1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 template<typename T> struct A; // expected-note 4{{template is declared here}}
3
4 template<typename T> struct B : A<T*> { }; // expected-error{{implicit instantiation of undefined template}} \
5 // expected-error{{implicit instantiation of undefined template 'A<X *>'}}
6
7 template<typename T> struct C : B<T> { } ; // expected-note{{instantiation of template class}}
8
9 template<typename T> struct D : C<T> { }; // expected-note{{instantiation of template class}}
10
11 template<typename T> struct E : D<T> { }; // expected-note{{instantiation of template class}}
12
13 template<typename T> struct F : E<T(T)> { }; // expected-note{{instantiation of template class}}
14
f()15 void f() {
16 (void)sizeof(F<int>); // expected-note{{instantiation of template class}}
17 }
18
19 typedef struct { } X;
20
g()21 void g() {
22 (void)sizeof(B<X>); // expected-note{{in instantiation of template class 'B<X>' requested here}}
23 }
24
25 template<typename T>
26 struct G : A<T>, // expected-error{{implicit instantiation of undefined template 'A<int>'}}
27 A<T*> // expected-error{{implicit instantiation of undefined template 'A<int *>'}}
28 { };
29
h()30 void h() {
31 (void)sizeof(G<int>); // expected-note{{in instantiation of template class 'G<int>' requested here}}
32 }
33
34 namespace PR13365 {
35 template <class T> class ResultTy { // expected-warning {{does not declare any constructor}}
36 T t; // expected-note {{reference member 't' will never be initialized}}
37 };
38
39 template <class T1, class T2>
Deduce(void (T1::* member)(T2))40 typename ResultTy<T2>::error Deduce( void (T1::*member)(T2) ) {} // \
41 // expected-note {{instantiation of template class 'PR13365::ResultTy<int &>'}} \
42 // expected-note {{substitution failure [with T1 = PR13365::Cls, T2 = int &]}}
43
44 struct Cls {
45 void method(int&);
46 };
test()47 void test() {
48 Deduce(&Cls::method); // expected-error {{no matching function}} \
49 // expected-note {{substituting deduced template arguments into function template 'Deduce' [with T1 = PR13365::Cls, T2 = int &]}}
50 }
51 }
52