1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 // Test class template partial specializations of member templates. 4 template<typename T> 5 struct X0 { 6 template<typename U> struct Inner0 { 7 static const unsigned value = 0; 8 }; 9 10 template<typename U> struct Inner0<U*> { 11 static const unsigned value = 1; 12 }; 13 }; 14 15 template<typename T> template<typename U> 16 struct X0<T>::Inner0<const U*> { 17 static const unsigned value = 2; 18 }; 19 20 int array0[X0<int>::Inner0<int>::value == 0? 1 : -1]; 21 int array1[X0<int>::Inner0<int*>::value == 1? 1 : -1]; 22 int array2[X0<int>::Inner0<const int*>::value == 2? 1 : -1]; 23 24 // Make sure we can provide out-of-line class template partial specializations 25 // for member templates (and instantiate them). 26 template<class T> struct A { 27 struct C { 28 template<class T2> struct B; 29 }; 30 }; 31 32 // partial specialization of A<T>::C::B<T2> 33 template<class T> template<class T2> struct A<T>::C::B<T2*> { }; 34 35 A<short>::C::B<int*> absip; 36 37 // Check for conflicts during template instantiation. 38 template<typename T, typename U> 39 struct Outer { 40 template<typename X, typename Y> struct Inner; 41 template<typename Y> struct Inner<T, Y> {}; // expected-note{{previous}} 42 template<typename Y> struct Inner<U, Y> {}; // expected-error{{cannot be redeclared}} 43 }; 44 45 Outer<int, int> outer; // expected-note{{instantiation}} 46 47 // Test specialization of class template partial specialization members. 48 template<> template<typename Z> 49 struct X0<float>::Inner0<Z*> { 50 static const unsigned value = 3; 51 }; 52 53 int array3[X0<float>::Inner0<int>::value == 0? 1 : -1]; 54 int array4[X0<float>::Inner0<int*>::value == 3? 1 : -1]; 55 int array5[X0<float>::Inner0<const int*>::value == 2? 1 : -1]; 56 57 namespace rdar8651930 { 58 template<typename OuterT> 59 struct Outer { 60 template<typename T, typename U> 61 struct Inner; 62 63 template<typename T> 64 struct Inner<T, T> { 65 static const bool value = true; 66 }; 67 68 template<typename T, typename U> 69 struct Inner { 70 static const bool value = false; 71 }; 72 }; 73 74 int array0[Outer<int>::Inner<int, int>::value? 1 : -1]; 75 int array1[Outer<int>::Inner<int, float>::value? -1 : 1]; 76 } 77
