Daniel Kruegler 7f359d19d0 Implement LWG 2686, std::hash<error_condition>, for C++17 ...

2017-03-23  Daniel Kruegler  <daniel.kruegler@gmail.com>

	Implement LWG 2686, Why is std::hash specialized for error_code,
	but not error_condition?
	* include/std/system_error (hash<error_condition>): Define for C++17.
	* testsuite/20_util/hash/operators/size_t.cc (hash<error_condition>):
	Instantiate test for error_condition.
	* testsuite/20_util/hash/requirements/explicit_instantiation.cc
	(hash<error_condition>): Instantiate hash<error_condition>.

From-SVN: r246424

2017-03-23 19:40:16 +00:00

..

add_const

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add_cv

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add_lvalue_reference

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add_pointer

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addressof

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align

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aligned_storage

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aligned_union

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alignment_of

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allocator

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allocator_traits

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any

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as_const

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auto_ptr

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bad_function_call

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bind

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bool_constant

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common_type/requirements

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conditional/requirements

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decay/requirements

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declval/requirements

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default_delete

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duration

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duration_cast

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enable_if/requirements

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enable_shared_from_this

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exchange

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extent

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forward

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function

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function_objects

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has_unique_object_representations

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has_virtual_destructor

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hash

Implement LWG 2686, std::hash<error_condition>, for C++17

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headers

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in_place

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integer_sequence

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integral_constant

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is_abstract

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is_arithmetic

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is_assignable

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is_base_of

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is_compound

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is_constructible

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is_copy_assignable

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is_copy_constructible

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is_default_constructible

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is_destructible

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is_empty

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is_enum

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is_final

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is_floating_point

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is_fundamental

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is_implicitly_default_constructible

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is_integral

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is_invocable

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is_literal_type

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is_nothrow_destructible

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is_nothrow_invocable

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is_nothrow_move_assignable

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is_pointer

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is_rvalue_reference

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is_same

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is_scalar

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is_signed

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is_standard_layout

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is_swappable

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is_swappable_with

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is_trivial

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is_trivially_assignable

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is_trivially_constructible

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is_unsigned

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is_void

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logical_traits

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make_unsigned/requirements

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move

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move_if_noexcept

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optional

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owner_less

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pair

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pointer_safety

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pointer_traits

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rank

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ratio

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raw_storage_iterator

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reference_wrapper

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remove_all_extents

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remove_const

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remove_cv

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remove_extent

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remove_pointer

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remove_reference

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remove_volatile

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result_of

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scoped_allocator

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shared_ptr

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specialized_algorithms

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steady_clock

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system_clock

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time_point

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time_point_cast

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tuple

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typeindex

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underlying_type/requirements

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unique_ptr

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uses_allocator

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variant

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void_t

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weak_ptr

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rel_ops.cc

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temporary_buffer.cc

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variable_templates_for_traits.cc

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