libcxx/test/std/language.support/support.exception/except.nested/ctor_copy.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 // <exception>
  10
  11 // class nested_exception;
  12
  13 // nested_exception(const nested_exception&) throw() = default;
  14
  15 #include <exception>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19
  20 class A
  21 {
  22     int data_;
  23 public:
  24     explicit A(int data) : data_(data) {}
  25
  26     friend bool operator==(const A& x, const A& y) {return x.data_ == y.data_;}
  27 };
  28
  29 int main(int, char**)
  30 {
  31     {
  32         std::nested_exception e0;
  33         std::nested_exception e = e0;
  34         assert(e.nested_ptr() == nullptr);
  35     }
  36 #ifndef TEST_HAS_NO_EXCEPTIONS
  37     {
  38         try
  39         {
  40             throw A(2);
  41             assert(false);
  42         }
  43         catch (const A&)
  44         {
  45             std::nested_exception e0;
  46             std::nested_exception e = e0;
  47             assert(e.nested_ptr() != nullptr);
  48             try
  49             {
  50                 std::rethrow_exception(e.nested_ptr());
  51                 assert(false);
  52             }
  53             catch (const A& a)
  54             {
  55                 assert(a == A(2));
  56             }
  57         }
  58     }
  59 #endif
  60
  61   return 0;
  62 }