Upstream version 10.39.225.0
[platform/framework/web/crosswalk.git] / src / third_party / libc++ / trunk / test / containers / sequences / vector / vector.modifiers / push_back_exception_safety.pass.cpp
1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <vector>
11
12 // void push_back(const value_type& x);
13
14 #include <vector>
15 #include <cassert>
16
17 #include "asan_testing.h"
18
19 // Flag that makes the copy constructor for CMyClass throw an exception
20 static bool gCopyConstructorShouldThow = false;
21
22
23 class CMyClass {
24     public: CMyClass(int tag);
25     public: CMyClass(const CMyClass& iOther);
26     public: ~CMyClass();
27
28     bool equal(const CMyClass &rhs) const
29         { return fTag == rhs.fTag && fMagicValue == rhs.fMagicValue; }
30     private:
31         int fMagicValue;
32         int fTag;
33         
34     private: static int kStartedConstructionMagicValue;
35     private: static int kFinishedConstructionMagicValue;
36 };
37
38 // Value for fMagicValue when the constructor has started running, but not yet finished
39 int CMyClass::kStartedConstructionMagicValue = 0;
40 // Value for fMagicValue when the constructor has finished running
41 int CMyClass::kFinishedConstructionMagicValue = 12345;
42
43 CMyClass::CMyClass(int tag) :
44     fMagicValue(kStartedConstructionMagicValue), fTag(tag)
45 {
46     // Signal that the constructor has finished running
47     fMagicValue = kFinishedConstructionMagicValue;
48 }
49
50 CMyClass::CMyClass(const CMyClass& iOther) :
51     fMagicValue(kStartedConstructionMagicValue), fTag(iOther.fTag)
52 {
53     // If requested, throw an exception _before_ setting fMagicValue to kFinishedConstructionMagicValue
54     if (gCopyConstructorShouldThow) {
55         throw std::exception();
56     }
57     // Signal that the constructor has finished running
58     fMagicValue = kFinishedConstructionMagicValue;
59 }
60
61 CMyClass::~CMyClass() {
62     // Only instances for which the constructor has finished running should be destructed
63     assert(fMagicValue == kFinishedConstructionMagicValue);
64 }
65
66 bool operator==(const CMyClass &lhs, const CMyClass &rhs) { return lhs.equal(rhs); }
67
68 int main()
69 {
70     CMyClass instance(42);
71     std::vector<CMyClass> vec;
72
73     vec.push_back(instance);
74     std::vector<CMyClass> vec2(vec);
75     assert(is_contiguous_container_asan_correct(vec)); 
76     assert(is_contiguous_container_asan_correct(vec2)); 
77
78     gCopyConstructorShouldThow = true;
79     try {
80         vec.push_back(instance);
81     }
82     catch (...) {
83         assert(vec==vec2);
84         assert(is_contiguous_container_asan_correct(vec)); 
85     }
86 }