1 // RUN: %clang_cc1 -fcxx-exceptions -fexceptions -verify -std=c++11 %s
2 struct A { };
3 struct B { };
4 struct C { };
5
6 // Destructor
7 struct X0 {
8 virtual ~X0() throw(A); // expected-note{{overridden virtual function is here}}
9 };
10 struct X1 {
11 virtual ~X1() throw(B); // expected-note{{overridden virtual function is here}}
12 };
13 struct X2 : public X0, public X1 { }; // expected-error 2{{exception specification of overriding function is more lax than base version}}
14
15 // Copy-assignment operator.
16 struct CA0 {
17 CA0 &operator=(const CA0&) throw(A);
18 };
19 struct CA1 {
20 CA1 &operator=(const CA1&) throw(B);
21 };
22 struct CA2 : CA0, CA1 { };
23
test_CA()24 void test_CA() {
25 CA2 &(CA2::*captr1)(const CA2&) throw(A, B) = &CA2::operator=;
26 CA2 &(CA2::*captr2)(const CA2&) throw(A, B, C) = &CA2::operator=;
27 CA2 &(CA2::*captr3)(const CA2&) throw(A) = &CA2::operator=; // expected-error{{target exception specification is not superset of source}}
28 CA2 &(CA2::*captr4)(const CA2&) throw(B) = &CA2::operator=; // expected-error{{target exception specification is not superset of source}}
29 }
30
31 // In-class member initializers.
32 struct IC0 {
33 int inClassInit = 0;
34 };
35 struct IC1 {
36 int inClassInit = (throw B(), 0);
37 };
38 // FIXME: the exception specification on the default constructor is wrong:
39 // we cannot currently compute the set of thrown types.
40 static_assert(noexcept(IC0()), "IC0() does not throw");
41 static_assert(!noexcept(IC1()), "IC1() throws");
42
43 namespace PR13381 {
44 struct NoThrowMove {
45 NoThrowMove(const NoThrowMove &);
46 NoThrowMove(NoThrowMove &&) noexcept;
47 NoThrowMove &operator=(const NoThrowMove &) const;
48 NoThrowMove &operator=(NoThrowMove &&) const noexcept;
49 };
50 struct NoThrowMoveOnly {
51 NoThrowMoveOnly(NoThrowMoveOnly &&) noexcept;
52 NoThrowMoveOnly &operator=(NoThrowMoveOnly &&) noexcept;
53 };
54 struct X {
55 const NoThrowMove a;
56 NoThrowMoveOnly b;
57
58 static X val();
59 static X &ref();
60 };
61 // These both perform a move, but that copy might throw, because it calls
62 // NoThrowMove's copy constructor (because PR13381::a is const).
63 static_assert(!noexcept(X(X::val())), "");
64 static_assert(!noexcept(X::ref() = X::val()), "");
65 }
66
67 namespace PR14141 {
68 // Part of DR1351: the implicit exception-specification is noexcept(false) if
69 // the set of potential exceptions of the special member function contains
70 // "any". Hence it is compatible with noexcept(false).
71 struct ThrowingBase {
72 ThrowingBase() noexcept(false);
73 ThrowingBase(const ThrowingBase&) noexcept(false);
74 ThrowingBase(ThrowingBase&&) noexcept(false);
75 ThrowingBase &operator=(const ThrowingBase&) noexcept(false);
76 ThrowingBase &operator=(ThrowingBase&&) noexcept(false);
77 ~ThrowingBase() noexcept(false);
78 };
79 struct Derived : ThrowingBase {
80 Derived() noexcept(false) = default;
81 Derived(const Derived&) noexcept(false) = default;
82 Derived(Derived&&) noexcept(false) = default;
83 Derived &operator=(const Derived&) noexcept(false) = default;
84 Derived &operator=(Derived&&) noexcept(false) = default;
85 ~Derived() noexcept(false) = default;
86 } d1;
87 static_assert(!noexcept(Derived()), "");
88 static_assert(!noexcept(Derived(static_cast<Derived&&>(d1))), "");
89 static_assert(!noexcept(Derived(d1)), "");
90 static_assert(!noexcept(d1 = static_cast<Derived&&>(d1)), "");
91 static_assert(!noexcept(d1 = d1), "");
92 struct Derived2 : ThrowingBase {
93 Derived2() = default;
94 Derived2(const Derived2&) = default;
95 Derived2(Derived2&&) = default;
96 Derived2 &operator=(const Derived2&) = default;
97 Derived2 &operator=(Derived2&&) = default;
98 ~Derived2() = default;
99 } d2;
100 static_assert(!noexcept(Derived2()), "");
101 static_assert(!noexcept(Derived2(static_cast<Derived2&&>(d2))), "");
102 static_assert(!noexcept(Derived2(d2)), "");
103 static_assert(!noexcept(d2 = static_cast<Derived2&&>(d2)), "");
104 static_assert(!noexcept(d2 = d2), "");
105 struct Derived3 : ThrowingBase {
106 Derived3() noexcept(true) = default;
107 Derived3(const Derived3&) noexcept(true) = default;
108 Derived3(Derived3&&) noexcept(true) = default;
109 Derived3 &operator=(const Derived3&) noexcept(true) = default;
110 Derived3 &operator=(Derived3&&) noexcept(true) = default;
111 ~Derived3() noexcept(true) = default;
112 } d3;
113 static_assert(noexcept(Derived3(), Derived3(Derived3()), Derived3(d3), d3 = Derived3(), d3 = d3), "");
114 }
115
116 namespace rdar13017229 {
117 struct Base {
~Baserdar13017229::Base118 virtual ~Base() {}
119 };
120
121 struct Derived : Base {
122 virtual ~Derived();
123 Typo foo(); // expected-error{{unknown type name 'Typo'}}
124 };
125 }
126
127 namespace InhCtor {
128 template<int> struct X {};
129 struct Base {
130 Base(X<0>) noexcept(true);
131 Base(X<1>) noexcept(false);
132 Base(X<2>) throw(X<2>);
133 template<typename T> Base(T) throw(T);
134 };
135 template<typename T> struct Throw {
136 Throw() throw(T);
137 };
138 struct Derived1 : Base, X<5> {
139 using Base::Base;
140 int n;
141 };
142 struct Derived2 : Base, Throw<X<3>> {
143 using Base::Base;
144 };
145 struct Derived3 : Base {
146 using Base::Base;
147 Throw<X<4>> x;
148 };
149 static_assert(noexcept(Derived1(X<0>())), "");
150 static_assert(!noexcept(Derived1(X<1>())), "");
151 static_assert(!noexcept(Derived1(X<2>())), "");
152 static_assert(!noexcept(Derived2(X<0>())), "");
153 static_assert(!noexcept(Derived3(X<0>())), "");
154 }
155