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