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      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 
     15 void f() {
     16  (void)sizeof(F<int>); // expected-note{{instantiation of template class}}
     17 }
     18 
     19 typedef struct { } X;
     20 
     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 
     30 void h() {
     31   (void)sizeof(G<int>); // expected-note{{in instantiation of template class 'G<int>' requested here}}
     32 }
     33