// Copyright Antony Polukhin, 2016-2026.

//

// Distributed under the Boost Software License, Version 1.0. (See

// accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#include <boost/config.hpp>

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

//[getting_started_class_traced

#include <boost/stacktrace.hpp>

#include <boost/exception/all.hpp>

typedef boost::error_info<struct tag_stacktrace, boost::stacktrace::stacktrace> traced;

//]

//[getting_started_class_with_trace

template <class E>

void throw_with_trace(const E& e) {

throw boost::enable_error_info(e)

<< traced(boost::stacktrace::stacktrace());

}

//]

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

BOOST_NOINLINE void oops(int i);

BOOST_NOINLINE void foo(int i);

BOOST_NOINLINE void bar(int i);

#include <stdexcept>

BOOST_NOINLINE void oops(int i) {

//[getting_started_throwing_with_trace

if (i >= 4)

throw_with_trace(std::out_of_range("'i' must be less than 4 in oops()"));

if (i <= 0)

throw_with_trace(std::logic_error("'i' must be greater than zero in oops()"));

//]

foo(i);

std::exit(1);

}

#include <boost/array.hpp>

BOOST_NOINLINE void bar(int i) {

boost::array<int, 5> a = {{0, 0, 0, 0, 0}};

if (i < 5) {

if (i >= 0) {

foo(a[i]);

} else {

oops(i);

}

}

std::exit(2);

}

BOOST_NOINLINE void foo(int i) {

bar(--i);

}

#include <iostream>

int main() {

//[getting_started_catching_trace

try {

foo(5); // testing assert handler

} catch (const std::exception& e) {

std::cerr << e.what() << '\n';

const boost::stacktrace::stacktrace* st = boost::get_error_info<traced>(e);

if (st) {

std::cerr << *st << '\n'; /*<-*/ return 0; /*->*/

} /*<-*/ return 3; /*->*/

}

//]

return 5;

}