16 lines
873 B
C++
16 lines
873 B
C++
// RUN: %clang_cc1 -std=c++20 -verify %s -o -
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struct empty {};
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struct metre : empty { };
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struct second : empty { };
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template<auto, auto> struct divided_units : empty { };
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template<auto> struct quantity { }; // #QUANT
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void use() {
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quantity<divided_units<metre{}, second{}>{}> q{};
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quantity<metre{}> q2 = q;
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// expected-error@-1 {{no viable conversion from 'quantity<divided_units<metre{}, second{}>{{}}>' to 'quantity<metre{{}}>'}}
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// expected-note@#QUANT {{candidate constructor (the implicit copy constructor) not viable: no known conversion from 'quantity<divided_units<metre{}, second{}>{}>' to 'const quantity<metre{{}}> &' for 1st argument}}
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// expected-note@#QUANT {{candidate constructor (the implicit move constructor) not viable: no known conversion from 'quantity<divided_units<metre{}, second{}>{}>' to 'quantity<metre{{}}> &&' for 1st argument}}
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}
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