fe0d277f31
The arithmetic and comparison operators are ill-formed when R1 or R2 is not a std::ratio. Fixes: https://github.com/llvm/llvm-project/issues/63753
57 lines
2.3 KiB
C++
57 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// <ratio>
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//
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// [ratio.general]/2
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// Throughout subclause [ratio], the names of template parameters are
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// used to express type requirements. If a template parameter is named
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// R1 or R2, and the template argument is not a specialization of the
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// ratio template, the program is ill-formed.
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#include <ratio>
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struct invalid {
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static const int num = 1;
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static const int den = 1;
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};
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using valid = std::ratio<1, 1>;
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namespace add {
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using valid_valid = std::ratio_add<valid, valid>::type;
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using invalid_valid =
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std::ratio_add<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
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using valid_invalid =
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std::ratio_add<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
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} // namespace add
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namespace subtract {
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using valid_valid = std::ratio_subtract<valid, valid>::type;
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using invalid_valid =
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std::ratio_subtract<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
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using valid_invalid =
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std::ratio_subtract<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
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} // namespace subtract
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namespace multiply {
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using valid_valid = std::ratio_multiply<valid, valid>::type;
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using invalid_valid =
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std::ratio_multiply<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
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using valid_invalid =
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std::ratio_multiply<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
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} // namespace multiply
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namespace divide {
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using valid_valid = std::ratio_divide<valid, valid>::type;
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using invalid_valid =
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std::ratio_divide<invalid, valid>::type; // expected-error@*:* {{R1 to be a specialisation of the ratio template}}
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using valid_invalid =
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std::ratio_divide<valid, invalid>::type; // expected-error@*:* {{R2 to be a specialisation of the ratio template}}
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} // namespace divide
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