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[bug #29575] SRFI-19 conversion issue
From: |
anonymous |
Subject: |
[bug #29575] SRFI-19 conversion issue |
Date: |
Fri, 16 Apr 2010 09:08:21 +0000 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.3) Gecko/20100401 SUSE/3.6.3-1.2 Firefox/3.6.3 |
URL:
<http://savannah.gnu.org/bugs/?29575>
Summary: SRFI-19 conversion issue
Project: Guile
Submitted by: None
Submitted on: Fri 16 Apr 2010 09:08:21 AM UTC
Category: None
Severity: 3 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
_______________________________________________________
Details:
Using SRFI-19, converting from string->date->time-utc, adding a duration, and
converting back time->utc->date->string returns an incorrect result, but
apparently on only specific dates.
Code to reproduce:
(use-modules (srfi srfi-19))
(define one-day-duration
(time-difference (date->time-utc (string->date "20100102" "~Y~m~d"))
(date->time-utc (string->date "20100101" "~Y~m~d"))))
(define +day
(lambda (yyyymmdd)
"Add one day to date string"
(date->string
(time-utc->date
(add-duration (date->time-utc (string->date yyyymmdd "~Y~m~d"))
one-day-duration))
"~Y~m~d")))
(+day "20091102")
=> "20091103" Correct.
(+day "20091101")
=> "20091101" ERROR!
(+day "20081101")
=> "20081102" Correct.
(+day "20081102")
=> "20081102" ERROR!
(+day "20071103")
=> "20071104" Correct.
(+day "20071104")
=> "20071104" ERROR!
And so forth.
>From what I have seen, only the beginning of November seems to be the issue
-- I have used these functions to get every date for 2007, 2008 and 2009, and
those were the only issues I''ve seen so far.
HTH.
_______________________________________________________
Reply to this item at:
<http://savannah.gnu.org/bugs/?29575>
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- [bug #29575] SRFI-19 conversion issue,
anonymous <=