| 1 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s |
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| 2 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
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| 3 | |
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| 4 | template<typename T> void f0(T); // expected-note{{here}} |
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| 5 | template void f0(int); // expected-error{{explicit instantiation of undefined function template}} |
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| 6 | |
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| 7 | template<typename T> |
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| 8 | struct X0 { |
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| 9 | struct Inner; |
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| 10 | |
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| 11 | void f1(); // expected-note{{here}} |
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| 12 | |
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| 13 | static T value; // expected-note{{here}} |
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| 14 | }; |
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| 15 | |
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| 16 | template void X0<int>::f1(); // expected-error{{explicit instantiation of undefined member function}} |
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| 17 | |
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| 18 | template int X0<int>::value; // expected-error{{explicit instantiation of undefined static data member}} |
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| 19 | |
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| 20 | template<> void f0(long); // expected-note{{previous template specialization is here}} |
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| 21 | template void f0(long); // expected-warning{{explicit instantiation of 'f0<long>' that occurs after an explicit specialization has no effect}} |
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| 22 | |
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| 23 | template<> void X0<long>::f1(); // expected-note{{previous template specialization is here}} |
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| 24 | template void X0<long>::f1(); // expected-warning{{explicit instantiation of 'f1' that occurs after an explicit specialization has no effect}} |
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| 25 | |
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| 26 | template<> struct X0<long>::Inner; // expected-note{{previous template specialization is here}} |
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| 27 | template struct X0<long>::Inner; // expected-warning{{explicit instantiation of 'Inner' that occurs after an explicit specialization has no effect}} |
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| 28 | |
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| 29 | template<> long X0<long>::value; // expected-note{{previous template specialization is here}} |
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| 30 | template long X0<long>::value; // expected-warning{{explicit instantiation of 'value' that occurs after an explicit specialization has no effect}} |
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| 31 | |
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| 32 | template<> struct X0<double>; // expected-note{{previous template specialization is here}} |
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| 33 | template struct X0<double>; // expected-warning{{explicit instantiation of 'X0<double>' that occurs after an explicit specialization has no effect}} |
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| 34 | |
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| 35 | // PR 6458 |
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| 36 | namespace test0 { |
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| 37 | template <class T> class foo { |
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| 38 | int compare(T x, T y); |
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| 39 | }; |
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| 40 | |
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| 41 | template <> int foo<char>::compare(char x, char y); |
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| 42 | template <class T> int foo<T>::compare(T x, T y) { |
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| 43 | // invalid at T=char; if we get a diagnostic here, we're |
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| 44 | // inappropriately instantiating this template. |
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| 45 | void *ptr = x; |
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| 46 | } |
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| 47 | extern template class foo<char>; // expected-warning 0-1{{extern templates are a C++11 extension}} |
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| 48 | template class foo<char>; |
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| 49 | } |
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| 50 | |
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