77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -verify %s
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// Test class template partial specializations of member templates.
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template<typename T>
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struct X0 {
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template<typename U> struct Inner0 {
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static const unsigned value = 0;
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};
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template<typename U> struct Inner0<U*> {
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static const unsigned value = 1;
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};
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};
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template<typename T> template<typename U>
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struct X0<T>::Inner0<const U*> {
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static const unsigned value = 2;
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};
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int array0[X0<int>::Inner0<int>::value == 0? 1 : -1];
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int array1[X0<int>::Inner0<int*>::value == 1? 1 : -1];
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int array2[X0<int>::Inner0<const int*>::value == 2? 1 : -1];
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// Make sure we can provide out-of-line class template partial specializations
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// for member templates (and instantiate them).
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template<class T> struct A {
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struct C {
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template<class T2> struct B;
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};
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};
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// partial specialization of A<T>::C::B<T2>
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template<class T> template<class T2> struct A<T>::C::B<T2*> { };
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A<short>::C::B<int*> absip;
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// Check for conflicts during template instantiation.
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template<typename T, typename U>
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struct Outer {
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template<typename X, typename Y> struct Inner;
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template<typename Y> struct Inner<T, Y> {}; // expected-note{{previous}}
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template<typename Y> struct Inner<U, Y> {}; // expected-error{{cannot be redeclared}}
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};
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Outer<int, int> outer; // expected-note{{instantiation}}
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// Test specialization of class template partial specialization members.
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template<> template<typename Z>
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struct X0<float>::Inner0<Z*> {
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static const unsigned value = 3;
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};
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int array3[X0<float>::Inner0<int>::value == 0? 1 : -1];
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int array4[X0<float>::Inner0<int*>::value == 3? 1 : -1];
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int array5[X0<float>::Inner0<const int*>::value == 2? 1 : -1];
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namespace rdar8651930 {
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template<typename OuterT>
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struct Outer {
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template<typename T, typename U>
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struct Inner;
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template<typename T>
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struct Inner<T, T> {
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static const bool value = true;
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};
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template<typename T, typename U>
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struct Inner {
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static const bool value = false;
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};
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};
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int array0[Outer<int>::Inner<int, int>::value? 1 : -1];
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int array1[Outer<int>::Inner<int, float>::value? -1 : 1];
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}
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