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Merged revisions 75011 via svnmerge from

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svn+ssh://pythondev@svn.python.org/python/trunk

........
  r75011 | brett.cannon | 2009-09-21 17:29:48 -0700 (Mon, 21 Sep 2009) | 10 lines

  When range checking was added to time.strftime() a check was placed on tm_isdst
  to make sure it fell within [-1, 1] just in case someone implementing
  strftime() in libc was stupid enough to assume this. Turns out, though, some
  OSs (e.g. zOS) are stupid enough to use values outside of this range for time
  structs created by the system itself. So instead of throwing a ValueError,
  tm_isdst is now normalized before being passed to strftime().

  Fixes issue #6823. Thanks Robert Shapiro for diagnosing the problem and
  contributing an initial patch.
........
This commit is contained in:
Brett Cannon 2009-09-22 00:32:59 +00:00
parent ca767bd2db
commit 7d12c559ce
3 changed files with 8 additions and 10 deletions
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5
Lib/test/test_time.py
View File

@ -87,11 +87,6 @@ class TimeTestCase(unittest.TestCase):
(1900, 1, 1, 0, 0, 0, 0, -1, -1))
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, 0, 367, -1))
# Check daylight savings flag [-1, 1]
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, 0, 1, -2))
self.assertRaises(ValueError, time.strftime, '',
(1900, 1, 1, 0, 0, 0, 0, 1, 2))
def test_default_values_for_zero(self):
# Make sure that using all zeros uses the proper default values.

1
Misc/ACKS
View File

@ -674,6 +674,7 @@ Jerry Seutter
Denis Severson
Ian Seyer
Ha Shao
Richard Shapiro
Bruce Sherwood
Pete Shinners
Michael Shiplett

12
Modules/timemodule.c
View File

@ -512,11 +512,13 @@ time_strftime(PyObject *self, PyObject *args)
PyErr_SetString(PyExc_ValueError, "day of year out of range");
return NULL;
}
if (buf.tm_isdst < -1 || buf.tm_isdst > 1) {
PyErr_SetString(PyExc_ValueError,
"daylight savings flag out of range");
return NULL;
}
/* Normalize tm_isdst just in case someone foolishly implements %Z
based on the assumption that tm_isdst falls within the range of
[-1, 1] */
if (buf.tm_isdst < -1)
buf.tm_isdst = -1;
else if (buf.tm_isdst > 1)
buf.tm_isdst = 1;
#ifdef HAVE_WCSFTIME
tmpfmt = PyBytes_FromStringAndSize(NULL,