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/* Copyright (c) 2014-2025. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include <csignal>
#include <cstring>
#include <simgrid/modelchecker.h>
#include <simgrid/s4u.hpp>
#include <xbt/log.h>
XBT_LOG_NEW_DEFAULT_CATEGORY(random_bug, "For this example");
enum class Behavior { ABORT, ASSERT, PRINTF, SEGV };
Behavior behavior;
/** A fake application with a bug occurring for some random values */
static void app()
{
int x = MC_random(0, 5);
int y = MC_random(0, 5);
XBT_DEBUG("got %d %d", x, y);
if (behavior == Behavior::ASSERT) {
MC_assert(x != 3 || y != 4);
} else if (behavior == Behavior::PRINTF) {
if (x == 3 && y == 4)
XBT_ERROR("Error reached");
} else if (behavior == Behavior::ABORT) {
if (x == 3 && y == 4)
abort();
} else if (behavior == Behavior::SEGV) {
if (x == 3 && y == 4)
raise(SIGSEGV); // Simulate a segfault without displeasing the static analyzers
} else {
DIE_IMPOSSIBLE;
}
}
/** Main function */
int main(int argc, char* argv[])
{
simgrid::s4u::Engine e(&argc, argv);
xbt_assert(argc == 3, "Usage: random-bug abort|assert|printf|segv <platformfile>");
if (strcmp(argv[1], "abort") == 0) {
XBT_INFO("Behavior: abort");
behavior = Behavior::ABORT;
} else if (strcmp(argv[1], "assert") == 0) {
XBT_INFO("Behavior: assert");
behavior = Behavior::ASSERT;
} else if (strcmp(argv[1], "printf") == 0) {
XBT_INFO("Behavior: printf");
behavior = Behavior::PRINTF;
} else if (strcmp(argv[1], "segv") == 0) {
XBT_INFO("Behavior: segv");
behavior = Behavior::SEGV;
} else {
xbt_die("Please use either 'abort', 'assert', 'printf', or 'segv' as first parameter,"
" to specify what to do when the error is found.");
}
e.load_platform(argv[2]);
e.host_by_name("Fafard")->add_actor("app", &app);
e.run();
}
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