29 lines
775 B
C++
29 lines
775 B
C++
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//===----------------------------------------------------------------------===//
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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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// <optional>
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// A program that necessitates the instantiation of template optional for
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// (possibly cv-qualified) in_place_t is ill-formed.
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#include <experimental/optional>
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int main()
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{
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#if _LIBCPP_STD_VER > 11
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using std::experimental::optional;
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using std::experimental::in_place_t;
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using std::experimental::in_place;
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optional<const in_place_t> opt;
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#else
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#error
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#endif // _LIBCPP_STD_VER > 11
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}
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