43 lines
1.0 KiB
C++
43 lines
1.0 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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// expected-no-diagnostics
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#if !__has_feature(cxx_access_control_sfinae)
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# error No support for access control as part of SFINAE?
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#endif
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typedef char yes_type;
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typedef char (&no_type)[2];
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template<unsigned N> struct unsigned_c { };
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template<typename T>
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class has_copy_constructor {
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static T t;
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template<typename U> static yes_type check(unsigned_c<sizeof(U(t))> * = 0);
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template<typename U> static no_type check(...);
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public:
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static const bool value = (sizeof(check<T>(0)) == sizeof(yes_type));
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};
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struct HasCopy { };
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struct HasNonConstCopy {
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HasNonConstCopy(HasNonConstCopy&);
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};
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struct HasDeletedCopy {
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HasDeletedCopy(const HasDeletedCopy&) = delete;
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};
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struct HasPrivateCopy {
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private:
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HasPrivateCopy(const HasPrivateCopy&);
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};
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int check0[has_copy_constructor<HasCopy>::value? 1 : -1];
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int check1[has_copy_constructor<HasNonConstCopy>::value? 1 : -1];
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int check2[has_copy_constructor<HasDeletedCopy>::value? -1 : 1];
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int check3[has_copy_constructor<HasPrivateCopy>::value? -1 : 1];
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