ceph/src/boost/libs/stacktrace/example/assert_handler.cpp

   1 // Copyright Antony Polukhin, 2016-2020.
   2 //
   3 // Distributed under the Boost Software License, Version 1.0. (See
   4 // accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6
   7 #define BOOST_ENABLE_ASSERT_HANDLER
   8
   9 #include <cstdlib> // std::exit
  10 #include <boost/array.hpp>
  11 BOOST_NOINLINE void foo(int i);
  12 BOOST_NOINLINE void bar(int i);
  13
  14 BOOST_NOINLINE void bar(int i) {
  15     boost::array<int, 5> a = {{101, 100, 123, 23, 32}};
  16     if (i >= 0) {
  17         foo(a[i]);
  18     } else {
  19         std::exit(1);
  20     }
  21 }
  22
  23 BOOST_NOINLINE void foo(int i) {
  24     bar(--i);
  25 }
  26
  27 //[getting_started_assert_handlers
  28
  29 // BOOST_ENABLE_ASSERT_DEBUG_HANDLER is defined for the whole project
  30 #include <stdexcept>    // std::logic_error
  31 #include <iostream>     // std::cerr
  32 #include <boost/stacktrace.hpp>
  33
  34 namespace boost {
  35     inline void assertion_failed_msg(char const* expr, char const* msg, char const* function, char const* /*file*/, long /*line*/) {
  36         std::cerr << "Expression '" << expr << "' is false in function '" << function << "': " << (msg ? msg : "<...>") << ".\n"
  37             << "Backtrace:\n" << boost::stacktrace::stacktrace() << '\n';
  38         /*<-*/ std::exit(0); /*->*/
  39         /*=std::abort();*/
  40     }
  41
  42     inline void assertion_failed(char const* expr, char const* function, char const* file, long line) {
  43         ::boost::assertion_failed_msg(expr, 0 /*nullptr*/, function, file, line);
  44     }
  45 } // namespace boost
  46 //]
  47
  48
  49 int main() {
  50     foo(5);
  51
  52     return 2;
  53 }
  54
  55