libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.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 // UNSUPPORTED: no-exceptions
  10 // <exception>
  11
  12 // template<class E> exception_ptr make_exception_ptr(E e);
  13
  14 #include <exception>
  15 #include <cassert>
  16
  17 #include "test_macros.h"
  18
  19 struct A
  20 {
  21     static int constructed;
  22     int data_;
  23
  24     A(int data = 0) : data_(data) {++constructed;}
  25     ~A() {--constructed;}
  26     A(const A& a) : data_(a.data_) {++constructed;}
  27 };
  28
  29 int A::constructed = 0;
  30
  31 int main(int, char**)
  32 {
  33     {
  34         std::exception_ptr p = std::make_exception_ptr(A(5));
  35         try
  36         {
  37             std::rethrow_exception(p);
  38             assert(false);
  39         }
  40         catch (const A& a)
  41         {
  42 #ifndef TEST_ABI_MICROSOFT
  43             assert(A::constructed == 1);
  44 #else
  45             // On Windows exception_ptr copies the exception
  46             assert(A::constructed == 2);
  47 #endif
  48             assert(p != nullptr);
  49             p = nullptr;
  50             assert(p == nullptr);
  51             assert(a.data_ == 5);
  52             assert(A::constructed == 1);
  53         }
  54         assert(A::constructed == 0);
  55     }
  56     assert(A::constructed == 0);
  57
  58   return 0;
  59 }