| 1 | // RUN: %clang_cc1 -fsyntax-only -Wundefined-func-template -Wundefined-var-template -verify %s |
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| 2 | |
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| 3 | // Test that a diagnostic is emitted when an entity marked with the |
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| 4 | // exclude_from_explicit_instantiation attribute is not defined in |
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| 5 | // the current TU but it is used (and it is hence implicitly |
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| 6 | // instantiated). |
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| 7 | |
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| 8 | #define EXCLUDE_FROM_EXPLICIT_INSTANTIATION __attribute__((exclude_from_explicit_instantiation)) |
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| 9 | |
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| 10 | template <class T> |
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| 11 | struct Foo { |
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| 12 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION void non_static_member_function(); // expected-note{{forward declaration of template entity is here}} |
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| 13 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION static void static_member_function(); // expected-note{{forward declaration of template entity is here}} |
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| 14 | EXCLUDE_FROM_EXPLICIT_INSTANTIATION static int static_data_member; // expected-note{{forward declaration of template entity is here}} |
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| 15 | struct EXCLUDE_FROM_EXPLICIT_INSTANTIATION nested { |
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| 16 | static int static_member_function(); // expected-note{{forward declaration of template entity is here}} |
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| 17 | }; |
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| 18 | }; |
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| 19 | |
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| 20 | extern template struct Foo<int>; |
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| 21 | |
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| 22 | void use() { |
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| 23 | Foo<int> foo; |
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| 24 | |
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| 25 | foo.non_static_member_function(); // expected-warning{{instantiation of function 'Foo<int>::non_static_member_function' required here, but no definition is available}} |
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| 26 | // expected-note@-1 {{add an explicit instantiation}} |
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| 27 | |
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| 28 | Foo<int>::static_member_function(); // expected-warning{{instantiation of function 'Foo<int>::static_member_function' required here, but no definition is available}} |
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| 29 | // expected-note@-1 {{add an explicit instantiation}} |
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| 30 | |
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| 31 | (void)Foo<int>::static_data_member; // expected-warning{{instantiation of variable 'Foo<int>::static_data_member' required here, but no definition is available}} |
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| 32 | // expected-note@-1 {{add an explicit instantiation}} |
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| 33 | |
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| 34 | Foo<int>::nested::static_member_function(); // expected-warning{{instantiation of function 'Foo<int>::nested::static_member_function' required here, but no definition is available}} |
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| 35 | // expected-note@-1 {{add an explicit instantiation}} |
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| 36 | } |
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| 37 | |
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