c9535d7b61
* `libcxx/test/std/algorithms/alg.nonmodifying/alg.find/find.pass.cpp`
emits a bunch of warnings, all caused by what appears to be intentional
code:
+ Silence MSVC warning C4245: conversion from `'int'` to `'wchar_t'`,
signed/unsigned mismatch
- Caused by: `test<U>(0, -1);`
+ Silence MSVC warning C4305: 'argument': truncation from `'int'` to
`'bool'`
- Caused by: `test<U>(0, -1);`
+ Silence MSVC warning C4310: cast truncates constant value
- Caused by: `test<U>(T(-129), U(-129));`
+ Silence MSVC warning C4805: `'=='`: unsafe mix of type `'char'` and
type `'bool'` in operation
- Caused by: `bool expect_match = val == to_find;`
*
`libcxx/test/std/algorithms/alg.nonmodifying/alg.fold/left_folds.pass.cpp`
+ Silence MSVC warning C4244: 'argument': conversion from `'double'` to
`'const int'`, possible loss of data
- Caused by `[](int const x, double const y) { return x + y; }`
deliberately being given `double`s to truncate.
*
`libcxx/test/std/numerics/numeric.ops/numeric.ops.midpoint/midpoint.pointer.pass.cpp`
+ Silence MSVC warnings about C++20 deprecated `volatile`.
- Caused by: `runtime_test< volatile T>();`
99 lines
3.2 KiB
C++
99 lines
3.2 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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//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// MSVC warning C5215: a function parameter with a volatile qualified type is deprecated in C++20
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// MSVC warning C5216: a volatile qualified return type is deprecated in C++20
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// ADDITIONAL_COMPILE_FLAGS(cl-style-warnings): /wd5215 /wd5216
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// <numeric>
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// template <class _Tp>
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// _Tp* midpoint(_Tp* __a, _Tp* __b) noexcept
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//
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#include <numeric>
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#include <cassert>
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#include "test_macros.h"
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template <typename T>
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constexpr void constexpr_test()
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{
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constexpr T array[1000] = {};
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ASSERT_SAME_TYPE(decltype(std::midpoint(array, array)), const T*);
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ASSERT_NOEXCEPT( std::midpoint(array, array));
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static_assert(std::midpoint(array, array) == array, "");
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static_assert(std::midpoint(array, array + 1000) == array + 500, "");
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static_assert(std::midpoint(array, array + 9) == array + 4, "");
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static_assert(std::midpoint(array, array + 10) == array + 5, "");
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static_assert(std::midpoint(array, array + 11) == array + 5, "");
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static_assert(std::midpoint(array + 9, array) == array + 5, "");
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static_assert(std::midpoint(array + 10, array) == array + 5, "");
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static_assert(std::midpoint(array + 11, array) == array + 6, "");
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}
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template <typename T>
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void runtime_test()
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{
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T array[1000] = {}; // we need an array to make valid pointers
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ASSERT_SAME_TYPE(decltype(std::midpoint(array, array)), T*);
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ASSERT_NOEXCEPT( std::midpoint(array, array));
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assert(std::midpoint(array, array) == array);
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assert(std::midpoint(array, array + 1000) == array + 500);
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assert(std::midpoint(array, array + 9) == array + 4);
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assert(std::midpoint(array, array + 10) == array + 5);
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assert(std::midpoint(array, array + 11) == array + 5);
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assert(std::midpoint(array + 9, array) == array + 5);
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assert(std::midpoint(array + 10, array) == array + 5);
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assert(std::midpoint(array + 11, array) == array + 6);
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// explicit instantiation
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ASSERT_SAME_TYPE(decltype(std::midpoint<T>(array, array)), T*);
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ASSERT_NOEXCEPT(std::midpoint<T>(array, array));
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assert(std::midpoint<T>(array, array) == array);
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assert(std::midpoint<T>(array, array + 1000) == array + 500);
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}
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template <typename T>
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void pointer_test()
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{
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runtime_test< T>();
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runtime_test<const T>();
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runtime_test< volatile T>();
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runtime_test<const volatile T>();
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// The constexpr tests are always const, but we can test them anyway.
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constexpr_test< T>();
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constexpr_test<const T>();
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// GCC 9.0.1 (unreleased as of 2019-03) barfs on this, but we have a bot for it.
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// Uncomment when gcc 9.1 is released
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#ifndef TEST_COMPILER_GCC
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constexpr_test< volatile T>();
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constexpr_test<const volatile T>();
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#endif
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}
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int main(int, char**)
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{
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pointer_test<char>();
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pointer_test<int>();
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pointer_test<double>();
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return 0;
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}
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