| 1 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
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| 2 | // expected-no-diagnostics |
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| 3 | |
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| 4 | #if !__has_feature(cxx_access_control_sfinae) |
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| 5 | # error No support for access control as part of SFINAE? |
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| 6 | #endif |
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| 7 | |
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| 8 | typedef char yes_type; |
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| 9 | typedef char (&no_type)[2]; |
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| 10 | |
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| 11 | template<unsigned N> struct unsigned_c { }; |
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| 12 | |
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| 13 | template<typename T> |
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| 14 | class has_copy_constructor { |
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| 15 | static T t; |
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| 16 | |
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| 17 | template<typename U> static yes_type check(unsigned_c<sizeof(U(t))> * = 0); |
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| 18 | template<typename U> static no_type check(...); |
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| 19 | |
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| 20 | public: |
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| 21 | static const bool value = (sizeof(check<T>(0)) == sizeof(yes_type)); |
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| 22 | }; |
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| 23 | |
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| 24 | struct HasCopy { }; |
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| 25 | |
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| 26 | struct HasNonConstCopy { |
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| 27 | HasNonConstCopy(HasNonConstCopy&); |
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| 28 | }; |
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| 29 | |
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| 30 | struct HasDeletedCopy { |
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| 31 | HasDeletedCopy(const HasDeletedCopy&) = delete; |
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| 32 | }; |
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| 33 | |
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| 34 | struct HasPrivateCopy { |
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| 35 | private: |
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| 36 | HasPrivateCopy(const HasPrivateCopy&); |
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| 37 | }; |
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| 38 | |
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| 39 | int check0[has_copy_constructor<HasCopy>::value? 1 : -1]; |
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| 40 | int check1[has_copy_constructor<HasNonConstCopy>::value? 1 : -1]; |
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| 41 | int check2[has_copy_constructor<HasDeletedCopy>::value? -1 : 1]; |
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| 42 | int check3[has_copy_constructor<HasPrivateCopy>::value? -1 : 1]; |
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| 43 | |
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