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100a39d169
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@284321 91177308-0d34-0410-b5e6-96231b3b80d8
59 lines
1.9 KiB
C++
59 lines
1.9 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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// UNSUPPORTED: c++98, c++03, c++11, c++14
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// <any>
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// template <class ValueType>
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// ValueType const any_cast(any const&);
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//
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// template <class ValueType>
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// ValueType any_cast(any &);
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//
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// template <class ValueType>
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// ValueType any_cast(any &&);
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// Test instantiating the any_cast with a non-copyable type.
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#include <any>
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using std::any;
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using std::any_cast;
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struct no_copy
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{
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no_copy() {}
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no_copy(no_copy &&) {}
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no_copy(no_copy const &) = delete;
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};
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struct no_move {
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no_move() {}
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no_move(no_move&&) = delete;
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no_move(no_move const&) {}
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};
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int main() {
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any a;
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// expected-error@any:* {{static_assert failed "ValueType is required to be an lvalue reference or a CopyConstructible type"}}
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// expected-error@any:* {{static_cast from 'no_copy' to 'no_copy' uses deleted function}}
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any_cast<no_copy>(static_cast<any&>(a)); // expected-note {{requested here}}
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// expected-error@any:* {{static_assert failed "ValueType is required to be a const lvalue reference or a CopyConstructible type"}}
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// expected-error@any:* {{static_cast from 'const no_copy' to 'no_copy' uses deleted function}}
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any_cast<no_copy>(static_cast<any const&>(a)); // expected-note {{requested here}}
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any_cast<no_copy>(static_cast<any &&>(a)); // OK
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// expected-error@any:* {{static_assert failed "ValueType is required to be an rvalue reference or a CopyConstructible type"}}
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// expected-error@any:* {{static_cast from 'typename remove_reference<no_move &>::type' (aka 'no_move') to 'no_move' uses deleted function}}
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any_cast<no_move>(static_cast<any &&>(a));
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}
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