libcxx/test/std/depr/exception.unexpected/set.unexpected/get_unexpected.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // REQUIRES: c++03 || c++11 || c++14
  10
  11 // test get_unexpected
  12
  13 #include <exception>
  14 #include <cassert>
  15 #include <cstdlib>
  16
  17 #include "test_macros.h"
  18
  19 void f1() {}
  20 void f2() {}
  21
  22 void f3()
  23 {
  24     std::exit(0);
  25 }
  26
  27 int main(int, char**)
  28 {
  29
  30     std::unexpected_handler old = std::get_unexpected();
  31     // verify there is a previous unexpected handler
  32     assert(old);
  33     std::set_unexpected(f1);
  34     assert(std::get_unexpected() == f1);
  35     // verify f1 was replace with f2
  36     std::set_unexpected(f2);
  37     assert(std::get_unexpected() == f2);
  38     // verify calling original unexpected handler calls terminate
  39     std::set_terminate(f3);
  40     (*old)();
  41     assert(0);
  42
  43   return 0;
  44 }