakpoint)
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__debugbreak();
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#endif
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else if (noop)
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done();
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else
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throw std::exception();
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} else if (val == 5) {
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try {
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recurse(val - 1);
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} catch (std::exception& e) {
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fprintf(stderr, "caught exception at %d\n", val);
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fflush(stderr);
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}
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} else {
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recurse(val - 1);
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}
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fprintf(stderr, "finishing function recurse %d\n", val);
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fflush(stderr);
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}
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int main(int argc, char* argv[]) {
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for (int i = 1; i < argc; i++) {
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/* These modes are useful for testing backtraces in a debugger. */
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if (!strcmp(argv[i], "-crash")) {
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crash = true;
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fprintf(stderr, "Crashing instead of throwing an exception\n");
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} else if (!strcmp(argv[i], "-breakpoint")) {
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#ifdef _WIN32
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breakpoint = true;
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fprintf(stderr, "Triggering breakpoint instead of throwing an exception\n");
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#else
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fprintf(stderr, "Programmatic breakpoints not supported\n");
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#endif
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} else if (!strcmp(argv[i], "-noop")) {
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noop = true;
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fprintf(stderr, "Calling the function 'done' when recursion stops\n");
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} else if (!strcmp(argv[i], "-wait")) {
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do_wait = true;
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fprintf(stderr, "Waiting before exiting\n");
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}
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}
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recurse(10);
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if (do_wait) {
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fprintf(stderr, "Waiting\n");
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std::this_thread::sleep_for(std::chrono::seconds(10));
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fprintf(stderr, "Exiting\n");
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}
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return 0;
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}
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