| 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 | // <list> |
| 11 | |
| 12 | // void push_front(const value_type& x); |
| 13 | |
| 14 | #include <list> |
| 15 | #include <cassert> |
| 16 | #include <exception> |
| 17 | |
| 18 | #include "test_macros.h" |
| 19 | |
| 20 | // Flag that makes the copy constructor for CMyClass throw an exception |
| 21 | static bool gCopyConstructorShouldThrow = false; |
| 22 | |
| 23 | class CMyClass { |
| 24 | public: |
| 25 | CMyClass(); |
| 26 | |
| 27 | public: |
| 28 | CMyClass(const CMyClass& iOther); |
| 29 | |
| 30 | public: |
| 31 | ~CMyClass(); |
| 32 | |
| 33 | private: |
| 34 | int fMagicValue; |
| 35 | |
| 36 | private: |
| 37 | static int kStartedConstructionMagicValue; |
| 38 | |
| 39 | private: |
| 40 | static int kFinishedConstructionMagicValue; |
| 41 | }; |
| 42 | |
| 43 | // Value for fMagicValue when the constructor has started running, but not yet finished |
| 44 | int CMyClass::kStartedConstructionMagicValue = 0; |
| 45 | // Value for fMagicValue when the constructor has finished running |
| 46 | int CMyClass::kFinishedConstructionMagicValue = 12345; |
| 47 | |
| 48 | CMyClass::CMyClass() : fMagicValue(kStartedConstructionMagicValue) { |
| 49 | // Signal that the constructor has finished running |
| 50 | fMagicValue = kFinishedConstructionMagicValue; |
| 51 | } |
| 52 | |
| 53 | CMyClass::CMyClass(const CMyClass& /*iOther*/) : fMagicValue(kStartedConstructionMagicValue) { |
| 54 | // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue |
| 55 | if (gCopyConstructorShouldThrow) { |
| 56 | throw std::exception(); |
| 57 | } |
| 58 | // Signal that the constructor has finished running |
| 59 | fMagicValue = kFinishedConstructionMagicValue; |
| 60 | } |
| 61 | |
| 62 | CMyClass::~CMyClass() { |
| 63 | // Only instances for which the constructor has finished running should be destructed |
| 64 | assert(fMagicValue == kFinishedConstructionMagicValue); |
| 65 | } |
| 66 | |
| 67 | int main(int, char**) { |
| 68 | CMyClass instance; |
| 69 | std::list<CMyClass> vec; |
| 70 | |
| 71 | vec.push_front(x: instance); |
| 72 | |
| 73 | gCopyConstructorShouldThrow = true; |
| 74 | try { |
| 75 | vec.push_front(x: instance); |
| 76 | } catch (...) { |
| 77 | } |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 |