50 lines
2.2 KiB
C++
50 lines
2.2 KiB
C++
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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template<typename T> void f0(T); // expected-note{{here}}
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template void f0(int); // expected-error{{explicit instantiation of undefined function template}}
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template<typename T>
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struct X0 {
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struct Inner;
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void f1(); // expected-note{{here}}
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static T value; // expected-note{{here}}
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};
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template void X0<int>::f1(); // expected-error{{explicit instantiation of undefined member function}}
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template int X0<int>::value; // expected-error{{explicit instantiation of undefined static data member}}
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template<> void f0(long); // expected-note{{previous template specialization is here}}
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template void f0(long); // expected-warning{{explicit instantiation of 'f0<long>' that occurs after an explicit specialization has no effect}}
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template<> void X0<long>::f1(); // expected-note{{previous template specialization is here}}
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template void X0<long>::f1(); // expected-warning{{explicit instantiation of 'f1' that occurs after an explicit specialization has no effect}}
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template<> struct X0<long>::Inner; // expected-note{{previous template specialization is here}}
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template struct X0<long>::Inner; // expected-warning{{explicit instantiation of 'Inner' that occurs after an explicit specialization has no effect}}
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template<> long X0<long>::value; // expected-note{{previous template specialization is here}}
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template long X0<long>::value; // expected-warning{{explicit instantiation of 'value' that occurs after an explicit specialization has no effect}}
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template<> struct X0<double>; // expected-note{{previous template specialization is here}}
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template struct X0<double>; // expected-warning{{explicit instantiation of 'X0<double>' that occurs after an explicit specialization has no effect}}
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// PR 6458
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namespace test0 {
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template <class T> class foo {
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int compare(T x, T y);
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};
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template <> int foo<char>::compare(char x, char y);
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template <class T> int foo<T>::compare(T x, T y) {
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// invalid at T=char; if we get a diagnostic here, we're
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// inappropriately instantiating this template.
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void *ptr = x;
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}
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extern template class foo<char>; // expected-warning 0-1{{extern templates are a C++11 extension}}
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template class foo<char>;
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}
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