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locks; strict;
comment	@// @;


1.2
date	2021.05.30.03.29.06;	author joerg;	state dead;
branches;
next	1.1;
commitid	Z2BWNc6JrDmRz7VC;

1.1
date	2015.08.20.09.31.51;	author joerg;	state Exp;
branches
	1.1.1.1;
next	;
commitid	ejnZ8WhR0kK5qZxy;

1.1.1.1
date	2015.08.20.09.31.51;	author joerg;	state Exp;
branches
	1.1.1.1.22.1;
next	;
commitid	ejnZ8WhR0kK5qZxy;

1.1.1.1.22.1
date	2021.05.31.22.12.31;	author cjep;	state dead;
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next	;
commitid	eWz9SBW0XqKjJlVC;


desc
@@


1.2
log
@Remove old version of libc++, migrated to external/apache2/dist/libcxx
to match the rest of the mono-repo imports.
@
text
@//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//


// <optional>

// template <class T> constexpr bool operator==(const optional<T>& x, nullopt_t) noexcept;
// template <class T> constexpr bool operator==(nullopt_t, const optional<T>& x) noexcept;

#include <experimental/optional>

int main()
{
#if _LIBCPP_STD_VER > 11
    using std::experimental::optional;
    using std::experimental::nullopt_t;
    using std::experimental::nullopt;
    
    {
    typedef int T;
    typedef optional<T> O;
    
    constexpr O o1;     // disengaged
    constexpr O o2{1};  // engaged

    static_assert (  (nullopt == o1), "" );
    static_assert ( !(nullopt == o2), "" );
    static_assert (  (o1 == nullopt), "" );
    static_assert ( !(o2 == nullopt), "" );

    static_assert (noexcept(nullopt == o1), "");
    static_assert (noexcept(o1 == nullopt), "");
    }
#endif
}
@


1.1
log
@Initial revision
@
text
@@


1.1.1.1
log
@Import libc++ r245547. Various bugfixes, improvements to the C++14
support and some experimental features from the library standard track.
@
text
@@


1.1.1.1.22.1
log
@sync with head
@
text
@@