| 1 | // RUN: %clang_cc1 -fsyntax-only -std=c++17 -pedantic -verify %s |
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| 2 | // RUN: %clang_cc1 -fsyntax-only -std=c++2a -Wc++17-compat-pedantic -verify %s -Wno-defaulted-function-deleted |
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| 3 | |
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| 4 | struct A {}; |
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| 5 | int (A::*pa)() const&; |
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| 6 | int use_pa = (A().*pa)(); |
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| 7 | #if __cplusplus <= 201703L |
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| 8 | // expected-warning@-2 {{invoking a pointer to a 'const &' member function on an rvalue is a C++2a extension}} |
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| 9 | #else |
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| 10 | // expected-warning@-4 {{invoking a pointer to a 'const &' member function on an rvalue is incompatible with C++ standards before C++2a}} |
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| 11 | #endif |
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| 12 | |
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| 13 | struct B { |
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| 14 | void b() { |
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| 15 | (void) [=, this] {}; |
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| 16 | #if __cplusplus <= 201703L |
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| 17 | // expected-warning@-2 {{explicit capture of 'this' with a capture default of '=' is a C++2a extension}} |
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| 18 | #else |
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| 19 | // expected-warning@-4 {{explicit capture of 'this' with a capture default of '=' is incompatible with C++ standards before C++2a}} |
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| 20 | #endif |
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| 21 | } |
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| 22 | |
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| 23 | int n : 5 = 0; |
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| 24 | #if __cplusplus <= 201703L |
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| 25 | // expected-warning@-2 {{default member initializer for bit-field is a C++2a extension}} |
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| 26 | #else |
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| 27 | // expected-warning@-4 {{default member initializer for bit-field is incompatible with C++ standards before C++2a}} |
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| 28 | #endif |
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| 29 | }; |
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| 30 | |
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| 31 | auto Lambda = []{}; |
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| 32 | decltype(Lambda) AnotherLambda; |
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| 33 | #if __cplusplus <= 201703L |
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| 34 | // expected-error@-2 {{no matching constructor}} expected-note@-3 2{{candidate}} |
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| 35 | #else |
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| 36 | // expected-warning@-4 {{default construction of lambda is incompatible with C++ standards before C++2a}} |
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| 37 | #endif |
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| 38 | |
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| 39 | void copy_lambda() { Lambda = Lambda; } |
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| 40 | #if __cplusplus <= 201703L |
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| 41 | // expected-error@-2 {{deleted}} expected-note@-10 {{lambda}} |
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| 42 | #else |
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| 43 | // expected-warning@-4 {{assignment of lambda is incompatible with C++ standards before C++2a}} |
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| 44 | #endif |
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| 45 | |
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| 46 | struct DefaultDeleteWrongTypeBase { |
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| 47 | DefaultDeleteWrongTypeBase(DefaultDeleteWrongTypeBase&); |
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| 48 | }; |
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| 49 | struct DefaultDeleteWrongType : DefaultDeleteWrongTypeBase { |
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| 50 | DefaultDeleteWrongType(const DefaultDeleteWrongType&) = default; |
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| 51 | #if __cplusplus <= 201703L |
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| 52 | // expected-error@-2 {{a member or base requires it to be non-const}} |
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| 53 | #else |
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| 54 | // expected-warning@-4 {{explicitly defaulting this copy constructor with a type different from the implicit type is incompatible with C++ standards before C++2a}} |
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| 55 | #endif |
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| 56 | }; |
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| 57 | |
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| 58 | void ForRangeInit() { |
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| 59 | for (int arr[3] = {1, 2, 3}; int n : arr) {} |
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| 60 | #if __cplusplus <= 201703L |
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| 61 | // expected-warning@-2 {{range-based for loop initialization statements are a C++2a extension}} |
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| 62 | #else |
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| 63 | // expected-warning@-4 {{range-based for loop initialization statements are incompatible with C++ standards before C++2a}} |
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| 64 | #endif |
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| 65 | } |
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| 66 | |
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