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Re: First draft of the Y2038 design document

From: Paul Eggert <eggert at cs dot ucla dot edu>
To: Rich Felker <dalias at libc dot org>
Cc: Albert ARIBAUD <albert dot aribaud at 3adev dot fr>, GNU C Library <libc-alpha at sourceware dot org>
Date: Tue, 27 Oct 2015 01:57:18 -0700
Subject: Re: First draft of the Y2038 design document
Authentication-results: sourceware.org; auth=none
References: <20151026001252 dot 590e09c1 dot albert dot aribaud at 3adev dot fr> <562EEE05 dot 1080304 at cs dot ucla dot edu> <20151027034324 dot GW8645 at brightrain dot aerifal dot cx>

Rich Felker wrote:

The relationship between time_t and broken down struct tm is strictly
specified and does not admit leap seconds.

Although that's true for applications that specify POSIX TZ values, glibcsupports leap seconds as an extension. Once you set the TZ environment variableto a value like "right/America/Los_Angeles" that is outside what POSIX allows,the implementation can do what it likes here.

Follow-Ups:
- Re: First draft of the Y2038 design document
  - From: Rich Felker

References:
- First draft of the Y2038 design document
  - From: Albert ARIBAUD
- Re: First draft of the Y2038 design document
  - From: Paul Eggert
- Re: First draft of the Y2038 design document
  - From: Rich Felker

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