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98 lines
2.3 KiB
C++
98 lines
2.3 KiB
C++
// Copyright Antony Polukhin, 2016.
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/config.hpp>
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#if defined(BOOST_NO_CXX11_NOEXCEPT) || defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) || defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
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int main(){}
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#else
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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//[getting_started_class_traced
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#include <boost/stacktrace.hpp>
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struct traced {
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const boost::stacktrace::stacktrace trace;
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virtual const char* what() const noexcept = 0;
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virtual ~traced(){}
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};
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//]
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//[getting_started_class_with_trace
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template <class Exception>
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struct with_trace : public Exception, public traced {
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template <class... Args>
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with_trace(Args&&... args)
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: Exception(std::forward<Args>(args)...)
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{}
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const char* what() const noexcept {
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return Exception::what();
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}
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};
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//]
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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BOOST_NOINLINE void oops(int i);
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BOOST_NOINLINE void foo(int i);
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BOOST_NOINLINE void bar(int i);
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#include <stdexcept>
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BOOST_NOINLINE void oops(int i) {
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//[getting_started_throwing_with_trace
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if (i >= 4)
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throw with_trace<std::out_of_range>("'i' must be less than 4 in oops()");
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if (i <= 0)
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throw with_trace<std::logic_error>("'i' must not be greater than zero in oops()");
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//]
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foo(i);
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std::exit(1);
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}
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#include <boost/array.hpp>
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BOOST_NOINLINE void bar(int i) {
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boost::array<int, 5> a = {{0, 0, 0, 0, 0}};
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if (i < 5) {
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if (i >= 0) {
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foo(a[i]);
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} else {
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oops(i);
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}
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}
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std::exit(2);
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}
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BOOST_NOINLINE void foo(int i) {
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bar(--i);
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}
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#include <iostream>
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int main() {
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//[getting_started_catching_trace
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try {
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foo(5); // testing assert handler
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} catch (const traced& e) {
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std::cerr << e.what() << '\n';
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if (e.trace) {
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std::cerr << "Backtrace:\n" << e.trace << '\n';
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} /*<-*/ std::exit(0); /*->*/
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} catch (const std::exception& e) {
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std::cerr << e.what() << '\n'; /*<-*/ std::exit(3); /*->*/
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}
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//]
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return 5;
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}
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#endif
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