31cbe0f240
C++98 and C++03 are effectively aliases as far as Clang is concerned. As such, allowing both std=c++98 and std=c++03 as Lit parameters is just slightly confusing, but provides no value. It's similar to allowing both std=c++17 and std=c++1z, which we don't do. This was discovered because we had an internal bot that ran the test suite under both c++98 AND c++03 -- one of which is redundant. Differential Revision: https://reviews.llvm.org/D80926
65 lines
1.8 KiB
C++
65 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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// UNSUPPORTED: c++03, c++11
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// <functional>
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// make sure that we can hash enumeration values
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// Not very portable
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#include "test_macros.h"
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#include <functional>
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#include <cassert>
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#include <type_traits>
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#include <limits>
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enum class Colors { red, orange, yellow, green, blue, indigo, violet };
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enum class Cardinals { zero, one, two, three, five=5 };
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enum class LongColors : short { red, orange, yellow, green, blue, indigo, violet };
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enum class ShortColors : long { red, orange, yellow, green, blue, indigo, violet };
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enum class EightBitColors : uint8_t { red, orange, yellow, green, blue, indigo, violet };
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enum Fruits { apple, pear, grape, mango, cantaloupe };
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template <class T>
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void
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test()
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{
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typedef std::hash<T> H;
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static_assert((std::is_same<typename H::argument_type, T>::value), "" );
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static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" );
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ASSERT_NOEXCEPT(H()(T()));
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typedef typename std::underlying_type<T>::type under_type;
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H h1;
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std::hash<under_type> h2;
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for (int i = 0; i <= 5; ++i)
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{
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T t(static_cast<T> (i));
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const bool small = std::integral_constant<bool, sizeof(T) <= sizeof(std::size_t)>::value; // avoid compiler warnings
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if (small)
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assert(h1(t) == h2(static_cast<under_type>(i)));
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}
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}
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int main(int, char**)
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{
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test<Cardinals>();
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test<Colors>();
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test<ShortColors>();
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test<LongColors>();
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test<EightBitColors>();
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test<Fruits>();
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return 0;
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}
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