hash for arithmetic, pointer and standard library types should not throwSection: 22.10.19 [unord.hash] Status: Resolved Submitter: United States Opened: 2016-11-09 Last modified: 2020-09-06
Priority: 3
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Discussion:
Addresses US 140
Specializations ofstd::hash for arithmetic, pointer,
and standard library types should not be allowed to throw. The
constructors, assignment operators, and function call operator
should all be marked as noexcept.
It might be reasonable to consider making this a
binding requirement on user specializations of the
hash template as well (in p1) but that may be big a
change to make at this stage.
[Issues Telecon 16-Dec-2016]
Priority 2, Nico to provide wording.
[2017-02-07, Nico comments]
Concrete wording is provided in P0599.
[2017-03-12, post-Kona]
Resolved by P0599R0.
Proposed resolution: