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main.cpp
69 lines (63 loc) · 1.42 KB
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main.cpp
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#include <cstdlib>
#include <cstdio>
#include <ctime>
#include <exception>
#include <stdexcept>
#include <execinfo.h>
#include <signal.h>
#include <unistd.h>
void printStacktrace()
{
void *array[20];
size_t size = backtrace(array, sizeof(array) / sizeof(array[0]));
backtrace_symbols_fd(array, size, STDERR_FILENO);
}
void signalHandler(int sig)
{
std::fprintf(stderr, "Error: signal %d\n", sig);
printStacktrace();
std::abort();
}
void terminateHandler()
{
std::exception_ptr exptr = std::current_exception();
if (exptr != 0)
{
// the only useful feature of std::exception_ptr is that it can be rethrown...
try
{
std::rethrow_exception(exptr);
}
catch (std::exception &ex)
{
std::fprintf(stderr, "Terminated due to exception: %s\n", ex.what());
}
catch (...)
{
std::fprintf(stderr, "Terminated due to unknown exception\n");
}
}
else
{
std::fprintf(stderr, "Terminated due to unknown reason :(\n");
}
printStacktrace();
std::abort();
}
int main()
{
signal(SIGSEGV, signalHandler);
std::set_terminate(terminateHandler);
srand(time(NULL));
if (rand() % 2)
{
// segfault
int *bad = NULL;
std::fprintf(stderr, "%d", *bad);
}
else
{
// exception
throw std::runtime_error("Hello, world!");
}
}