From: Raymond Hettinger <python@rcn.com>
Date: Thu, 13 Feb 2003 22:58:02 +0000 (+0000)
Subject: SF 685011: calendar module overflow handling
X-Git-Tag: v2.3c1~1853
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=61436489f9eb6a4c4072b05fa9b5d6dc0ef20f2b;p=python

SF 685011: calendar module overflow handling

Restored a Py2.2 behavior to not range check the day of the month.
A user application was this exploiting undocumented, accidental "feature".
---

diff --git a/Lib/calendar.py b/Lib/calendar.py
index 365ca26344..fb56826f6f 100644
--- a/Lib/calendar.py
+++ b/Lib/calendar.py
@@ -213,7 +213,7 @@ _EPOCH_ORD = datetime.date(EPOCH, 1, 1).toordinal()
 def timegm(tuple):
     """Unrelated but handy function to calculate Unix timestamp from GMT."""
     year, month, day, hour, minute, second = tuple[:6]
-    days = datetime.date(year, month, day).toordinal() - _EPOCH_ORD
+    days = datetime.date(year, month, 1).toordinal() - _EPOCH_ORD + day - 1
     hours = days*24 + hour
     minutes = hours*60 + minute
     seconds = minutes*60 + second