1 // RUN: %clang_cc1 -fsyntax-only -verify %s -Wno-unused
2 // RUN: %clang_cc1 -fsyntax-only -verify %s -Wno-unused -fms-compatibility -DMSVC
3 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s -Wno-unused
4 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s -Wno-unused -fms-compatibility -DMSVC
5 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -Wno-unused
6 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -Wno-unused -fms-compatibility -DMSVC
7 namespace N {
8   struct A {
9     typedef int type;
10   };
11 
12   struct B {
13   };
14 
15   struct C {
16     struct type { };
17     int type; // expected-note 2{{referenced member 'type' is declared here}}
18   };
19 }
20 
21 int i;
22 
23 typename N::A::type *ip1 = &i;
24 #if __cplusplus <= 199711L // C++03 or earlier modes
25 // expected-warning@-2 {{'typename' occurs outside of a template}}
26 #endif
27 typename N::B::type *ip2 = &i; // expected-error{{no type named 'type' in 'N::B'}}
28 #if __cplusplus <= 199711L
29 // expected-warning@-2 {{'typename' occurs outside of a template}}
30 #endif
31 typename N::C::type *ip3 = &i; // expected-error{{typename specifier refers to non-type member 'type'}}
32 #if __cplusplus <= 199711L
33 // expected-warning@-2 {{'typename' occurs outside of a template}}
34 #endif
35 
test(double d)36 void test(double d) {
37   typename N::A::type f(typename N::A::type(a)); // expected-warning{{disambiguated as a function declaration}}
38   // expected-note@-1 {{add a pair of parentheses}}
39 #if __cplusplus <= 199711L
40   // expected-warning@-3 2{{'typename' occurs outside of a template}}
41 #endif
42   int five = f(5);
43 
44   using namespace N;
45   for (typename A::type i = 0; i < 10; ++i)
46 #if __cplusplus <= 199711L
47 // expected-warning@-2 {{'typename' occurs outside of a template}}
48 #endif
49     five += 1;
50 
51   const typename N::A::type f2(d);
52 #if __cplusplus <= 199711L
53 // expected-warning@-2 {{'typename' occurs outside of a template}}
54 #endif
55 }
56 
57 namespace N {
58   template<typename T>
59   struct X {
60     typedef typename T::type type; // expected-error {{no type named 'type' in 'N::B'}} \
61     // expected-error {{no type named 'type' in 'B'}} \
62     // FIXME: location info for error above isn't very good \
63     // expected-error 2{{typename specifier refers to non-type member 'type'}} \
64     // expected-error{{type 'int' cannot be used prior to '::' because it has no members}}
65   };
66 }
67 
68 N::X<N::A>::type *ip4 = &i;
69 N::X<N::B>::type *ip5 = &i; // expected-note{{in instantiation of template class 'N::X<N::B>' requested here}}
70 N::X<N::C>::type *ip6 = &i; // expected-note{{in instantiation of template class 'N::X<N::C>' requested here}}
71 
72 N::X<int>::type fail1; // expected-note{{in instantiation of template class 'N::X<int>' requested here}}
73 
74 template<typename T>
75 struct Y {
76   typedef typename N::X<T>::type *type; // expected-note{{in instantiation of template class 'N::X<B>' requested here}} \
77   // expected-note{{in instantiation of template class 'N::X<C>' requested here}}
78 };
79 
80 struct A {
81   typedef int type;
82 };
83 
84 struct B {
85 };
86 
87 struct C {
88   struct type { };
89   int type; // expected-note{{referenced member 'type' is declared here}}
90 };
91 
92 ::Y<A>::type ip7 = &i;
93 ::Y<B>::type ip8 = &i; // expected-note{{in instantiation of template class 'Y<B>' requested here}}
94 ::Y<C>::type ip9 = &i; // expected-note{{in instantiation of template class 'Y<C>' requested here}}
95 
96 template<typename T> struct D {
97   typedef typename T::foo foo;  // expected-error {{type 'long' cannot be used prior to '::' because it has no members}}
98   typedef typename foo::bar bar;
99 };
100 
101 D<long> struct_D;  // expected-note {{in instantiation of template class 'D<long>' requested here}}
102 
103 template<typename T> struct E {
104   typedef typename T::foo foo;
105   typedef typename foo::bar bar;  // expected-error {{type 'E<F>::foo' (aka 'double') cannot be used prior to '::' because it has no members}}
106 };
107 
108 struct F {
109   typedef double foo;
110 };
111 
112 E<F> struct_E; // expected-note {{in instantiation of template class 'E<F>' requested here}}
113 
114 template<typename T> struct G {
115   typedef typename T::foo foo;
116   typedef typename foo::bar bar;
117 };
118 
119 struct H {
120   struct foo {
121     typedef double bar;
122   };
123 };
124 
125 G<H> struct_G;
126 
127 namespace PR10925 {
128   template< int mydim, typename Traits >
129   class BasicGeometry
130   {
131     typedef int some_type_t;
132   };
133 
134   template<class ctype, int mydim, int coorddim>
135   class MockGeometry : BasicGeometry<mydim, int>{
136     using typename BasicGeometry<mydim, int>::operator[]; // expected-error {{typename is allowed for identifiers only}}
137   };
138 }
139 
140 
141 namespace missing_typename {
142 template <class T1, class T2> struct pair {}; // expected-note 7 {{template parameter is declared here}}
143 
144 template <class T1, class T2>
145 struct map {
146   typedef T1* iterator;
147 };
148 
149 template <class T>
150 class ExampleClass1 {
151   struct ExampleItem;
152 
153 
154   struct ExampleItemSet {
155     typedef ExampleItem* iterator;
156     ExampleItem* operator[](unsigned);
157   };
158 
foo()159   void foo() {
160 #ifdef MSVC
161     // expected-warning@+4 {{omitted 'typename' is a Microsoft extension}}
162 #else
163     // expected-error@+2 {{template argument for template type parameter must be a type; did you forget 'typename'?}}
164 #endif
165     pair<ExampleItemSet::iterator, int> i;
166     pair<this->ExampleItemSet::iterator, int> i; // expected-error-re {{template argument for template type parameter must be a type{{$}}}}
167     pair<ExampleItemSet::operator[], int> i; // expected-error-re {{template argument for template type parameter must be a type{{$}}}}
168   }
169 #ifdef MSVC
170     // expected-warning@+4 {{omitted 'typename' is a Microsoft extension}}
171 #else
172   // expected-error@+2 {{template argument for template type parameter must be a type; did you forget 'typename'?}}
173 #endif
174   pair<ExampleItemSet::iterator, int> elt;
175 
176 
177   typedef map<int, ExampleItem*> ExampleItemMap;
178 
bar()179   static void bar() {
180 #ifdef MSVC
181     // expected-warning@+4 {{omitted 'typename' is a Microsoft extension}}
182 #else
183     // expected-error@+2 {{template argument for template type parameter must be a type; did you forget 'typename'?}}
184 #endif
185     pair<ExampleItemMap::iterator, int> i;
186   }
187 #ifdef MSVC
188     // expected-warning@+4 {{omitted 'typename' is a Microsoft extension}}
189 #else
190   // expected-error@+2 {{template argument for template type parameter must be a type; did you forget 'typename'?}}
191 #endif
192   pair<ExampleItemMap::iterator, int> entry;
193   pair<bar, int> foobar; // expected-error {{template argument for template type parameter must be a type}}
194 };
195 } // namespace missing_typename
196 
197 namespace missing_typename_and_base {
198 template <class T> struct Bar {}; // expected-note 1+ {{template parameter is declared here}}
199 template <typename T>
200 struct Foo : T {
201 
202   // FIXME: MSVC accepts this code.
203   Bar<TypeInBase> x; // expected-error {{use of undeclared identifier 'TypeInBase'}}
204 
205 #ifdef MSVC
206   // expected-warning@+4 {{omitted 'typename' is a Microsoft extension}}
207 #else
208   // expected-error@+2 {{must be a type; did you forget 'typename'?}}
209 #endif
210   Bar<T::TypeInBase> y;
211 
212 #ifdef MSVC
213   // expected-warning@+4 {{omitted 'typename' is a Microsoft extension}}
214 #else
215   // expected-error@+2 {{must be a type; did you forget 'typename'?}}
216 #endif
217   Bar<T::NestedRD::TypeInNestedRD> z;
218 
219 };
220 struct Base {
221   typedef int TypeInBase;
222   struct NestedRD {
223     typedef int TypeInNestedRD;
224   };
225 };
226 Foo<Base> x;
227 } // namespace missing_typename_and_base
228 
229 namespace func_type_vs_construct_tmp {
230 template <typename> struct S { typedef int type; };
231 template <typename T> void f();
232 template <int N> void f();
233 
234 // expected-error@+1 {{missing 'typename' prior to dependent type name 'S<int>::type'}}
g()235 template <typename T> void g() { f</*typename*/ S<T>::type(int())>(); }
236 
237 // Adding typename does fix the diagnostic.
h()238 template <typename T> void h() { f<typename S<T>::type(int())>(); }
239 
j()240 void j() {
241   g<int>(); // expected-note-re {{in instantiation {{.*}} requested here}}
242   h<int>();
243 }
244 } // namespace func_type_vs_construct_tmp
245 
246 namespace pointer_vs_multiply {
247 int x;
248 // expected-error@+1 {{missing 'typename' prior to dependent type name 'B::type_or_int'}}
g()249 template <typename T> void g() { T::type_or_int * x; }
250 // expected-error@+1 {{typename specifier refers to non-type member 'type_or_int' in 'pointer_vs_multiply::A'}}
h()251 template <typename T> void h() { typename T::type_or_int * x; }
252 
253 struct A { static const int type_or_int = 5; }; // expected-note {{referenced member 'type_or_int' is declared here}}
254 struct B { typedef int type_or_int; };
255 
j()256 void j() {
257   g<A>();
258   g<B>(); // expected-note-re {{in instantiation {{.*}} requested here}}
259   h<A>(); // expected-note-re {{in instantiation {{.*}} requested here}}
260   h<B>();
261 }
262 } // namespace pointer_vs_multiply
263