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test/std/containers/Emplaceable.h test/std/containers/NotConstructible.h test/support/counting_predicates.hpp Replace unary_function/binary_function inheritance with typedefs. test/std/depr/depr.function.objects/depr.base/binary_function.pass.cpp test/std/depr/depr.function.objects/depr.base/unary_function.pass.cpp test/std/utilities/function.objects/func.require/binary_function.pass.cpp test/std/utilities/function.objects/func.require/unary_function.pass.cpp Mark these tests as requiring 98/03/11/14 because 17 removed unary_function/binary_function. test/std/thread/futures/futures.task/futures.task.members/ctor_func_alloc.pass.cpp test/std/thread/futures/futures.task/futures.task.nonmembers/uses_allocator.pass.cpp Mark these tests as requiring 11/14 because 17 removed packaged_task allocator support. test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.pass.cpp This test doesn't need to be skipped in C++17 mode. Only the construction of std::function from an allocator needs to be skipped in C++17 mode. test/std/utilities/function.objects/refwrap/refwrap.access/conversion.pass.cpp test/std/utilities/function.objects/refwrap/refwrap.assign/copy_assign.pass.cpp test/std/utilities/function.objects/refwrap/refwrap.const/copy_ctor.pass.cpp test/std/utilities/function.objects/refwrap/refwrap.const/type_ctor.pass.cpp When testing these reference_wrapper features, unary_function inheritance is totally irrelevant. test/std/utilities/function.objects/refwrap/weak_result.pass.cpp Define and use my_unary_function/my_binary_function to test the weak result type machinery (which is still present in C++17, although deprecated). test/support/msvc_stdlib_force_include.hpp Now we can test C++17 strictly, without enabling removed features. Fixes D36503. llvm-svn: 311705
98 lines
3.1 KiB
C++
98 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// <functional>
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// reference_wrapper
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// has weak result type
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#include <functional>
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#include <type_traits>
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template <class Arg, class Result>
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struct my_unary_function
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{ // std::unary_function was removed in C++17
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typedef Arg argument_type;
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typedef Result result_type;
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};
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template <class Arg1, class Arg2, class Result>
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struct my_binary_function
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{ // std::binary_function was removed in C++17
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typedef Arg1 first_argument_type;
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typedef Arg2 second_argument_type;
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typedef Result result_type;
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};
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class functor1
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: public my_unary_function<int, char>
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{
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};
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class functor2
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: public my_binary_function<char, int, double>
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{
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};
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class functor3
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: public my_unary_function<char, int>,
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public my_binary_function<char, int, double>
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{
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public:
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typedef float result_type;
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};
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class functor4
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: public my_unary_function<char, int>,
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public my_binary_function<char, int, double>
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{
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public:
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};
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class C {};
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template <class T>
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struct has_result_type
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{
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private:
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struct two {char _; char __;};
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template <class U> static two test(...);
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template <class U> static char test(typename U::result_type* = 0);
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public:
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static const bool value = sizeof(test<T>(0)) == 1;
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};
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int main()
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{
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static_assert((std::is_same<std::reference_wrapper<functor1>::result_type,
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char>::value), "");
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static_assert((std::is_same<std::reference_wrapper<functor2>::result_type,
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double>::value), "");
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static_assert((std::is_same<std::reference_wrapper<functor3>::result_type,
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float>::value), "");
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static_assert((std::is_same<std::reference_wrapper<void()>::result_type,
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void>::value), "");
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static_assert((std::is_same<std::reference_wrapper<int*(double*)>::result_type,
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int*>::value), "");
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static_assert((std::is_same<std::reference_wrapper<void(*)()>::result_type,
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void>::value), "");
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static_assert((std::is_same<std::reference_wrapper<int*(*)(double*)>::result_type,
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int*>::value), "");
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static_assert((std::is_same<std::reference_wrapper<int*(C::*)(double*)>::result_type,
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int*>::value), "");
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static_assert((std::is_same<std::reference_wrapper<int (C::*)(double*) const volatile>::result_type,
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int>::value), "");
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static_assert((std::is_same<std::reference_wrapper<C()>::result_type,
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C>::value), "");
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static_assert(has_result_type<std::reference_wrapper<functor3> >::value, "");
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static_assert(!has_result_type<std::reference_wrapper<functor4> >::value, "");
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static_assert(!has_result_type<std::reference_wrapper<C> >::value, "");
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}
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