DE344 27.11.01 p1 Properly reference specification of IANA time zone database LWG 3319

[wg21bot]

This paragraph says
"27.11 describes an interface for accessing the IANA Time Zone database described in RFC 6557, ..."

However, RFC 6557 does not describe the database itself; it only describes
the maintenance procedures for that database, as its title implies
(quoted in clause 2).

Proposed change:
Add a reference to a specification of the database itself, or
excise all references to the IANA time zone database.

[HowardHinnant]

We can not entirely remove the reference to IANA because we need portable time_zone names (e.g. "America/New_York") and definitions.

Proposed wording:

Insert a new reference into section 2 Normative references [intro.refs]:

(1.11) IANA Time Zone Database. Available at https://www.iana.org/time-zones

Modify 27.11.1 In general [time.zone.general]/p1:

27.11 describes an interface for accessing the IANA Time Zone dDatabase described in RFC 6557, that interoperates with sys_time and local_time. This interface provides time zone support to both the civil calendar types (27.8) and to user-defined calendars. Implementations may support a superset of the IANA Time Zone Database.

[jwakely]

Reviewed by LWG small group on Monday morning.

[Dani-Hub]

The associated issue is LWG 3319

[JeffGarland]

Issue moved to ready as of 2019-11-07