091c33b1f5
The SFINAE isn't required, since the primary `tuple` class already does the SFINAE checks. This removes a bit of code that was only used for these constraints. This also moves the `tuple_element` specialization for `tuple` to `__fwd/tuple.h` to avoid a dependency on `__tuple/sfinae_helpers.h` (which should be moved in a follow-up).
27 lines
879 B
C++
27 lines
879 B
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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// <tuple>
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// template <class... Types> class tuple;
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// template <size_t I, class... Types>
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// struct tuple_element<I, tuple<Types...> >
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// {
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// typedef Ti type;
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// };
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// UNSUPPORTED: c++03
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#include <tuple>
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using T = std::tuple<int, long, void*>;
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using E1 = typename std::tuple_element<1, T &>::type; // expected-error{{undefined template}}
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using E2 = typename std::tuple_element<3, T>::type;
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using E3 = typename std::tuple_element<4, T const>::type; // expected-error@*:* 2 {{out of bounds index}}
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