[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment: I can confirm that using "de-DE" does indeed avoid the crash. -- ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36792] zipfile.writestr causes a Python crash on Windows if the locale is set
New submission from Charlie Clark :
Based on a bug report
(https://bitbucket.org/openpyxl/openpyxl/issues/1266/locale) from a user of the
openpyxl library I've identified a bug in the zipfile module that causes the
Python process to crash on Windows. Currently tested with Python 3.7.3 (32-bit
on Windows 10).
Sample code
import faulthandler
import locale
from zipfile import ZipFile
faulthandler.enable()
locale.setlocale(locale.LC_ALL, 'de_DE')
out = open("out.zip", "wb")
archive = ZipFile(out, "w")
archive.writestr("properties.xml", b"")
faulthandler fingers line 1757 as the culprit but running this line locally
does not cause the crash. The issue seems to be limited to Windows.
--
components: Interpreter Core, Windows
messages: 341380
nosy: CharlieClark, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
status: open
title: zipfile.writestr causes a Python crash on Windows if the locale is set
versions: Python 3.7
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[issue36792] zipfile.writestr causes a Python crash on Windows if the locale is set
Charlie Clark added the comment: Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 21:26:53) [MSC v.1916 32 bit (Intel)] on win32 -- ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36792] zipfile.writestr causes a Python crash on Windows if the locale is set
Charlie Clark added the comment: That's what we thought when we looked at it, but as I said, I couldn't reproduce it with just the `time` call or the `ZInfo` instantiation, so something odd is happening. I do have a German version of Windows as I suspect the original reporter does. You'd think that sort of thing wouldn't matter… -- ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36792] zipfile.writestr causes a Python crash on Windows if the locale is set
Charlie Clark added the comment: winver tells me I have 1809. I'm only using Windows in a VM so I'm not that familiar with its innards. Also get the error with WinPython 3.6: Windows fatal exception: code 0xc374 Current thread 0x10c0 (most recent call first): File "C:\Users\charlieclark\WPy64-3680\python-3.6.8.amd64\lib\zipfile.py", line 1658 in writestr File "", line 1 in -- ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36792] zipfile.writestr causes a Python crash on Windows if the locale is set
Charlie Clark added the comment: I can confirm the error is caused by time.localtime(time.time()) as indicated by the related bug. I've also found the crash log. It's in C:\ProgramData\Microsoft\Windows\WER\ReportQueue on my machine. Well, at least that's all I can find. -- Added file: https://bugs.python.org/file48303/Report.wer ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36792] zipfile.writestr causes a Python crash on Windows if the locale is set
Charlie Clark added the comment:
import time, locale
locale.setlocale(locale.LC_ALL, 'de_DE')
'de_DE'
time.strftime("%Z")
aborted (disconnected)
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[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment:
import ctypes, struct
libc = ctypes.cdll.msvcrt
buf = ctypes.create_string_buffer(1024)
tm = struct.pack('9i', 2019, 5, 6, 9, 50, 4, 0, 126, 1)
print('count:', libc.strftime(buf, 1024, b'%Z', tm))
print('value:', buf.value)
count: 28
value: b'Mitteleurop\xe4ische Sommerzeit'
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[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment:
import ctypes, struct
libc = ctypes.cdll.msvcrt
buf = ctypes.create_string_buffer(1024)
tm = struct.pack('9i', 2019, 5, 6, 9, 50, 4, 0, 126, 1)
print('count:', libc.strftime(buf, 1024, b'%Z', tm))
print('value:', buf.value)
wbuf = ctypes.create_unicode_buffer(1024)
print('count:', libc.wcsftime(wbuf, 1024, '%Z', tm))
print('value:', wbuf.value)
print('count:', libc.mbstowcs(wbuf, buf, 1024))
print('value:', wbuf.value)
count: 28
value: b'Mitteleurop\xe4ische Sommerzeit'
count: 28
value: Mitteleuropäische Sommerzeit
count: 28
value: Mitteleuropäische Sommerzeit
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[issue36792] [Windows] time: crash on formatting time with de_DE locale
Change by Charlie Clark : Added file: https://bugs.python.org/file48307/WER9DB9.tmp.WERInternalMetadata.xml ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment:
The code crashes on this line:
print('count:', crt_time.strftime(buf, 1024, b'%Z', tm))
--
Added file: https://bugs.python.org/file48306/Report.wer
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[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment: If the process crashes at the first print statement, I'm not sure how I can run the tests. Or should I try them separately? -- ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment:
print('count:', crt_time.wcsftime(wbuf, 1024, '%Z', tm)) also fails
but
crt_convert = ctypes.CDLL('api-ms-win-crt-convert-l1-1-0', use_errno=True)
print('count:', crt_convert.mbstowcs(wbuf, buf, 1024))
seems to work okay.
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[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment:
And this is the result.
old locale: C
count: 28
value: Mitteleuropäische Sommerzeit
new locale: de_DE
count: -1
value:
Windows fatal exception: code 0xc374
Looks like
print('new locale:', crt_locale._wsetlocale(0, 'de_DE'))
print('count:', crt_time.wcsftime(wbuf, 1024, '%Z', tm))
is the culprit.
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[issue36792] [Windows] time: crash on formatting time with de_DE locale
Charlie Clark added the comment: This is the result \issue36792>test.exe The current locale is now: C The time zone is: 'Mitteleuropõische Sommerzeit' (28 characters) The updated locale is now: de_DE The time zone is: '' (-1 characters) NB something is wrong with that string. Should be Mitteleuropäsiche Sommerzeit but that could just be an encoding thing. -- ___ Python tracker <https://bugs.python.org/issue36792> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15460] SQLite cursor.description is not DB-API compatible
New submission from Charlie Clark : It says in the docs: """This read-only attribute provides the column names of the last query. To remain compatible with the Python DB API, it returns a 7-tuple for each column where the last six items of each tuple are None.""" According to the DB-API, however, the first two items, name and type, must be specified: """ The first two items (name and type_code) are mandatory, the other five are optional and are set to None if no meaningful values can be provided. """ Even with it's limited number of types SQLite is typed and should be able to return the type for column. -- components: Library (Lib) messages: 166498 nosy: CharlieX priority: normal severity: normal status: open title: SQLite cursor.description is not DB-API compatible type: behavior ___ Python tracker <http://bugs.python.org/issue15460> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
