[issue15165] test_email: failure on Windows

[STINNER Victor]

STINNER Victor added the comment:

This issue is not related to the email module, but it is a Windows limitation: 
datetime.datetime(1970, 1, 1).timestamp() raises a same OverflowError.

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[issue15165] test_email: failure on Windows

[Roundup Robot]

Roundup Robot added the comment:

New changeset 367e376e5ba2 by Victor Stinner in branch '3.3':
Close #15165: Fix test_email on Windows 64 bits
http://hg.python.org/cpython/rev/367e376e5ba2

New changeset 651e8613e579 by Victor Stinner in branch 'default':
(Merge 3.3) Close #15165: Fix test_email on Windows 64 bits
http://hg.python.org/cpython/rev/651e8613e579

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nosy: +python-dev
resolution:  -> fixed
stage:  -> committed/rejected
status: open -> closed

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[issue15165] test_email: failure on Windows

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

Is this something that has to be fixed during the freeze?  The fix is trivial: 
s/1970/1990/g, but I planned to revisit TZ-dependent tests during the beta 
period.  I think we don't use run_with_tz() enough.  It would also be great to 
make it work on windows.

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assignee:  -> belopolsky

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[issue15165] test_email: failure on Windows

[Stefan Krah]

Stefan Krah  added the comment:

My timezone is CET, so that fits your explanation. Indeed, the failure
also occurs on Windows 32-bit.

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title: test_email: failure on Windows 64-bit -> test_email: failure on Windows

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[issue15165] test_email: failure on Windows 64-bit

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

I am surprised that we don't see the same failure on 32-bit windows buildbot.  
Windows mktime does not support negative time_t in either 32 or 64 bit version:

http://msdn.microsoft.com/en-us/library/d1y53h2a(v=vs.110).aspx

We are probably just lucky and no Windows buildbot uses a TZ set ahead of UTC.  
 Stefan, what is your timezone?

What is happening here is that mktime() is called for 1970-01-01 00:00 which 
results in positive timestamp for the timezones west of Greenwich and negative 
timestamp east of Greenwich.  For example, using GNU date:

$ TZ=Europe/Paris date -d "1970-01-01 00:00" +%s
-3600

$ TZ=America/New_York date -d "1970-01-01 00:00" +%s
18000

I am adding Victor as an expert on pushing the limits of date/time functions.

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[issue15165] test_email: failure on Windows 64-bit

[Alexander Belopolsky]

Alexander Belopolsky  added the comment:

I don't have a Win 64 setup, but I think replacing 1970 with say 1990 in the 
tests should fix the problem.

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[issue15165] test_email: failure on Windows 64-bit

[R. David Murray]

R. David Murray  added the comment:

I haven't touched localtime since pycon, so I presume this hasn't been detected 
before due to our lack of a windows 64bit buildbot.

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components: +email
nosy: +barry, belopolsky
priority: normal -> high

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[issue15165] test_email: failure on Windows 64-bit

[Antoine Pitrou]

Antoine Pitrou  added the comment:

Same here with VS 2008.

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[issue15165] test_email: failure on Windows 64-bit

[Stefan Krah]

New submission from Stefan Krah :

I'm getting this failure in test_email (Windows 64-bit build):

==  
 
ERROR: test_localtime_epoch_notz_daylight_false (test_utils.LocaltimeTests) 
 
--  
 
Traceback (most recent call last):  
 
  File "C:\Users\stefan\pydev\cpython\lib\test\test_email\test_utils.py", line 
112, in test_localtime_epoch_notz_dayl
ight_false  
 
t1 = utils.localtime(t0)
 
  File "C:\Users\stefan\pydev\cpython\lib\email\utils.py", line 397, in 
localtime
seconds = time.mktime(tm)   
 
OverflowError: mktime argument out of range 
 

 
==  
 
ERROR: test_localtime_epoch_notz_daylight_true (test_utils.LocaltimeTests)  
 
--  
 
Traceback (most recent call last):  
 
  File "C:\Users\stefan\pydev\cpython\lib\test\test_email\test_utils.py", line 
105, in test_localtime_epoch_notz_dayl
ight_true   
 
t1 = utils.localtime(t0)
 
  File "C:\Users\stefan\pydev\cpython\lib\email\utils.py", line 397, in 
localtime
seconds = time.mktime(tm)   
 
OverflowError: mktime argument out of range

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components: Tests
keywords: buildbot
messages: 163827
nosy: r.david.murray, skrah
priority: normal
severity: normal
status: open
title: test_email: failure on Windows 64-bit
type: behavior
versions: Python 3.3

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