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91 lines
3.8 KiB
91 lines
3.8 KiB
4 months ago
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// RUN: %clang_cc1 -fsyntax-only -verify %s
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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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// RUN: cp %s %t
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// RUN: not %clang_cc1 -x c++ -fixit %t -DFIXING
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// RUN: %clang_cc1 -x c++ %t -DFIXING
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template<typename T> void f(T) { }
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#if __cplusplus >= 201103L
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// expected-note@-2 {{explicit instantiation refers here}}
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#endif
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template<typename T> void g(T) { }
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#if __cplusplus >= 201103L
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// expected-note@-2 {{explicit instantiation refers here}}
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#endif
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template<typename T> struct x { };
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#if __cplusplus >= 201103L
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// expected-note@-2 {{explicit instantiation refers here}}
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#endif
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template<typename T> struct y { }; // expected-note {{declared here}}
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namespace good { // Only good in C++98/03
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#ifndef FIXING
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template void f<int>(int);
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#if __cplusplus >= 201103L
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// expected-error@-2 {{explicit instantiation of 'f' must occur at global scope}}
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#endif
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template void g(int);
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#if __cplusplus >= 201103L
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// expected-error@-2 {{explicit instantiation of 'g' must occur at global scope}}
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#endif
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template struct x<int>;
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#if __cplusplus >= 201103L
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// expected-error@-2 {{explicit instantiation of 'x' must occur at global scope}}
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#endif
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#endif
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}
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namespace unsupported {
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#ifndef FIXING
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template struct y; // expected-error {{template 'y' cannot be referenced with a struct specifier}}
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#endif
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}
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template<typename T> void f0(T) { }
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template<typename T> void g0(T) { }
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template<typename T> struct x0 { }; // expected-note {{explicitly specialized declaration is here}}
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template<typename T> struct y0 { };
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// Should recover as if definition
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namespace noargs_body {
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#ifndef FIXING
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template void g0(int) { } // expected-error {{function cannot be defined in an explicit instantiation; if this declaration is meant to be a function definition, remove the 'template' keyword}}
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#endif
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template struct y0 { }; // expected-error {{class cannot be defined in an explicit instantiation; if this declaration is meant to be a class definition, remove the 'template' keyword}}
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}
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// Explicit specializations expected in global scope
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namespace exp_spec {
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#ifndef FIXING
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template<> void f0<int>(int) { } // expected-error {{no function template matches function template specialization 'f0'}}
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template<> struct x0<int> { }; // expected-error {{class template specialization of 'x0' must occur at global scope}}
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#endif
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}
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template<typename T> void f1(T) { }
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template<typename T> struct x1 { }; // expected-note {{explicitly specialized declaration is here}}
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// Should recover as if specializations,
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// thus also complain about not being in global scope.
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namespace args_bad {
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#ifndef FIXING
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template void f1<int>(int) { } // expected-error {{explicit template instantiation cannot have a definition; if this definition is meant to be an explicit specialization, add '<>' after the 'template' keyword}} \
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expected-error {{no function template matches function template specialization 'f1'}}
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template struct x1<int> { }; // expected-error {{explicit template instantiation cannot have a definition; if this definition is meant to be an explicit specialization, add '<>' after the 'template' keyword}} \
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expected-error {{class template specialization of 'x1' must occur at global scope}}
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#endif
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}
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template<typename T> void f2(T) { }
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template<typename T> struct x2 { };
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// Should recover as if specializations
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template void f2<int>(int) { } // expected-error {{explicit template instantiation cannot have a definition; if this definition is meant to be an explicit specialization, add '<>' after the 'template' keyword}}
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template struct x2<int> { }; // expected-error {{explicit template instantiation cannot have a definition; if this definition is meant to be an explicit specialization, add '<>' after the 'template' keyword}}
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