Implement N3672, optional<T>.

llvm-svn: 189772
This commit is contained in:
Howard Hinnant 2013-09-02 20:30:37 +00:00
parent 37b08114bd
commit e7d746d8b9
65 changed files with 4535 additions and 4 deletions

697
libcxx/include/optional Normal file
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@ -0,0 +1,697 @@
// -*- C++ -*-
//===-------------------------- optional ----------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_OPTIONAL
#define _LIBCPP_OPTIONAL
/*
optional synopsis
// C++1y
#include <initializer_list>
namespace std
{
// optional for object types
template <class T>
class optional
{
public:
typedef T value_type;
// constructors
constexpr optional() noexcept;
constexpr optional(nullopt_t) noexcept;
optional(const optional&);
optional(optional&&) noexcept(is_nothrow_move_constructible<T>::value);
constexpr optional(const T&);
constexpr optional(T&&);
template <class... Args> constexpr explicit optional(in_place_t, Args&&...);
template <class U, class... Args>
constexpr explicit optional(in_place_t, initializer_list<U>, Args&&...);
// destructor
~optional();
// assignment
optional& operator=(nullopt_t) noexcept;
optional& operator=(const optional&);
optional& operator=(optional&&)
noexcept(is_nothrow_move_assignable<T>::value &&
is_nothrow_move_constructible<T>::value);
template <class U> optional& operator=(U&&);
template <class... Args> void emplace(Args&&...);
template <class U, class... Args> void emplace(initializer_list<U>, Args&&...);
// swap
void swap(optional&)
noexcept(is_nothrow_move_constructible<T>::value &&
noexcept(swap(declval<T&>(), declval<T&>())));
// observers
constexpr T const* operator->() const;
T* operator->();
constexpr T const& operator*() const;
T& operator*();
constexpr explicit operator bool() const noexcept;
constexpr T const& value() const;
T& value();
template <class U> constexpr T value_or(U&&) const&;
template <class U> T value_or(U&&) &&;
};
// In-place construction
struct in_place_t{};
constexpr in_place_t in_place{};
// Disengaged state indicator
struct nullopt_t{see below};
constexpr nullopt_t nullopt(unspecified);
// class bad_optional_access
class bad_optional_access
: public logic_error
{
public:
explicit bad_optional_access(const string& what_arg);
explicit bad_optional_access(const char* what_arg);
};
// Relational operators
template <class T> constexpr bool operator==(const optional<T>&, const optional<T>&);
template <class T> constexpr bool operator< (const optional<T>&, const optional<T>&);
// Comparison with nullopt
template <class T> constexpr bool operator==(const optional<T>&, nullopt_t) noexcept;
template <class T> constexpr bool operator==(nullopt_t, const optional<T>&) noexcept;
template <class T> constexpr bool operator<(const optional<T>&, nullopt_t) noexcept;
template <class T> constexpr bool operator<(nullopt_t, const optional<T>&) noexcept;
// Comparison with T
template <class T> constexpr bool operator==(const optional<T>&, const T&);
template <class T> constexpr bool operator==(const T&, const optional<T>&);
template <class T> constexpr bool operator<(const optional<T>&, const T&);
template <class T> constexpr bool operator<(const T&, const optional<T>&);
// Specialized algorithms
template <class T> void swap(optional<T>&, optional<T>&) noexcept(see below);
template <class T> constexpr optional<typename decay<T>::type> make_optional(T&&);
// hash support
template <class T> struct hash;
template <class T> struct hash<optional<T>>;
} // std
*/
#include <__config>
#include <functional>
#include <stdexcept>
namespace std // purposefully not using versioning namespace
{
class _LIBCPP_EXCEPTION_ABI bad_optional_access
: public logic_error
{
public:
#if _LIBCPP_STD_VER > 11
_LIBCPP_INLINE_VISIBILITY explicit bad_optional_access(const string& __arg)
: logic_error(__arg) {}
_LIBCPP_INLINE_VISIBILITY explicit bad_optional_access(const char* __arg)
: logic_error(__arg) {}
_LIBCPP_INLINE_VISIBILITY bad_optional_access(const bad_optional_access&) noexcept = default;
_LIBCPP_INLINE_VISIBILITY bad_optional_access& operator=(const bad_optional_access&) noexcept = default;
#else
private:
bad_optional_access(const bad_optional_access&);
bad_optional_access& operator=(const bad_optional_access&);
public:
#endif // _LIBCPP_STD_VER > 11
// Get the key function ~bad_optional_access() into the dylib even if not compiling for C++1y
virtual ~bad_optional_access() _NOEXCEPT;
};
} // std
#if _LIBCPP_STD_VER > 11
#include <initializer_list>
#include <type_traits>
#include <new>
#include <__functional_base>
#include <__undef_min_max>
#ifdef _LIBCPP_DEBUG
# include <__debug>
#else
# define _LIBCPP_ASSERT(x, m) ((void)0)
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
struct in_place_t {};
constexpr in_place_t in_place{};
struct nullopt_t
{
explicit constexpr nullopt_t(int) noexcept {}
};
constexpr nullopt_t nullopt{0};
template <class _Tp, bool = is_trivially_destructible<_Tp>::value>
class __optional_storage
{
protected:
typedef _Tp value_type;
union
{
char __null_state_;
value_type __val_;
};
bool __engaged_ = false;
_LIBCPP_INLINE_VISIBILITY
~__optional_storage()
{
if (__engaged_)
__val_.~value_type();
}
_LIBCPP_INLINE_VISIBILITY
constexpr __optional_storage() noexcept
: __null_state_('\0') {}
_LIBCPP_INLINE_VISIBILITY
__optional_storage(const __optional_storage& __x)
: __engaged_(__x.__engaged_)
{
if (__engaged_)
::new(_VSTD::addressof(__val_)) value_type(__x.__val_);
}
_LIBCPP_INLINE_VISIBILITY
__optional_storage(__optional_storage&& __x)
noexcept(is_nothrow_move_constructible<value_type>::value)
: __engaged_(__x.__engaged_)
{
if (__engaged_)
::new(_VSTD::addressof(__val_)) value_type(_VSTD::move(__x.__val_));
}
_LIBCPP_INLINE_VISIBILITY
constexpr __optional_storage(const value_type& __v)
: __val_(__v),
__engaged_(true) {}
_LIBCPP_INLINE_VISIBILITY
constexpr __optional_storage(value_type&& __v)
: __val_(_VSTD::move(__v)),
__engaged_(true) {}
template <class... _Args>
_LIBCPP_INLINE_VISIBILITY
constexpr
explicit __optional_storage(in_place_t, _Args&&... __args)
: __val_(_VSTD::forward<_Args>(__args)...),
__engaged_(true) {}
};
template <class _Tp>
class __optional_storage<_Tp, true>
{
protected:
typedef _Tp value_type;
union
{
char __null_state_;
value_type __val_;
};
bool __engaged_ = false;
_LIBCPP_INLINE_VISIBILITY
constexpr __optional_storage() noexcept
: __null_state_('\0') {}
_LIBCPP_INLINE_VISIBILITY
__optional_storage(const __optional_storage& __x)
: __engaged_(__x.__engaged_)
{
if (__engaged_)
::new(_VSTD::addressof(__val_)) value_type(__x.__val_);
}
_LIBCPP_INLINE_VISIBILITY
__optional_storage(__optional_storage&& __x)
noexcept(is_nothrow_move_constructible<value_type>::value)
: __engaged_(__x.__engaged_)
{
if (__engaged_)
::new(_VSTD::addressof(__val_)) value_type(_VSTD::move(__x.__val_));
}
_LIBCPP_INLINE_VISIBILITY
constexpr __optional_storage(const value_type& __v)
: __val_(__v),
__engaged_(true) {}
_LIBCPP_INLINE_VISIBILITY
constexpr __optional_storage(value_type&& __v)
: __val_(_VSTD::move(__v)),
__engaged_(true) {}
template <class... _Args>
_LIBCPP_INLINE_VISIBILITY
constexpr
explicit __optional_storage(in_place_t, _Args&&... __args)
: __val_(_VSTD::forward<_Args>(__args)...),
__engaged_(true) {}
};
template <class _Tp>
class optional
: private __optional_storage<_Tp>
{
typedef __optional_storage<_Tp> __base;
public:
typedef _Tp value_type;
static_assert(!is_reference<value_type>::value,
"Instantiation of optional with a reference type is ill-formed.");
static_assert(!is_same<typename remove_cv<value_type>::type, in_place_t>::value,
"Instantiation of optional with a in_place_t type is ill-formed.");
static_assert(!is_same<typename remove_cv<value_type>::type, nullopt_t>::value,
"Instantiation of optional with a nullopt_t type is ill-formed.");
static_assert(is_object<value_type>::value,
"Instantiation of optional with a non-object type is undefined behavior.");
static_assert(is_nothrow_destructible<value_type>::value,
"Instantiation of optional with an object type that is not noexcept destructible is undefined behavior.");
_LIBCPP_INLINE_VISIBILITY constexpr optional() noexcept {}
_LIBCPP_INLINE_VISIBILITY optional(const optional&) = default;
_LIBCPP_INLINE_VISIBILITY optional(optional&&) = default;
_LIBCPP_INLINE_VISIBILITY ~optional() = default;
_LIBCPP_INLINE_VISIBILITY constexpr optional(nullopt_t) noexcept {}
_LIBCPP_INLINE_VISIBILITY constexpr optional(const value_type& __v)
: __base(__v) {}
_LIBCPP_INLINE_VISIBILITY constexpr optional(value_type&& __v)
: __base(_VSTD::move(__v)) {}
template <class... _Args,
class = typename enable_if
<
is_constructible<value_type, _Args...>::value
>::type
>
_LIBCPP_INLINE_VISIBILITY
constexpr
explicit optional(in_place_t, _Args&&... __args)
: __base(in_place, _VSTD::forward<_Args>(__args)...) {}
template <class _Up, class... _Args,
class = typename enable_if
<
is_constructible<value_type, initializer_list<_Up>&, _Args...>::value
>::type
>
_LIBCPP_INLINE_VISIBILITY
constexpr
explicit optional(in_place_t, initializer_list<_Up> __il, _Args&&... __args)
: __base(in_place, __il, _VSTD::forward<_Args>(__args)...) {}
_LIBCPP_INLINE_VISIBILITY
optional& operator=(nullopt_t) noexcept
{
if (this->__engaged_)
{
this->__val_.~value_type();
this->__engaged_ = false;
}
return *this;
}
_LIBCPP_INLINE_VISIBILITY
optional&
operator=(const optional& __opt)
{
if (this->__engaged_ == __opt.__engaged_)
{
if (this->__engaged_)
this->__val_ = __opt.__val_;
}
else
{
if (this->__engaged_)
this->__val_.~value_type();
else
::new(_VSTD::addressof(this->__val_)) value_type(__opt.__val_);
this->__engaged_ = __opt.__engaged_;
}
return *this;
}
_LIBCPP_INLINE_VISIBILITY
optional&
operator=(optional&& __opt)
noexcept(is_nothrow_move_assignable<value_type>::value &&
is_nothrow_move_constructible<value_type>::value)
{
if (this->__engaged_ == __opt.__engaged_)
{
if (this->__engaged_)
this->__val_ = _VSTD::move(__opt.__val_);
}
else
{
if (this->__engaged_)
this->__val_.~value_type();
else
::new(_VSTD::addressof(this->__val_)) value_type(_VSTD::move(__opt.__val_));
this->__engaged_ = __opt.__engaged_;
}
return *this;
}
template <class _Up,
class = typename enable_if
<
is_same<typename remove_reference<_Up>::type, value_type>::value &&
is_constructible<value_type, _Up>::value &&
is_assignable<value_type&, _Up>::value
>::type
>
_LIBCPP_INLINE_VISIBILITY
optional&
operator=(_Up&& __v)
{
if (this->__engaged_)
this->__val_ = _VSTD::forward<_Up>(__v);
else
{
::new(_VSTD::addressof(this->__val_)) value_type(_VSTD::forward<_Up>(__v));
this->__engaged_ = true;
}
return *this;
}
template <class... _Args,
class = typename enable_if
<
is_constructible<value_type, _Args...>::value
>::type
>
_LIBCPP_INLINE_VISIBILITY
void
emplace(_Args&&... __args)
{
*this = nullopt;
::new(_VSTD::addressof(this->__val_)) value_type(_VSTD::forward<_Args>(__args)...);
this->__engaged_ = true;
}
template <class _Up, class... _Args,
class = typename enable_if
<
is_constructible<value_type, initializer_list<_Up>&, _Args...>::value
>::type
>
_LIBCPP_INLINE_VISIBILITY
void
emplace(initializer_list<_Up> __il, _Args&&... __args)
{
*this = nullopt;
::new(_VSTD::addressof(this->__val_)) value_type(__il, _VSTD::forward<_Args>(__args)...);
this->__engaged_ = true;
}
_LIBCPP_INLINE_VISIBILITY
void
swap(optional& __opt)
noexcept(is_nothrow_move_constructible<value_type>::value &&
__is_nothrow_swappable<value_type>::value)
{
using _VSTD::swap;
if (this->__engaged_ == __opt.__engaged_)
{
if (this->__engaged_)
swap(this->__val_, __opt.__val_);
}
else
{
if (this->__engaged_)
{
::new(_VSTD::addressof(__opt.__val_)) value_type(_VSTD::move(this->__val_));
this->__val_.~value_type();
}
else
{
::new(_VSTD::addressof(this->__val_)) value_type(_VSTD::move(__opt.__val_));
__opt.__val_.~value_type();
}
swap(this->__engaged_, __opt.__engaged_);
}
}
_LIBCPP_INLINE_VISIBILITY
constexpr
value_type const*
operator->() const
{
_LIBCPP_ASSERT(this->__engaged_, "optional operator-> called for disengaged value");
return __operator_arrow(__has_operator_addressof<value_type>{});
}
_LIBCPP_INLINE_VISIBILITY
value_type*
operator->()
{
_LIBCPP_ASSERT(this->__engaged_, "optional operator-> called for disengaged value");
return _VSTD::addressof(this->__val_);
}
_LIBCPP_INLINE_VISIBILITY
constexpr
const value_type&
operator*() const
{
_LIBCPP_ASSERT(this->__engaged_, "optional operator* called for disengaged value");
return this->__val_;
}
_LIBCPP_INLINE_VISIBILITY
value_type&
operator*()
{
_LIBCPP_ASSERT(this->__engaged_, "optional operator* called for disengaged value");
return this->__val_;
}
_LIBCPP_INLINE_VISIBILITY
constexpr explicit operator bool() const noexcept {return this->__engaged_;}
_LIBCPP_INLINE_VISIBILITY
constexpr value_type const& value() const
{
if (!this->__engaged_)
throw bad_optional_access("optional<T>::value: not engaged");
return this->__val_;
}
_LIBCPP_INLINE_VISIBILITY
value_type& value()
{
if (!this->__engaged_)
throw bad_optional_access("optional<T>::value: not engaged");
return this->__val_;
}
template <class _Up>
_LIBCPP_INLINE_VISIBILITY
constexpr value_type value_or(_Up&& __v) const&
{
static_assert(is_copy_constructible<value_type>::value,
"optional<T>::value_or: T must be copy constructible");
static_assert(is_convertible<_Up, value_type>::value,
"optional<T>::value_or: U must be convertible to T");
return this->__engaged_ ? this->__val_ :
static_cast<value_type>(_VSTD::forward<_Up>(__v));
}
template <class _Up>
_LIBCPP_INLINE_VISIBILITY
value_type value_or(_Up&& __v) &&
{
static_assert(is_move_constructible<value_type>::value,
"optional<T>::value_or: T must be move constructible");
static_assert(is_convertible<_Up, value_type>::value,
"optional<T>::value_or: U must be convertible to T");
return this->__engaged_ ? _VSTD::move(this->__val_) :
static_cast<value_type>(_VSTD::forward<_Up>(__v));
}
private:
_LIBCPP_INLINE_VISIBILITY
value_type const*
__operator_arrow(true_type) const
{
return _VSTD::addressof(this->__val_);
}
_LIBCPP_INLINE_VISIBILITY
constexpr
value_type const*
__operator_arrow(false_type) const
{
return &this->__val_;
}
};
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator==(const optional<_Tp>& __x, const optional<_Tp>& __y)
{
if (static_cast<bool>(__x) != static_cast<bool>(__y))
return false;
if (!static_cast<bool>(__x))
return true;
return *__x == *__y;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator<(const optional<_Tp>& __x, const optional<_Tp>& __y)
{
if (!static_cast<bool>(__y))
return false;
if (!static_cast<bool>(__x))
return true;
return less<_Tp>{}(*__x, *__y);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator==(const optional<_Tp>& __x, nullopt_t) noexcept
{
return !static_cast<bool>(__x);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator==(nullopt_t, const optional<_Tp>& __x) noexcept
{
return !static_cast<bool>(__x);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator<(const optional<_Tp>&, nullopt_t) noexcept
{
return false;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator<(nullopt_t, const optional<_Tp>& __x) noexcept
{
return static_cast<bool>(__x);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator==(const optional<_Tp>& __x, const _Tp& __v)
{
return static_cast<bool>(__x) ? *__x == __v : false;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator==(const _Tp& __v, const optional<_Tp>& __x)
{
return static_cast<bool>(__x) ? *__x == __v : false;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator<(const optional<_Tp>& __x, const _Tp& __v)
{
return static_cast<bool>(__x) ? less<_Tp>{}(*__x, __v) : true;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
bool
operator<(const _Tp& __v, const optional<_Tp>& __x)
{
return static_cast<bool>(__x) ? less<_Tp>{}(__v, *__x) : false;
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(optional<_Tp>& __x, optional<_Tp>& __y) noexcept(noexcept(__x.swap(__y)))
{
__x.swap(__y);
}
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
constexpr
optional<typename decay<_Tp>::type>
make_optional(_Tp&& __v)
{
return optional<typename decay<_Tp>::type>(_VSTD::forward<_Tp>(__v));
}
template <class _Tp>
struct _LIBCPP_TYPE_VIS_ONLY hash<optional<_Tp> >
{
typedef optional<_Tp> argument_type;
typedef size_t result_type;
_LIBCPP_INLINE_VISIBILITY
result_type operator()(const argument_type& __opt) const _NOEXCEPT
{
return static_cast<bool>(__opt) ? hash<_Tp>()(*__opt) : 0;
}
};
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_STD_VER > 11
#endif // _LIBCPP_ARRAY

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@ -1378,8 +1378,10 @@ template <class ..._Tp> using common_type_t = typename common_type<_Tp...>::type
// is_assignable
template<typename, typename T> struct __select_2nd { typedef T type; };
template <class _Tp, class _Arg>
decltype((_VSTD::declval<_Tp>() = _VSTD::declval<_Arg>(), true_type()))
typename __select_2nd<decltype((_VSTD::declval<_Tp>() = _VSTD::declval<_Arg>())), true_type>::type
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
__is_assignable_test(_Tp&&, _Arg&&);
#else
@ -1969,8 +1971,6 @@ class _LIBCPP_TYPE_VIS_ONLY result_of<_Fn(_A0, _A1, _A2)>
// main is_constructible test
template<typename, typename T> struct __select_2nd { typedef T type; };
template <class _Tp, class ..._Args>
typename __select_2nd<decltype(_VSTD::move(_Tp(_VSTD::declval<_Args>()...))), true_type>::type
__is_constructible_test(_Tp&&, _Args&& ...);
@ -3258,6 +3258,27 @@ struct underlying_type
#endif // _LIBCXX_UNDERLYING_TYPE
#ifndef _LIBCPP_HAS_NO_ADVANCED_SFINAE
template <class _Tp>
struct __has_operator_addressof_imp
{
template <class>
static auto __test(__any) -> false_type;
template <class _Up>
static auto __test(_Up* __u)
-> typename __select_2nd<decltype(__u->operator&()), true_type>::type;
static const bool value = decltype(__test<_Tp>(nullptr))::value;
};
template <class _Tp>
struct __has_operator_addressof
: public integral_constant<bool, __has_operator_addressof_imp<_Tp>::value>
{};
#endif // _LIBCPP_HAS_NO_ADVANCED_SFINAE
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_TYPE_TRAITS

25
libcxx/src/optional.cpp Normal file
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@ -0,0 +1,25 @@
//===------------------------ optional.cpp --------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
#include "optional"
namespace std // purposefully not using versioning namespace
{
#ifdef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
bad_optional_access::~bad_optional_access() {}
#else
bad_optional_access::~bad_optional_access() = default;
#endif
} // std

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@ -0,0 +1,53 @@
//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// type_traits
// extension
// template <typename _Tp> struct __has_operator_addressof
#include <type_traits>
#ifndef _LIBCPP_HAS_NO_CONSTEXPR
struct A
{
};
struct B
{
constexpr B* operator&() const;
};
struct D;
struct C
{
template <class U>
D operator,(U&&);
};
struct E
{
constexpr C operator&() const;
};
#endif // _LIBCPP_HAS_NO_CONSTEXPR
int main()
{
#ifndef _LIBCPP_HAS_NO_CONSTEXPR
static_assert(std::__has_operator_addressof<int>::value == false, "");
static_assert(std::__has_operator_addressof<A>::value == false, "");
static_assert(std::__has_operator_addressof<B>::value == true, "");
static_assert(std::__has_operator_addressof<E>::value == true, "");
#endif // _LIBCPP_HAS_NO_CONSTEXPR
}

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@ -34,6 +34,19 @@ void test_is_not_assignable()
static_assert((!std::is_assignable<T, U>::value), "");
}
struct D;
struct C
{
template <class U>
D operator,(U&&);
};
struct E
{
C operator=(int);
};
int main()
{
test_is_assignable<int&, int&> ();
@ -41,6 +54,7 @@ int main()
test_is_assignable<int&, double> ();
test_is_assignable<B, A> ();
test_is_assignable<void*&, void*> ();
test_is_assignable<E, int> ();
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
test_is_not_assignable<int, int&> ();

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@ -0,0 +1,31 @@
//===----------------------------------------------------------------------===//
//
// 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>
// class bad_optional_access;
// explicit bad_optional_access(const char* what_arg);
#include <optional>
#include <string>
#include <cstring>
#include <cassert>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
const char* s = "message";
std::bad_optional_access e(s);
assert(std::strcmp(e.what(), s) == 0);
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,37 @@
//===----------------------------------------------------------------------===//
//
// 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>
// class bad_optional_access;
// bad_optional_access& operator=(const bad_optional_access&);
#include <optional>
#include <string>
#include <cstring>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
static_assert(std::is_nothrow_copy_assignable<std::bad_optional_access>::value, "");
const std::string s1("one message");
const std::string s2("another message");
std::bad_optional_access e1(s1);
std::bad_optional_access e2(s2);
assert(std::strcmp(e1.what(), e2.what()) != 0);
e1 = e2;
assert(std::strcmp(e1.what(), e2.what()) == 0);
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// class bad_optional_access;
// bad_optional_access(const bad_optional_access&);
#include <optional>
#include <string>
#include <cstring>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
static_assert(std::is_nothrow_copy_constructible<std::bad_optional_access>::value, "");
const std::string s("another message");
std::bad_optional_access e1(s);
std::bad_optional_access e2 = e1;
assert(std::strcmp(e1.what(), e2.what()) == 0);
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// class bad_optional_access is not default constructible
#include <optional>
#include <type_traits>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
static_assert(!std::is_default_constructible<std::bad_optional_access>::value, "");
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// class bad_optional_access : public logic_error
#include <optional>
#include <type_traits>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
static_assert(std::is_base_of<std::logic_error, std::bad_optional_access>::value, "");
static_assert(std::is_convertible<std::bad_optional_access*, std::logic_error*>::value, "");
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// class bad_optional_access;
// explicit bad_optional_access(const string& what_arg);
#include <optional>
#include <string>
#include <cstring>
#include <cassert>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
const std::string s("message");
std::bad_optional_access e(s);
assert(std::strcmp(e.what(), s.c_str()) == 0);
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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, const T& v);
// template <class T> constexpr bool operator==(const T& v, const optional<T>& x);
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
typedef std::optional<T> O;
constexpr T val(2);
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
constexpr O o3{val}; // engaged
static_assert ( !(o1 == 1), "" );
static_assert ( o2 == 1, "" );
static_assert ( !(o3 == 1), "" );
static_assert ( o3 == 2 , "" );
static_assert ( o3 == val, "" );
static_assert ( !(1 == o1), "" );
static_assert ( 1 == o2, "" );
static_assert ( !(1 == o3), "" );
static_assert ( 2 == o3 , "" );
static_assert ( val == o3 , "" );
}
#endif
}

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//===----------------------------------------------------------------------===//
//
// 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, const T& v);
// template <class T> constexpr bool operator<(const T& v, const optional<T>& x);
#include <optional>
#if _LIBCPP_STD_VER > 11
struct X
{
int i_;
constexpr X(int i) : i_(i) {}
};
namespace std
{
template <>
struct less<X>
{
constexpr
bool
operator()(const X& x, const X& y) const
{
return x.i_ < y.i_;
}
};
}
#endif
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef X T;
typedef std::optional<T> O;
constexpr T val(2);
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
constexpr O o3{val}; // engaged
static_assert ( o1 < T(1) , "" );
static_assert ( !(o2 < T(1)), "" );
static_assert ( !(o3 < T(1)), "" );
static_assert ( o2 < T(2) , "" );
static_assert ( o2 < T(val), "" );
static_assert ( o3 < T(3) , "" );
static_assert ( !(T(1) < o1), "" );
static_assert ( !(T(1) < o2), "" );
static_assert ( T(1) < o3 , "" );
static_assert ( !(T(2) < o2), "" );
static_assert (!(T(val) < o2), "" );
static_assert ( !(T(3) < o3), "" );
}
#endif
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
int main()
{
}

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//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
int main()
{
}

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//===----------------------------------------------------------------------===//
//
// 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> struct hash<optional<T>>;
#include <optional>
#include <string>
#include <memory>
#include <cassert>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
std::optional<T> opt;
assert(std::hash<std::optional<T>>{}(opt) == 0);
opt = 2;
assert(std::hash<std::optional<T>>{}(opt) == std::hash<T>{}(*opt));
}
{
typedef std::string T;
std::optional<T> opt;
assert(std::hash<std::optional<T>>{}(opt) == 0);
opt = std::string("123");
assert(std::hash<std::optional<T>>{}(opt) == std::hash<T>{}(*opt));
}
{
typedef std::unique_ptr<int> T;
std::optional<T> opt;
assert(std::hash<std::optional<T>>{}(opt) == 0);
opt = std::unique_ptr<int>(new int(3));
assert(std::hash<std::optional<T>>{}(opt) == std::hash<T>{}(*opt));
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// struct in_place_t{};
// constexpr in_place_t in_place{};
#include <optional>
#include <type_traits>
#if _LIBCPP_STD_VER > 11
constexpr
int
test(const std::in_place_t&)
{
return 3;
}
#endif
int main()
{
#if _LIBCPP_STD_VER > 11
static_assert((std::is_class<std::in_place_t>::value), "");
static_assert((std::is_empty<std::in_place_t>::value), "");
static_assert(test(std::in_place) == 3, "");
#endif
}

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//===----------------------------------------------------------------------===//
//
// 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 <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
typedef std::optional<T> O;
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
static_assert ( std::nullopt == o1 , "" );
static_assert ( !(std::nullopt == o2), "" );
static_assert ( o1 == std::nullopt , "" );
static_assert ( !(o2 == std::nullopt), "" );
static_assert (noexcept(std::nullopt == o1), "");
static_assert (noexcept(o1 == std::nullopt), "");
}
#endif
}

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//===----------------------------------------------------------------------===//
//
// 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 <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
typedef std::optional<T> O;
constexpr O o1; // disengaged
constexpr O o2{1}; // engaged
static_assert ( !(std::nullopt < o1), "" );
static_assert ( std::nullopt < o2 , "" );
static_assert ( !(o1 < std::nullopt), "" );
static_assert ( !(o2 < std::nullopt), "" );
static_assert (noexcept(std::nullopt < o1), "");
static_assert (noexcept(o1 < std::nullopt), "");
}
#endif
}

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//===----------------------------------------------------------------------===//
//
// 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>
// struct nullopt_t{see below};
// constexpr nullopt_t nullopt(unspecified);
#include <optional>
#include <type_traits>
#if _LIBCPP_STD_VER > 11
constexpr
int
test(const std::nullopt_t&)
{
return 3;
}
#endif
int main()
{
#if _LIBCPP_STD_VER > 11
static_assert((std::is_class<std::nullopt_t>::value), "");
static_assert((std::is_empty<std::nullopt_t>::value), "");
static_assert((std::is_literal_type<std::nullopt_t>::value), "");
static_assert((!std::is_default_constructible<std::nullopt_t>::value), "");
static_assert(test(std::nullopt) == 3, "");
#endif
}

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//===----------------------------------------------------------------------===//
//
// 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 U> optional<T>& operator=(U&& v);
#include <optional>
#include <type_traits>
#include <cassert>
#include <memory>
#if _LIBCPP_STD_VER > 11
struct X
{
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
static_assert(std::is_assignable<std::optional<int>, int>::value, "");
static_assert(std::is_assignable<std::optional<int>, int&>::value, "");
static_assert(std::is_assignable<std::optional<int>&, int>::value, "");
static_assert(std::is_assignable<std::optional<int>&, int&>::value, "");
static_assert(std::is_assignable<std::optional<int>&, const int&>::value, "");
static_assert(!std::is_assignable<const std::optional<int>&, const int&>::value, "");
static_assert(!std::is_assignable<std::optional<int>, X>::value, "");
{
std::optional<int> opt;
opt = 1;
assert(static_cast<bool>(opt) == true);
assert(*opt == 1);
}
{
std::optional<int> opt;
const int i = 2;
opt = i;
assert(static_cast<bool>(opt) == true);
assert(*opt == i);
}
{
std::optional<int> opt(3);
const int i = 2;
opt = i;
assert(static_cast<bool>(opt) == true);
assert(*opt == i);
}
{
std::optional<std::unique_ptr<int>> opt;
opt = std::unique_ptr<int>(new int(3));
assert(static_cast<bool>(opt) == true);
assert(**opt == 3);
}
{
std::optional<std::unique_ptr<int>> opt(std::unique_ptr<int>(new int(2)));
opt = std::unique_ptr<int>(new int(3));
assert(static_cast<bool>(opt) == true);
assert(**opt == 3);
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// optional<T>& operator=(const optional<T>& rhs);
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
static bool throw_now;
X() = default;
X(const X&)
{
if (throw_now)
throw 6;
}
};
bool X::throw_now = false;
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<int> opt;
constexpr std::optional<int> opt2;
opt = opt2;
static_assert(static_cast<bool>(opt2) == false, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
}
{
std::optional<int> opt;
constexpr std::optional<int> opt2(2);
opt = opt2;
static_assert(static_cast<bool>(opt2) == true, "");
static_assert(*opt2 == 2, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
assert(*opt == *opt2);
}
{
std::optional<int> opt(3);
constexpr std::optional<int> opt2;
opt = opt2;
static_assert(static_cast<bool>(opt2) == false, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
}
{
std::optional<int> opt(3);
constexpr std::optional<int> opt2(2);
opt = opt2;
static_assert(static_cast<bool>(opt2) == true, "");
static_assert(*opt2 == 2, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
assert(*opt == *opt2);
}
{
std::optional<X> opt;
std::optional<X> opt2(X{});
assert(static_cast<bool>(opt2) == true);
try
{
X::throw_now = true;
opt = opt2;
assert(false);
}
catch (int i)
{
assert(i == 6);
assert(static_cast<bool>(opt) == false);
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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... Args> void optional<T>::emplace(Args&&... args);
#include <optional>
#include <type_traits>
#include <cassert>
#include <memory>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
int j_ = 0;
public:
X() : i_(0) {}
X(int i) : i_(i) {}
X(int i, int j) : i_(i), j_(j) {}
friend bool operator==(const X& x, const X& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
class Y
{
public:
static bool dtor_called;
Y() = default;
~Y() {dtor_called = true;}
};
bool Y::dtor_called = false;
class Z
{
public:
static bool dtor_called;
Z() = default;
Z(int) {throw 6;}
~Z() {dtor_called = true;}
};
bool Z::dtor_called = false;
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<int> opt;
opt.emplace();
assert(static_cast<bool>(opt) == true);
assert(*opt == 0);
}
{
std::optional<int> opt;
opt.emplace(1);
assert(static_cast<bool>(opt) == true);
assert(*opt == 1);
}
{
std::optional<int> opt(2);
opt.emplace();
assert(static_cast<bool>(opt) == true);
assert(*opt == 0);
}
{
std::optional<int> opt(2);
opt.emplace(1);
assert(static_cast<bool>(opt) == true);
assert(*opt == 1);
}
{
std::optional<X> opt;
opt.emplace();
assert(static_cast<bool>(opt) == true);
assert(*opt == X());
}
{
std::optional<X> opt;
opt.emplace(1);
assert(static_cast<bool>(opt) == true);
assert(*opt == X(1));
}
{
std::optional<X> opt;
opt.emplace(1, 2);
assert(static_cast<bool>(opt) == true);
assert(*opt == X(1, 2));
}
{
std::optional<X> opt(X{3});
opt.emplace();
assert(static_cast<bool>(opt) == true);
assert(*opt == X());
}
{
std::optional<X> opt(X{3});
opt.emplace(1);
assert(static_cast<bool>(opt) == true);
assert(*opt == X(1));
}
{
std::optional<X> opt(X{3});
opt.emplace(1, 2);
assert(static_cast<bool>(opt) == true);
assert(*opt == X(1, 2));
}
{
Y y;
{
std::optional<Y> opt(y);
assert(Y::dtor_called == false);
opt.emplace();
assert(Y::dtor_called == true);
}
}
{
Z z;
std::optional<Z> opt(z);
try
{
assert(static_cast<bool>(opt) == true);
assert(Z::dtor_called == false);
opt.emplace(1);
}
catch (int i)
{
assert(i == 6);
assert(static_cast<bool>(opt) == false);
assert(Z::dtor_called == true);
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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 U, class... Args>
// void optional<T>::emplace(initializer_list<U> il, Args&&... args);
#include <optional>
#include <type_traits>
#include <cassert>
#include <vector>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
int j_ = 0;
public:
static bool dtor_called;
constexpr X() : i_(0) {}
constexpr X(int i) : i_(i) {}
constexpr X(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1]) {}
~X() {dtor_called = true;}
friend constexpr bool operator==(const X& x, const X& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
bool X::dtor_called = false;
class Y
{
int i_;
int j_ = 0;
public:
constexpr Y() : i_(0) {}
constexpr Y(int i) : i_(i) {}
constexpr Y(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1]) {}
friend constexpr bool operator==(const Y& x, const Y& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
class Z
{
int i_;
int j_ = 0;
public:
static bool dtor_called;
constexpr Z() : i_(0) {}
constexpr Z(int i) : i_(i) {}
constexpr Z(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1])
{throw 6;}
~Z() {dtor_called = true;}
friend constexpr bool operator==(const Z& x, const Z& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
bool Z::dtor_called = false;
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
X x;
{
std::optional<X> opt(x);
assert(X::dtor_called == false);
opt.emplace({1, 2});
assert(X::dtor_called == true);
assert(*opt == X({1, 2}));
}
}
{
std::optional<std::vector<int>> opt;
opt.emplace({1, 2, 3}, std::allocator<int>());
assert(static_cast<bool>(opt) == true);
assert(*opt == std::vector<int>({1, 2, 3}));
}
{
std::optional<Y> opt;
opt.emplace({1, 2});
assert(static_cast<bool>(opt) == true);
assert(*opt == Y({1, 2}));
}
{
Z z;
std::optional<Z> opt(z);
try
{
assert(static_cast<bool>(opt) == true);
assert(Z::dtor_called == false);
opt.emplace({1, 2});
}
catch (int i)
{
assert(i == 6);
assert(static_cast<bool>(opt) == false);
assert(Z::dtor_called == true);
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// optional<T>& operator=(optional<T>&& rhs)
// noexcept(is_nothrow_move_assignable<T>::value &&
// is_nothrow_move_constructible<T>::value);
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
static bool throw_now;
X() = default;
X(X&&)
{
if (throw_now)
throw 6;
}
X& operator=(X&&) noexcept
{
return *this;
}
};
struct Y {};
bool X::throw_now = false;
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
static_assert(std::is_nothrow_move_assignable<std::optional<int>>::value, "");
std::optional<int> opt;
constexpr std::optional<int> opt2;
opt = std::move(opt2);
static_assert(static_cast<bool>(opt2) == false, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
}
{
std::optional<int> opt;
constexpr std::optional<int> opt2(2);
opt = std::move(opt2);
static_assert(static_cast<bool>(opt2) == true, "");
static_assert(*opt2 == 2, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
assert(*opt == *opt2);
}
{
std::optional<int> opt(3);
constexpr std::optional<int> opt2;
opt = std::move(opt2);
static_assert(static_cast<bool>(opt2) == false, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
}
{
std::optional<int> opt(3);
constexpr std::optional<int> opt2(2);
opt = std::move(opt2);
static_assert(static_cast<bool>(opt2) == true, "");
static_assert(*opt2 == 2, "");
assert(static_cast<bool>(opt) == static_cast<bool>(opt2));
assert(*opt == *opt2);
}
{
static_assert(!std::is_nothrow_move_assignable<std::optional<X>>::value, "");
std::optional<X> opt;
std::optional<X> opt2(X{});
assert(static_cast<bool>(opt2) == true);
try
{
X::throw_now = true;
opt = std::move(opt2);
assert(false);
}
catch (int i)
{
assert(i == 6);
assert(static_cast<bool>(opt) == false);
}
}
{
static_assert(std::is_nothrow_move_assignable<std::optional<Y>>::value, "");
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// optional<T>& operator=(nullopt_t) noexcept;
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
static bool dtor_called;
~X() {dtor_called = true;}
};
bool X::dtor_called = false;
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<int> opt;
static_assert(noexcept(opt = std::nullopt) == true, "");
opt = std::nullopt;
assert(static_cast<bool>(opt) == false);
}
{
std::optional<int> opt(3);
opt = std::nullopt;
assert(static_cast<bool>(opt) == false);
}
{
std::optional<X> opt;
static_assert(noexcept(opt = std::nullopt) == true, "");
assert(X::dtor_called == false);
opt = std::nullopt;
assert(X::dtor_called == false);
assert(static_cast<bool>(opt) == false);
}
{
X x;
{
std::optional<X> opt(x);
assert(X::dtor_called == false);
opt = std::nullopt;
assert(X::dtor_called == true);
assert(static_cast<bool>(opt) == false);
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr optional(const T& v);
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
public:
X(int i) : i_(i) {}
friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
};
class Y
{
int i_;
public:
constexpr Y(int i) : i_(i) {}
friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
};
class Z
{
int i_;
public:
Z(int i) : i_(i) {}
Z(const Z&) {throw 6;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
constexpr T t(5);
constexpr std::optional<T> opt(t);
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == 5, "");
struct test_constexpr_ctor
: public std::optional<T>
{
constexpr test_constexpr_ctor(const T&) {}
};
}
{
typedef double T;
constexpr T t(3);
constexpr std::optional<T> opt(t);
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == 3, "");
struct test_constexpr_ctor
: public std::optional<T>
{
constexpr test_constexpr_ctor(const T&) {}
};
}
{
typedef X T;
const T t(3);
std::optional<T> opt(t);
assert(static_cast<bool>(opt) == true);
assert(*opt == 3);
}
{
typedef Y T;
constexpr T t(3);
constexpr std::optional<T> opt(t);
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == 3, "");
struct test_constexpr_ctor
: public std::optional<T>
{
constexpr test_constexpr_ctor(const T&) {}
};
}
{
typedef Z T;
try
{
const T t(3);
std::optional<T> opt(t);
assert(false);
}
catch (int i)
{
assert(i == 6);
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// optional(const optional<T>& rhs);
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
template <class T>
void
test(const std::optional<T>& rhs, bool is_going_to_throw = false)
{
bool rhs_engaged = static_cast<bool>(rhs);
try
{
std::optional<T> lhs = rhs;
assert(is_going_to_throw == false);
assert(static_cast<bool>(lhs) == rhs_engaged);
if (rhs_engaged)
assert(*lhs == *rhs);
}
catch (int i)
{
assert(i == 6);
}
}
class X
{
int i_;
public:
X(int i) : i_(i) {}
X(const X& x) : i_(x.i_) {}
~X() {i_ = 0;}
friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
};
class Y
{
int i_;
public:
Y(int i) : i_(i) {}
Y(const Y& x) : i_(x.i_) {}
friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
};
int count = 0;
class Z
{
int i_;
public:
Z(int i) : i_(i) {}
Z(const Z&)
{
if (++count == 2)
throw 6;
}
friend constexpr bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
std::optional<T> rhs;
test(rhs);
}
{
typedef int T;
std::optional<T> rhs(3);
test(rhs);
}
{
typedef X T;
std::optional<T> rhs;
test(rhs);
}
{
typedef X T;
std::optional<T> rhs(X(3));
test(rhs);
}
{
typedef Y T;
std::optional<T> rhs;
test(rhs);
}
{
typedef Y T;
std::optional<T> rhs(Y(3));
test(rhs);
}
{
typedef Z T;
std::optional<T> rhs;
test(rhs);
}
{
typedef Z T;
std::optional<T> rhs(Z(3));
test(rhs, true);
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr optional() noexcept;
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
template <class Opt>
void
test_constexpr()
{
static_assert(std::is_nothrow_default_constructible<Opt>::value, "");
constexpr Opt opt;
static_assert(static_cast<bool>(opt) == false, "");
struct test_constexpr_ctor
: public Opt
{
constexpr test_constexpr_ctor() {}
};
}
template <class Opt>
void
test()
{
static_assert(std::is_nothrow_default_constructible<Opt>::value, "");
Opt opt;
assert(static_cast<bool>(opt) == false);
struct test_constexpr_ctor
: public Opt
{
constexpr test_constexpr_ctor() {}
};
}
struct X
{
X();
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
test_constexpr<std::optional<int>>();
test_constexpr<std::optional<int*>>();
test<std::optional<X>>();
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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... Args>
// constexpr explicit optional(in_place_t, Args&&... args);
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
int j_ = 0;
public:
X() : i_(0) {}
X(int i) : i_(i) {}
X(int i, int j) : i_(i), j_(j) {}
~X() {}
friend bool operator==(const X& x, const X& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
class Y
{
int i_;
int j_ = 0;
public:
constexpr Y() : i_(0) {}
constexpr Y(int i) : i_(i) {}
constexpr Y(int i, int j) : i_(i), j_(j) {}
friend constexpr bool operator==(const Y& x, const Y& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
class Z
{
int i_;
public:
Z(int i) : i_(i) {throw 6;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
constexpr std::optional<int> opt(std::in_place, 5);
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == 5, "");
struct test_constexpr_ctor
: public std::optional<int>
{
constexpr test_constexpr_ctor(std::in_place_t, int i)
: std::optional<int>(std::in_place, i) {}
};
}
{
const std::optional<X> opt(std::in_place);
assert(static_cast<bool>(opt) == true);
assert(*opt == X());
}
{
const std::optional<X> opt(std::in_place, 5);
assert(static_cast<bool>(opt) == true);
assert(*opt == X(5));
}
{
const std::optional<X> opt(std::in_place, 5, 4);
assert(static_cast<bool>(opt) == true);
assert(*opt == X(5, 4));
}
{
constexpr std::optional<Y> opt(std::in_place);
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == Y(), "");
struct test_constexpr_ctor
: public std::optional<Y>
{
constexpr test_constexpr_ctor(std::in_place_t)
: std::optional<Y>(std::in_place) {}
};
}
{
constexpr std::optional<Y> opt(std::in_place, 5);
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == Y(5), "");
struct test_constexpr_ctor
: public std::optional<Y>
{
constexpr test_constexpr_ctor(std::in_place_t, int i)
: std::optional<Y>(std::in_place, i) {}
};
}
{
constexpr std::optional<Y> opt(std::in_place, 5, 4);
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == Y(5, 4), "");
struct test_constexpr_ctor
: public std::optional<Y>
{
constexpr test_constexpr_ctor(std::in_place_t, int i, int j)
: std::optional<Y>(std::in_place, i, j) {}
};
}
{
try
{
const std::optional<Z> opt(std::in_place, 1);
assert(false);
}
catch (int i)
{
assert(i == 6);
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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 U, class... Args>
// constexpr
// explicit optional(in_place_t, initializer_list<U> il, Args&&... args);
#include <optional>
#include <type_traits>
#include <vector>
#include <cassert>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
int j_ = 0;
public:
X() : i_(0) {}
X(int i) : i_(i) {}
X(int i, int j) : i_(i), j_(j) {}
~X() {}
friend bool operator==(const X& x, const X& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
class Y
{
int i_;
int j_ = 0;
public:
constexpr Y() : i_(0) {}
constexpr Y(int i) : i_(i) {}
constexpr Y(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1]) {}
friend constexpr bool operator==(const Y& x, const Y& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
class Z
{
int i_;
int j_ = 0;
public:
constexpr Z() : i_(0) {}
constexpr Z(int i) : i_(i) {}
constexpr Z(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1])
{throw 6;}
friend constexpr bool operator==(const Z& x, const Z& y)
{return x.i_ == y.i_ && x.j_ == y.j_;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
static_assert(!std::is_constructible<X, std::initializer_list<int>&>::value, "");
static_assert(!std::is_constructible<std::optional<X>, std::initializer_list<int>&>::value, "");
}
{
std::optional<std::vector<int>> opt(std::in_place, {3, 1});
assert(static_cast<bool>(opt) == true);
assert((*opt == std::vector<int>{3, 1}));
assert(opt->size() == 2);
}
{
std::optional<std::vector<int>> opt(std::in_place, {3, 1}, std::allocator<int>());
assert(static_cast<bool>(opt) == true);
assert((*opt == std::vector<int>{3, 1}));
assert(opt->size() == 2);
}
{
static_assert(std::is_constructible<std::optional<Y>, std::initializer_list<int>&>::value, "");
constexpr std::optional<Y> opt(std::in_place, {3, 1});
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == Y{3, 1}, "");
struct test_constexpr_ctor
: public std::optional<Y>
{
constexpr test_constexpr_ctor(std::in_place_t, std::initializer_list<int> i)
: std::optional<Y>(std::in_place, i) {}
};
}
{
static_assert(std::is_constructible<std::optional<Z>, std::initializer_list<int>&>::value, "");
try
{
std::optional<Z> opt(std::in_place, {3, 1});
assert(false);
}
catch (int i)
{
assert(i == 6);
}
struct test_constexpr_ctor
: public std::optional<Z>
{
constexpr test_constexpr_ctor(std::in_place_t, std::initializer_list<int> i)
: std::optional<Z>(std::in_place, i) {}
};
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// optional(optional<T>&& rhs) noexcept(is_nothrow_move_constructible<T>::value);
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
template <class T>
void
test(std::optional<T>& rhs, bool is_going_to_throw = false)
{
static_assert(std::is_nothrow_move_constructible<std::optional<T>>::value ==
std::is_nothrow_move_constructible<T>::value, "");
bool rhs_engaged = static_cast<bool>(rhs);
try
{
std::optional<T> lhs = std::move(rhs);
assert(is_going_to_throw == false);
assert(static_cast<bool>(lhs) == rhs_engaged);
}
catch (int i)
{
assert(i == 6);
}
}
class X
{
int i_;
public:
X(int i) : i_(i) {}
X(X&& x) : i_(x.i_) {x.i_ = 0;}
~X() {i_ = 0;}
friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
};
class Y
{
int i_;
public:
Y(int i) : i_(i) {}
Y(Y&& x) noexcept : i_(x.i_) {x.i_ = 0;}
friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
};
int count = 0;
class Z
{
int i_;
public:
Z(int i) : i_(i) {}
Z(Z&&)
{
if (++count == 2)
throw 6;
}
friend constexpr bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
std::optional<T> rhs;
test(rhs);
}
{
typedef int T;
std::optional<T> rhs(3);
test(rhs);
}
{
typedef X T;
std::optional<T> rhs;
test(rhs);
}
{
typedef X T;
std::optional<T> rhs(X(3));
test(rhs);
}
{
typedef Y T;
std::optional<T> rhs;
test(rhs);
}
{
typedef Y T;
std::optional<T> rhs(Y(3));
test(rhs);
}
{
typedef Z T;
std::optional<T> rhs;
test(rhs);
}
{
typedef Z T;
std::optional<T> rhs(Z(3));
test(rhs, true);
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr optional(nullopt_t) noexcept;
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
template <class Opt>
void
test_constexpr()
{
static_assert(noexcept(Opt(std::nullopt)), "");
constexpr Opt opt(std::nullopt);
static_assert(static_cast<bool>(opt) == false, "");
struct test_constexpr_ctor
: public Opt
{
constexpr test_constexpr_ctor() {}
};
}
template <class Opt>
void
test()
{
static_assert(noexcept(Opt(std::nullopt)), "");
Opt opt(std::nullopt);
assert(static_cast<bool>(opt) == false);
struct test_constexpr_ctor
: public Opt
{
constexpr test_constexpr_ctor() {}
};
}
struct X
{
X();
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
test_constexpr<std::optional<int>>();
test_constexpr<std::optional<int*>>();
test<std::optional<X>>();
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr optional(T&& v);
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
public:
X(int i) : i_(i) {}
X(X&& x) : i_(x.i_) {}
friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
};
class Y
{
int i_;
public:
constexpr Y(int i) : i_(i) {}
constexpr Y(Y&& x) : i_(x.i_) {}
friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
};
class Z
{
int i_;
public:
Z(int i) : i_(i) {}
Z(Z&&) {throw 6;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
constexpr std::optional<T> opt(T(5));
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == 5, "");
struct test_constexpr_ctor
: public std::optional<T>
{
constexpr test_constexpr_ctor(T&&) {}
};
}
{
typedef double T;
constexpr std::optional<T> opt(T(3));
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == 3, "");
struct test_constexpr_ctor
: public std::optional<T>
{
constexpr test_constexpr_ctor(T&&) {}
};
}
{
typedef X T;
std::optional<T> opt(T(3));
assert(static_cast<bool>(opt) == true);
assert(*opt == 3);
}
{
typedef Y T;
constexpr std::optional<T> opt(T(3));
static_assert(static_cast<bool>(opt) == true, "");
static_assert(*opt == 3, "");
struct test_constexpr_ctor
: public std::optional<T>
{
constexpr test_constexpr_ctor(T&&) {}
};
}
{
typedef Z T;
try
{
std::optional<T> opt(T(3));
assert(false);
}
catch (int i)
{
assert(i == 6);
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// ~optional();
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
class X
{
public:
static bool dtor_called;
X() = default;
~X() {dtor_called = true;}
};
bool X::dtor_called = false;
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
static_assert(std::is_trivially_destructible<T>::value, "");
static_assert(std::is_trivially_destructible<std::optional<T>>::value, "");
}
{
typedef double T;
static_assert(std::is_trivially_destructible<T>::value, "");
static_assert(std::is_trivially_destructible<std::optional<T>>::value, "");
}
{
typedef X T;
static_assert(!std::is_trivially_destructible<T>::value, "");
static_assert(!std::is_trivially_destructible<std::optional<T>>::value, "");
{
X x;
std::optional<X> opt{x};
assert(X::dtor_called == false);
}
assert(X::dtor_called == true);
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr explicit optional<T>::operator bool() const noexcept;
#include <optional>
#include <type_traits>
#include <cassert>
int main()
{
#if _LIBCPP_STD_VER > 11
{
constexpr std::optional<int> opt;
static_assert(!opt, "");
}
{
constexpr std::optional<int> opt(0);
static_assert(opt, "");
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// T& optional<T>::operator*();
#ifdef _LIBCPP_DEBUG
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#endif
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
constexpr int test() const {return 3;}
int test() {return 4;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<X> opt(X{});
assert((*opt).test() == 4);
}
#ifdef _LIBCPP_DEBUG
{
std::optional<X> opt;
assert((*opt).test() == 3);
assert(false);
}
#endif // _LIBCPP_DEBUG
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr const T& optional<T>::operator*() const;
#ifdef _LIBCPP_DEBUG
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#endif
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
constexpr int test() const {return 3;}
};
struct Y
{
int test() const {return 2;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
constexpr std::optional<X> opt(X{});
static_assert((*opt).test() == 3, "");
}
{
constexpr std::optional<Y> opt(Y{});
assert((*opt).test() == 2);
}
#ifdef _LIBCPP_DEBUG
{
const std::optional<X> opt;
assert((*opt).test() == 3);
assert(false);
}
#endif // _LIBCPP_DEBUG
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// T* optional<T>::operator->();
#ifdef _LIBCPP_DEBUG
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#endif
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
int test() const {return 2;}
int test() {return 3;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<X> opt(X{});
assert(opt->test() == 3);
}
#ifdef _LIBCPP_DEBUG
{
std::optional<X> opt;
assert(opt->test() == 3);
assert(false);
}
#endif // _LIBCPP_DEBUG
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr const T* optional<T>::operator->() const;
#ifdef _LIBCPP_DEBUG
#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
#endif
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
constexpr int test() const {return 3;}
};
struct Y
{
int test() const {return 2;}
};
struct Z
{
const Z* operator&() const {return this;}
constexpr int test() const {return 1;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
constexpr std::optional<X> opt(X{});
static_assert(opt->test() == 3, "");
}
{
constexpr std::optional<Y> opt(Y{});
assert(opt->test() == 2);
}
{
constexpr std::optional<Z> opt(Z{});
assert(opt->test() == 1);
}
#ifdef _LIBCPP_DEBUG
{
const std::optional<X> opt;
assert(opt->test() == 3);
assert(false);
}
#endif // _LIBCPP_DEBUG
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// T& optional<T>::value();
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
X() = default;
X(const X&) = delete;
constexpr int test() const {return 3;}
int test() {return 4;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<X> opt;
opt.emplace();
assert(opt.value().test() == 4);
}
{
std::optional<X> opt;
try
{
opt.value();
assert(false);
}
catch (const std::bad_optional_access&)
{
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr const T& optional<T>::value() const;
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
constexpr int test() const {return 3;}
int test() {return 4;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
constexpr std::optional<X> opt;
static_assert(opt.value().test() == 3, "");
}
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// constexpr const T& optional<T>::value() const;
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct X
{
X() = default;
X(const X&) = delete;
constexpr int test() const {return 3;}
int test() {return 4;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
constexpr std::optional<X> opt(std::in_place);
static_assert(opt.value().test() == 3, "");
}
{
const std::optional<X> opt(std::in_place);
assert(opt.value().test() == 3);
}
{
const std::optional<X> opt;
try
{
opt.value();
assert(false);
}
catch (const std::bad_optional_access&)
{
}
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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 U> T optional<T>::value_or(U&& v) &&;
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct Y
{
int i_;
Y(int i) : i_(i) {}
};
struct X
{
int i_;
X(int i) : i_(i) {}
X(X&& x) : i_(x.i_) {x.i_ = 0;}
X(const Y& y) : i_(y.i_) {}
X(Y&& y) : i_(y.i_+1) {}
friend constexpr bool operator==(const X& x, const X& y)
{return x.i_ == y.i_;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<X> opt(std::in_place, 2);
Y y(3);
assert(std::move(opt).value_or(y) == 2);
assert(*opt == 0);
}
{
std::optional<X> opt(std::in_place, 2);
assert(std::move(opt).value_or(Y(3)) == 2);
assert(*opt == 0);
}
{
std::optional<X> opt;
Y y(3);
assert(std::move(opt).value_or(y) == 3);
assert(!opt);
}
{
std::optional<X> opt;
assert(std::move(opt).value_or(Y(3)) == 4);
assert(!opt);
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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 U> constexpr T optional<T>::value_or(U&& v) const&;
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
struct Y
{
int i_;
constexpr Y(int i) : i_(i) {}
};
struct X
{
int i_;
constexpr X(int i) : i_(i) {}
constexpr X(const Y& y) : i_(y.i_) {}
constexpr X(Y&& y) : i_(y.i_+1) {}
friend constexpr bool operator==(const X& x, const X& y)
{return x.i_ == y.i_;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
constexpr std::optional<X> opt(2);
constexpr Y y(3);
static_assert(opt.value_or(y) == 2, "");
}
{
constexpr std::optional<X> opt(2);
static_assert(opt.value_or(Y(3)) == 2, "");
}
{
constexpr std::optional<X> opt;
constexpr Y y(3);
static_assert(opt.value_or(y) == 3, "");
}
{
constexpr std::optional<X> opt;
static_assert(opt.value_or(Y(3)) == 4, "");
}
{
const std::optional<X> opt(2);
const Y y(3);
assert(opt.value_or(y) == 2);
}
{
const std::optional<X> opt(2);
assert(opt.value_or(Y(3)) == 2);
}
{
const std::optional<X> opt;
const Y y(3);
assert(opt.value_or(y) == 3);
}
{
const std::optional<X> opt;
assert(opt.value_or(Y(3)) == 4);
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// void swap(optional&)
// noexcept(is_nothrow_move_constructible<T>::value &&
// noexcept(swap(declval<T&>(), declval<T&>())));
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
public:
static unsigned dtor_called;
X(int i) : i_(i) {}
X(X&& x) = default;
X& operator=(X&&) = default;
~X() {++dtor_called;}
friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
};
unsigned X::dtor_called = 0;
class Y
{
int i_;
public:
static unsigned dtor_called;
Y(int i) : i_(i) {}
Y(Y&&) = default;
~Y() {++dtor_called;}
friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
friend void swap(Y& x, Y& y) {std::swap(x.i_, y.i_);}
};
unsigned Y::dtor_called = 0;
class Z
{
int i_;
public:
Z(int i) : i_(i) {}
Z(Z&&) {throw 7;}
friend constexpr bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
friend void swap(Z& x, Z& y) {throw 6;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<int> opt1;
std::optional<int> opt2;
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
opt1.swap(opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<int> opt1(1);
std::optional<int> opt2;
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
opt1.swap(opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<int> opt1;
std::optional<int> opt2(2);
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
opt1.swap(opt2);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<int> opt1(1);
std::optional<int> opt2(2);
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
opt1.swap(opt2);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<X> opt1;
std::optional<X> opt2;
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
opt1.swap(opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
assert(X::dtor_called == 0);
}
{
std::optional<X> opt1(1);
std::optional<X> opt2;
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
X::dtor_called = 0;
opt1.swap(opt2);
assert(X::dtor_called == 1);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<X> opt1;
std::optional<X> opt2(2);
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
X::dtor_called = 0;
opt1.swap(opt2);
assert(X::dtor_called == 1);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<X> opt1(1);
std::optional<X> opt2(2);
static_assert(noexcept(opt1.swap(opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
X::dtor_called = 0;
opt1.swap(opt2);
assert(X::dtor_called == 1); // from inside std::swap
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<Y> opt1;
std::optional<Y> opt2;
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
opt1.swap(opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
assert(Y::dtor_called == 0);
}
{
std::optional<Y> opt1(1);
std::optional<Y> opt2;
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
Y::dtor_called = 0;
opt1.swap(opt2);
assert(Y::dtor_called == 1);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<Y> opt1;
std::optional<Y> opt2(2);
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
Y::dtor_called = 0;
opt1.swap(opt2);
assert(Y::dtor_called == 1);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<Y> opt1(1);
std::optional<Y> opt2(2);
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
Y::dtor_called = 0;
opt1.swap(opt2);
assert(Y::dtor_called == 0);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<Z> opt1;
std::optional<Z> opt2;
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
opt1.swap(opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<Z> opt1;
opt1.emplace(1);
std::optional<Z> opt2;
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
try
{
opt1.swap(opt2);
assert(false);
}
catch (int i)
{
assert(i == 7);
}
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<Z> opt1;
std::optional<Z> opt2;
opt2.emplace(2);
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
try
{
opt1.swap(opt2);
assert(false);
}
catch (int i)
{
assert(i == 7);
}
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
}
{
std::optional<Z> opt1;
opt1.emplace(1);
std::optional<Z> opt2;
opt2.emplace(2);
static_assert(noexcept(opt1.swap(opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
try
{
opt1.swap(opt2);
assert(false);
}
catch (int i)
{
assert(i == 6);
}
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
}
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// T shall be an object type and shall satisfy the requirements of Destructible
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<const void> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// T shall be an object type and shall satisfy the requirements of Destructible
#include <optional>
#if _LIBCPP_STD_VER > 11
struct X
{
private:
~X() {}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<X> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,32 @@
//===----------------------------------------------------------------------===//
//
// 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>
// T shall be an object type and shall satisfy the requirements of Destructible
#include <optional>
#if _LIBCPP_STD_VER > 11
struct X
{
~X() noexcept(false) {}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<X> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,23 @@
//===----------------------------------------------------------------------===//
//
// 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>
// T shall be an object type and shall satisfy the requirements of Destructible
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<void> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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>
// class optional
// {
// public:
// typedef T value_type;
// ...
#include <optional>
#include <type_traits>
#if _LIBCPP_STD_VER > 11
template <class Opt, class T>
void
test()
{
static_assert(std::is_same<typename Opt::value_type, T>::value, "");
}
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
test<std::optional<int>, int>();
test<std::optional<const int>, const int>();
test<std::optional<double>, double>();
test<std::optional<const double>, const double>();
#endif // _LIBCPP_STD_VER > 11
}

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//===----------------------------------------------------------------------===//
//
// 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, const optional<T>& y);
#include <optional>
#include <type_traits>
#include <cassert>
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef int T;
typedef std::optional<T> O;
constexpr O o1; // disengaged
constexpr O o2; // disengaged
constexpr O o3{1}; // engaged
constexpr O o4{2}; // engaged
constexpr O o5{1}; // engaged
static_assert ( o1 == o1 , "" );
static_assert ( o1 == o2 , "" );
static_assert ( !(o1 == o3), "" );
static_assert ( !(o1 == o4), "" );
static_assert ( !(o1 == o5), "" );
static_assert ( o2 == o1 , "" );
static_assert ( o2 == o2 , "" );
static_assert ( !(o2 == o3), "" );
static_assert ( !(o2 == o4), "" );
static_assert ( !(o2 == o5), "" );
static_assert ( !(o3 == o1), "" );
static_assert ( !(o3 == o2), "" );
static_assert ( o3 == o3 , "" );
static_assert ( !(o3 == o4), "" );
static_assert ( o3 == o5 , "" );
static_assert ( !(o4 == o1), "" );
static_assert ( !(o4 == o2), "" );
static_assert ( !(o4 == o3), "" );
static_assert ( o4 == o4 , "" );
static_assert ( !(o4 == o5), "" );
static_assert ( !(o5 == o1), "" );
static_assert ( !(o5 == o2), "" );
static_assert ( o5 == o3 , "" );
static_assert ( !(o5 == o4), "" );
static_assert ( o5 == o5 , "" );
}
#endif
}

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@ -0,0 +1,86 @@
//===----------------------------------------------------------------------===//
//
// 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, const optional<T>& y);
#include <optional>
#if _LIBCPP_STD_VER > 11
struct X
{
int i_;
constexpr X(int i) : i_(i) {}
};
namespace std
{
template <>
struct less<X>
{
constexpr
bool
operator()(const X& x, const X& y) const
{
return x.i_ < y.i_;
}
};
}
#endif
int main()
{
#if _LIBCPP_STD_VER > 11
{
typedef std::optional<X> O;
constexpr O o1; // disengaged
constexpr O o2; // disengaged
constexpr O o3{1}; // engaged
constexpr O o4{2}; // engaged
constexpr O o5{1}; // engaged
static_assert ( !(o1 < o1), "" );
static_assert ( !(o1 < o2), "" );
static_assert ( o1 < o3 , "" );
static_assert ( o1 < o4 , "" );
static_assert ( o1 < o5 , "" );
static_assert ( !(o2 < o1), "" );
static_assert ( !(o2 < o2), "" );
static_assert ( o2 < o3 , "" );
static_assert ( o2 < o4 , "" );
static_assert ( o2 < o5 , "" );
static_assert ( !(o3 < o1), "" );
static_assert ( !(o3 < o2), "" );
static_assert ( !(o3 < o3), "" );
static_assert ( o3 < o4 , "" );
static_assert ( !(o3 < o5), "" );
static_assert ( !(o4 < o1), "" );
static_assert ( !(o4 < o2), "" );
static_assert ( !(o4 < o3), "" );
static_assert ( !(o4 < o4), "" );
static_assert ( !(o4 < o5), "" );
static_assert ( !(o5 < o1), "" );
static_assert ( !(o5 < o2), "" );
static_assert ( !(o5 < o3), "" );
static_assert ( o5 < o4 , "" );
static_assert ( !(o5 < o5), "" );
}
#endif
}

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@ -0,0 +1,51 @@
//===----------------------------------------------------------------------===//
//
// 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
// optional<typename decay<T>::type>
// make_optional(T&& v);
#include <optional>
#include <string>
#include <memory>
#include <cassert>
#if _LIBCPP_STD_VER > 11
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<int> opt = std::make_optional(2);
assert(*opt == 2);
}
{
std::string s("123");
std::optional<std::string> opt = std::make_optional(s);
assert(*opt == s);
}
{
std::string s("123");
std::optional<std::string> opt = std::make_optional(std::move(s));
assert(*opt == "123");
assert(s.empty());
}
{
std::unique_ptr<int> s(new int(3));
std::optional<std::unique_ptr<int>> opt = std::make_optional(std::move(s));
assert(**opt == 3);
assert(s == nullptr);
}
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,303 @@
//===----------------------------------------------------------------------===//
//
// 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> void swap(optional<T>& x, optional<T>& y)
// noexcept(noexcept(x.swap(y)));
#include <optional>
#include <type_traits>
#include <cassert>
#if _LIBCPP_STD_VER > 11
class X
{
int i_;
public:
static unsigned dtor_called;
X(int i) : i_(i) {}
X(X&& x) = default;
X& operator=(X&&) = default;
~X() {++dtor_called;}
friend bool operator==(const X& x, const X& y) {return x.i_ == y.i_;}
};
unsigned X::dtor_called = 0;
class Y
{
int i_;
public:
static unsigned dtor_called;
Y(int i) : i_(i) {}
Y(Y&&) = default;
~Y() {++dtor_called;}
friend constexpr bool operator==(const Y& x, const Y& y) {return x.i_ == y.i_;}
friend void swap(Y& x, Y& y) {std::swap(x.i_, y.i_);}
};
unsigned Y::dtor_called = 0;
class Z
{
int i_;
public:
Z(int i) : i_(i) {}
Z(Z&&) {throw 7;}
friend constexpr bool operator==(const Z& x, const Z& y) {return x.i_ == y.i_;}
friend void swap(Z& x, Z& y) {throw 6;}
};
#endif // _LIBCPP_STD_VER > 11
int main()
{
#if _LIBCPP_STD_VER > 11
{
std::optional<int> opt1;
std::optional<int> opt2;
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
swap(opt1, opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<int> opt1(1);
std::optional<int> opt2;
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
swap(opt1, opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<int> opt1;
std::optional<int> opt2(2);
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
swap(opt1, opt2);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<int> opt1(1);
std::optional<int> opt2(2);
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
swap(opt1, opt2);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<X> opt1;
std::optional<X> opt2;
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
swap(opt1, opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
assert(X::dtor_called == 0);
}
{
std::optional<X> opt1(1);
std::optional<X> opt2;
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
X::dtor_called = 0;
swap(opt1, opt2);
assert(X::dtor_called == 1);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<X> opt1;
std::optional<X> opt2(2);
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
X::dtor_called = 0;
swap(opt1, opt2);
assert(X::dtor_called == 1);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<X> opt1(1);
std::optional<X> opt2(2);
static_assert(noexcept(swap(opt1, opt2)) == true, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
X::dtor_called = 0;
swap(opt1, opt2);
assert(X::dtor_called == 1); // from inside std::swap
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<Y> opt1;
std::optional<Y> opt2;
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
swap(opt1, opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
assert(Y::dtor_called == 0);
}
{
std::optional<Y> opt1(1);
std::optional<Y> opt2;
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
Y::dtor_called = 0;
swap(opt1, opt2);
assert(Y::dtor_called == 1);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<Y> opt1;
std::optional<Y> opt2(2);
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
Y::dtor_called = 0;
swap(opt1, opt2);
assert(Y::dtor_called == 1);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<Y> opt1(1);
std::optional<Y> opt2(2);
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
Y::dtor_called = 0;
swap(opt1, opt2);
assert(Y::dtor_called == 0);
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 2);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 1);
}
{
std::optional<Z> opt1;
std::optional<Z> opt2;
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
swap(opt1, opt2);
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<Z> opt1;
opt1.emplace(1);
std::optional<Z> opt2;
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
try
{
swap(opt1, opt2);
assert(false);
}
catch (int i)
{
assert(i == 7);
}
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == false);
}
{
std::optional<Z> opt1;
std::optional<Z> opt2;
opt2.emplace(2);
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
try
{
swap(opt1, opt2);
assert(false);
}
catch (int i)
{
assert(i == 7);
}
assert(static_cast<bool>(opt1) == false);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
}
{
std::optional<Z> opt1;
opt1.emplace(1);
std::optional<Z> opt2;
opt2.emplace(2);
static_assert(noexcept(swap(opt1, opt2)) == false, "");
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
try
{
swap(opt1, opt2);
assert(false);
}
catch (int i)
{
assert(i == 6);
}
assert(static_cast<bool>(opt1) == true);
assert(*opt1 == 1);
assert(static_cast<bool>(opt2) == true);
assert(*opt2 == 2);
}
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,24 @@
//===----------------------------------------------------------------------===//
//
// 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>
// A program that necessitates the instantiation of template optional for
// (possibly cv-qualified) in_place_t is ill-formed.
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<const std::inplace_t> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,24 @@
//===----------------------------------------------------------------------===//
//
// 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>
// A program that necessitates the instantiation of template optional for a
// reference type is ill-formed.
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<const int&> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,24 @@
//===----------------------------------------------------------------------===//
//
// 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>
// A program that necessitates the instantiation of template optional for
// (possibly cv-qualified) null_opt_t is ill-formed.
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<const std::nullopt_t> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,24 @@
//===----------------------------------------------------------------------===//
//
// 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>
// A program that necessitates the instantiation of template optional for
// (possibly cv-qualified) in_place_t is ill-formed.
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<std::inplace_t> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,21 @@
//===----------------------------------------------------------------------===//
//
// 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>
// #include <initializer_list>
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::initializer_list<int> list;
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,24 @@
//===----------------------------------------------------------------------===//
//
// 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>
// A program that necessitates the instantiation of template optional for a
// reference type is ill-formed.
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<int&> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,24 @@
//===----------------------------------------------------------------------===//
//
// 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>
// A program that necessitates the instantiation of template optional for
// (possibly cv-qualified) null_opt_t is ill-formed.
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<std::nullopt_t> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,24 @@
//===----------------------------------------------------------------------===//
//
// 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>
// A program that necessitates the instantiation of template optional for a
// reference type is ill-formed.
#include <optional>
int main()
{
#if _LIBCPP_STD_VER > 11
std::optional<int&&> opt;
#else
#error
#endif // _LIBCPP_STD_VER > 11
}

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@ -0,0 +1,20 @@
//===----------------------------------------------------------------------===//
//
// 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>
#include <optional>
#ifndef _LIBCPP_VERSION
#error _LIBCPP_VERSION not defined
#endif
int main()
{
}

View File

@ -87,7 +87,7 @@
<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3642.pdf">3642</a></td><td>LWG</td><td>User-defined Literals</td><td>Bristol</td><td>Complete</td><td>3.4</td></tr>
<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3655.pdf">3655</a></td><td>LWG</td><td>TransformationTraits Redux (excluding part 4)</td><td>Bristol</td><td>Complete</td><td>3.4</td></tr>
<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3657.htm">3657</a></td><td>LWG</td><td>Adding heterogeneous comparison lookup to associative containers</td><td>Bristol</td><td>Complete</td><td>3.4</td></tr>
<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3672.html">3672</a></td><td>LWG</td><td>A proposal to add a utility class to represent optional objects</td><td>Bristol</td><td></td><td></td></tr>
<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3672.html">3672</a></td><td>LWG</td><td>A proposal to add a utility class to represent optional objects</td><td>Bristol</td><td></td><td>Complete</td></tr>
<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3669.pdf">3669</a></td><td>LWG</td><td>Fixing constexpr member functions without const</td><td>Bristol</td><td>Complete</td><td>3.4</td></tr>
<tr><td><a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3662.html">3662</a></td><td>LWG</td><td>C++ Dynamic Arrays (dynarray)</td><td>Bristol</td><td></td><td></td></tr>