164c204a19
Found while running libc++'s tests with MSVC's STL. This fixes 3 kinds of warnings: - Add void-casts to fix `-Wunused-variable` warnings. - Avoid sign/truncation warnings in `ConvertibleToIntegral.h`. - Add `TEST_STD_AT_LEAST_23_OR_RUNTIME_EVALUATED` to avoid mixing preprocessor and runtime tests. - Cleanup: Add `TEST_STD_AT_LEAST_20_OR_RUNTIME_EVALUATED` for consistency.
45 lines
1.8 KiB
C++
45 lines
1.8 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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#ifndef TEST_STD_CONTAINERS_VIEWS_MDSPAN_CONVERTIBLE_TO_INTEGRAL_H
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#define TEST_STD_CONTAINERS_VIEWS_MDSPAN_CONVERTIBLE_TO_INTEGRAL_H
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struct IntType {
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int val;
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constexpr IntType() = default;
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constexpr IntType(int v) noexcept : val(v) {}
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constexpr bool operator==(const IntType& rhs) const { return val == rhs.val; }
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constexpr operator int() const noexcept { return val; }
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constexpr operator unsigned char() const { return static_cast<unsigned char>(val); }
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constexpr operator signed char() const noexcept { return static_cast<signed char>(val); }
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};
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// only non-const convertible
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struct IntTypeNC {
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int val;
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constexpr IntTypeNC() = default;
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constexpr IntTypeNC(int v) noexcept : val(v) {}
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constexpr bool operator==(const IntType& rhs) const { return val == rhs.val; }
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constexpr operator int() noexcept { return val; }
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constexpr operator unsigned() { return static_cast<unsigned>(val); }
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constexpr operator char() noexcept { return static_cast<char>(val); }
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};
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// weird configurability of convertibility to int
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template<bool conv_c, bool conv_nc, bool ctor_nt_c, bool ctor_nt_nc>
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struct IntConfig {
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int val;
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constexpr explicit IntConfig(int val_):val(val_){}
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constexpr operator int() noexcept(ctor_nt_nc) requires(conv_nc) { return val; }
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constexpr operator int() const noexcept(ctor_nt_c) requires(conv_c) { return val; }
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};
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#endif // TEST_STD_CONTAINERS_VIEWS_MDSPAN_CONVERTIBLE_TO_INTEGRAL_H
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