1 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
2 | |
3 | // This test concerns the identity of dependent types within the |
4 | // canonical type system. This corresponds to C++ [temp.type], which |
5 | // specifies type equivalence within a template. |
6 | // |
7 | // FIXME: template template parameters |
8 | |
9 | namespace N { |
10 | template<typename T> |
11 | struct X2 { |
12 | template<typename U> |
13 | struct apply { |
14 | typedef U* type; |
15 | }; |
16 | }; |
17 | } |
18 | |
19 | namespace Nalias = N; |
20 | |
21 | template<typename T> |
22 | struct X0 { }; |
23 | |
24 | using namespace N; |
25 | |
26 | template<typename T, typename U> |
27 | struct X1 { |
28 | typedef T type; |
29 | typedef U U_type; |
30 | |
31 | void f0(T); // expected-note{{previous}} |
32 | void f0(U); |
33 | void f0(type); // expected-error{{redeclar}} |
34 | |
35 | void f1(T*); // expected-note{{previous}} |
36 | void f1(U*); |
37 | void f1(type*); // expected-error{{redeclar}} |
38 | |
39 | void f2(X0<T>*); // expected-note{{previous}} |
40 | void f2(X0<U>*); |
41 | void f2(X0<type>*); // expected-error{{redeclar}} |
42 | |
43 | void f3(X0<T>*); // expected-note{{previous}} |
44 | void f3(X0<U>*); |
45 | void f3(::X0<type>*); // expected-error{{redeclar}} |
46 | |
47 | void f4(typename T::template apply<U>*); // expected-note{{previous}} |
48 | void f4(typename U::template apply<U>*); |
49 | void f4(typename type::template apply<T>*); |
50 | void f4(typename type::template apply<U_type>*); // expected-error{{redeclar}} |
51 | |
52 | void f5(typename T::template apply<U>::type*); // expected-note{{previous}} |
53 | void f5(typename U::template apply<U>::type*); |
54 | void f5(typename U::template apply<T>::type*); |
55 | void f5(typename type::template apply<T>::type*); |
56 | void f5(typename type::template apply<U_type>::type*); // expected-error{{redeclar}} |
57 | |
58 | void f6(typename N::X2<T>::template apply<U> *); // expected-note{{previous}} |
59 | void f6(typename N::X2<U>::template apply<U> *); |
60 | void f6(typename N::X2<U>::template apply<T> *); |
61 | void f6(typename ::N::X2<type>::template apply<U_type> *); // expected-error{{redeclar}} |
62 | |
63 | void f7(typename N::X2<T>::template apply<U> *); // expected-note{{previous}} |
64 | void f7(typename N::X2<U>::template apply<U> *); |
65 | void f7(typename N::X2<U>::template apply<T> *); |
66 | void f7(typename X2<type>::template apply<U_type> *); // expected-error{{redeclar}} |
67 | |
68 | void f8(typename N::X2<T>::template apply<U> *); // expected-note{{previous}} |
69 | void f8(typename N::X2<U>::template apply<U> *); |
70 | void f8(typename N::X2<U>::template apply<T> *); |
71 | void f8(typename ::Nalias::X2<type>::template apply<U_type> *); // expected-error{{redeclar}} |
72 | }; |
73 | |
74 | namespace PR6851 { |
75 | template <bool v> |
76 | struct S; |
77 | |
78 | struct N { |
79 | template <bool w> |
80 | S< S<w>::cond && 1 > foo(); |
81 | }; |
82 | |
83 | struct Arrow { Arrow *operator->(); int n; }; |
84 | template<typename T> struct M { |
85 | Arrow a; |
86 | auto f() -> M<decltype(a->n)>; |
87 | }; |
88 | |
89 | struct Alien; |
90 | bool operator&&(const Alien&, const Alien&); |
91 | |
92 | template <bool w> |
93 | S< S<w>::cond && 1 > N::foo() { } |
94 | |
95 | template<typename T> |
96 | auto M<T>::f() -> M<decltype(a->n)> {} |
97 | } |
98 | |
99 | namespace PR7460 { |
100 | template <typename T> |
101 | struct TemplateClass2 |
102 | { |
103 | enum { SIZE = 100 }; |
104 | static T member[SIZE]; |
105 | }; |
106 | |
107 | template <typename T> |
108 | T TemplateClass2<T>::member[TemplateClass2<T>::SIZE]; |
109 | } |
110 | |
111 | namespace PR18275 { |
112 | template<typename T> struct A { |
113 | void f(const int); |
114 | void g(int); |
115 | void h(const T); |
116 | void i(T); |
117 | }; |
118 | |
119 | template<typename T> |
120 | void A<T>::f(int x) { x = 0; } |
121 | |
122 | template<typename T> |
123 | void A<T>::g(const int x) { // expected-note {{declared const here}} |
124 | x = 0; // expected-error {{cannot assign to variable 'x'}} |
125 | } |
126 | |
127 | template<typename T> |
128 | void A<T>::h(T) {} // FIXME: Should reject this. Type is different from prior decl if T is an array type. |
129 | |
130 | template<typename T> |
131 | void A<T>::i(const T) {} // FIXME: Should reject this. Type is different from prior decl if T is an array type. |
132 | |
133 | template struct A<int>; |
134 | template struct A<int[1]>; |
135 | } |
136 | |
137 | namespace PR21289 { |
138 | template<typename T> using X = int; |
139 | template<typename T, decltype(sizeof(0))> using Y = int; |
140 | template<typename ...Ts> struct S {}; |
141 | template<typename ...Ts> void f() { |
142 | // This is a dependent type. It is *not* S<int>, even though it canonically |
143 | // contains no template parameters. |
144 | using Type = S<X<Ts>...>; |
145 | Type s; |
146 | using Type = S<int, int, int>; |
147 | } |
148 | void g() { f<void, void, void>(); } |
149 | |
150 | template<typename ...Ts> void h(S<int>) {} |
151 | // Pending a core issue, it's not clear if these are redeclarations, but they |
152 | // are probably intended to be... even though substitution can succeed for one |
153 | // of them but fail for the other! |
154 | template<typename ...Ts> void h(S<X<Ts>...>) {} // expected-note {{previous}} |
155 | template<typename ...Ts> void h(S<Y<Ts, sizeof(Ts)>...>) {} // expected-error {{redefinition}} |
156 | } |
157 | |