[issue7426] StringIO and with statement
New submission from Jean-Michel Fauth wxjmfa...@gmail.com:
When toying with the with statement, I fell on this:
Python 2.6.4
with open('abc.txt', 'r') as f:
for line in f:
print line.rstrip()
abc
def
import StringIO
fo = StringIO.StringIO('abc\ndef\n')
fo.seek(0)
with fo as f2:
for line in f2:
print line.rstrip()
Traceback (most recent call last):
File psi last command, line 2, in module
AttributeError: StringIO instance has no attribute '__exit__'
Same result with cStringIO
-
Python 3.1.1
fo = io.StringIO('abc\ndef\n')
fo.seek(0)
0
with fo as f:
for line in f:
print(line.rstrip())
abc
def
--
components: None
messages: 95924
nosy: jmfauth
severity: normal
status: open
title: StringIO and with statement
type: behavior
versions: Python 2.6
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[issue7426] StringIO and with statement
Changes by Antoine Pitrou pit...@free.fr: -- nosy: +alexandre.vassalotti ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7426 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7414] Format code C is missing from skipitem() in getargs.c
Mark Dickinson dicki...@gmail.com added the comment: Thanks! Fixed in r76646 (py3k) and r76647 (release31-maint). -- nosy: +mark.dickinson resolution: - fixed stage: - committed/rejected status: open - closed type: - behavior versions: +Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7414 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7327] format: minimum width: UTF-8 separators and decimal points
Mark Dickinson dicki...@gmail.com added the comment: Reassigning to Eric. -- assignee: mark.dickinson - eric.smith ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7327 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7327] format: minimum width: UTF-8 separators and decimal points
Eric Smith e...@trueblade.com added the comment: I've raised the issue with unicode and locale on python-dev: http://mail.python.org/pipermail/python-dev/2009-December/094408.html Pending the outcome of that decision, I'll move forward on this issue. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7327 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6985] range() fails with long integers
Mark Dickinson dicki...@gmail.com added the comment: I suspect the ints in builtin_range should have been changed to Py_ssize_t when PEP 353 was implemented. I've fixed them in trunk in r76625; it doesn't seem worth changing this in the 2.6 branch. So on an LP64 machine with sufficient memory, range(2**31) should now work. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6985 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6985] range() fails with long integers
Mark Dickinson dicki...@gmail.com added the comment: Whoops. That revision number should have been r76648. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6985 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6645] multiprocessing build fails on AIX - /dev/urandom (or equivalent) not found
David Narayan david.nara...@gmail.com added the comment: This is a patch that I have used on AIX. The idea for this patch came from uuid.py. This patch was created against Python 2.6.4. -- keywords: +patch nosy: +davidnarayan Added file: http://bugs.python.org/file15445/multiprocessing-urandom-fallback.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6645 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6895] locale._parse_localename fails when localename does not contain encoding information
Changes by Barry A. Warsaw ba...@python.org: -- versions: +Python 2.6, Python 2.7, Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6895 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5985] Implement os.path.samefile and os.path.sameopenfile on Windows
Erik Carstensen sandb...@virtutech.com added the comment: Once I considered this approach, but problems was that nFileIndexLow/High can change every time file handle is opened, so it's not unique. See remarks in following page. http://msdn.microsoft.com/en-us/library/aa363788%28VS.85%29.aspx Actually, that page only says that file identities may vary over time, and that it may happen during operations such as defragmentation. However, I have been in contact with a customer who observed a file system where the file index actually changed every time a file was closed and re-opened, given that nobody else kept the file open inbetween. This was on some kind of network mount, I wasn't told which kind (and I couldn't reproduce it with samba). This means that it's actually essential that you don't close the file between the CreateFile calls (and yes, your patch does this correctly). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5985 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6895] locale._parse_localename fails when localename does not contain encoding information
Martin v. Löwis mar...@v.loewis.de added the comment: Assigning to MAL, as this is his code. -- assignee: loewis - lemburg nosy: +lemburg ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6895 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue5985] Implement os.path.samefile and os.path.sameopenfile on Windows
Changes by Terry J. Reedy tjre...@udel.edu: -- nosy: -tjreedy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue5985 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2441] Mac build_install.py script fetches unavailable SQLite version
Changes by Ronald Oussoren ronaldousso...@mac.com: -- assignee: glyph - ronaldoussoren nosy: +ronaldoussoren ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2441 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2441] Mac build_install.py script fetches unavailable SQLite version
Gerhard Häring g...@ghaering.de added the comment: This has long been fixed. Even for 2.6maint the SQLite version currently being fetched is 3.6.11. -- resolution: - out of date status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2441 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7427] BadStatusLine is hell to debug
New submission from djc dirk...@ochtman.nl:
For whatever reason, BadStatusLine tracebacks often don't show the line
passed into them. Given the errr, heavy architecture of httplib, this
makes it pretty bad to debug. It's not clear to me why this is:
Traceback (most recent call last):
File /home/djc/src/couchdb-python/couchdb/tests/client.py, line 138,
in test_attachment_crud_with_files
doc = self.db['foo']
File /home/djc/src/couchdb-python/couchdb/client.py, line 293, in
__getitem__
_, _, data = self.resource.get(id)
File /home/djc/src/couchdb-python/couchdb/http.py, line 333, in get
return self._request('GET', path, headers=headers, **params)
File /home/djc/src/couchdb-python/couchdb/http.py, line 350, in _request
credentials=self.credentials)
File /home/djc/src/couchdb-python/couchdb/http.py, line 179, in request
resp = _try_request()
File /home/djc/src/couchdb-python/couchdb/http.py, line 167, in
_try_request
return conn.getresponse()
File /usr/lib/python2.6/httplib.py, line 950, in getresponse
File /usr/lib/python2.6/httplib.py, line 390, in begin
File /usr/lib/python2.6/httplib.py, line 354, in _read_status
BadStatusLine
However, some interactive testing shows that this should work:
d...@enrai couchdb-python $ python
Python 2.6.2 (r262:71600, Oct 5 2009, 12:18:48)
[GCC 4.3.2] on linux2
Type help, copyright, credits or license for more information.
class CrapShoot(Exception):
... def __init__(self, a):
... self.args = a,
...
raise CrapShoot('a')
Traceback (most recent call last):
File stdin, line 1, in module
__main__.CrapShoot: a
class ParentExc(Exception):
... pass
...
class CrapShoot(ParentExc):
... def __init__(self, a):
... self.args = a,
...
raise CrapShoot('a')
Traceback (most recent call last):
File stdin, line 1, in module
__main__.CrapShoot: a
Definition of BadStatusLine:
class BadStatusLine(HTTPException):
def __init__(self, line):
self.args = line,
self.line = line
class HTTPException(Exception):
# Subclasses that define an __init__ must call Exception.__init__
# or define self.args. Otherwise, str() will fail.
pass
The note here seems like a cautionary but insufficient tale...
--
components: Library (Lib)
messages: 95934
nosy: djc
severity: normal
status: open
title: BadStatusLine is hell to debug
versions: Python 2.6
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[issue7427] BadStatusLine is hell to debug
djc dirk...@ochtman.nl added the comment: Also, it might be useful here if it showed repr(line) instead of just line, but that'd just be icing on the cake. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7427 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7428] Possible memory issue with optparse
New submission from Bill Spotz wfsp...@sandia.gov: I develop python extension modules for Trilinos, a large scientific computing project: http://trilinos.sandia.gov Unit testing my extension modules under Mac OS X, I came across the following error messages after upgrading from gcc 4.0 to basically any higher version: python(65587) malloc: *** error for object 0x1715674: Non-aligned pointer being freed Debugging the problem (which occurs for me in several places in several test scripts), the error was always being raised in the built-in C++ method ostream::operator(int) which indicated to me that the problem was really probably somewhere else, and just being triggered in the ostream operator. Trying to isolate the problem in a smaller script, I was unable to reproduce the error until I added import optparse By the same token, I was able to eliminate the problem in my test scripts by getting rid of import optparse. I have changed these scripts now to use getopt, and they are running without error, but I thought I would report this strange behavior. I realize after all of this that the problem might not actually be with optparse, but it sure seems like a likely culprit. I would be happy to work with someone to try to reproduce the error, and then hopefully such a python expert would be able to find the actual issue. -- components: Extension Modules messages: 95936 nosy: wfspotz severity: normal status: open title: Possible memory issue with optparse type: resource usage versions: Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7428 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6895] locale._parse_localename fails when localename does not contain encoding information
Marc-Andre Lemburg m...@egenix.com added the comment: The reason this call fails is that there's no locale alias defined for ml_IN in the local_alias dictionary. While the patch is probably a good idea, it also hides the missing mapping. I think a better approach would be to check the locale name for standards compliance (ie. xx_YY format) and only then use it as fallback solution. I'll update the locale_alias dictionary to the X.org version 2009-12-08 (unless you know an even more recent version). This includes the missing 'ml_IN' mapping (among a few other additions and updates). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6895 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7381] subprocess.check_output: docstring has inconsistent leading whitespace
Changes by flox la...@yahoo.fr: Removed file: http://bugs.python.org/file15386/issue7381_first.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7381 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7381] subprocess.check_output: docstring has inconsistent leading whitespace
flox la...@yahoo.fr added the comment: Patch against the trunk, and against the Py3k branch. It fixes: * docstring and documentation formatting * and examples -- assignee: - georg.brandl components: +Documentation nosy: +georg.brandl versions: +Python 2.6, Python 2.7 Added file: http://bugs.python.org/file15446/issue7381.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7381 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7381] subprocess.check_output: docstring has inconsistent leading whitespace
Changes by flox la...@yahoo.fr: Added file: http://bugs.python.org/file15447/issue7381_py3k.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7381 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7429] PrettyPrinter cannot print dicts with unsortable keys
New submission from Martin Altmayer martin.altma...@web.de:
In the following code I use a class for dictionary-keys that has a
__hash__-function but cannot be ordered and try to print that dictionary
with a PrettyPrinter.
import pprint
pp = pprint.PrettyPrinter()
# A class that supports hashing and comparison for equality but cannot
be ordered
class KeyClass:
def __init__(self,id):
self.id = id
def __eq__(self,other):
return self.id == other.id
def __ne__(self,other):
return self.id != other.id
def __hash__(self):
return self.id
dictionary = dict.fromkeys([KeyClass(i) for i in range(10)])
pp.pprint(dictionary)
The script crashes with the following errors:
Traceback (most recent call last):
File /usr/local/lib/python3.1/pprint.py, line 272, in _safe_repr
items = sorted(items)
TypeError: unorderable types: KeyClass() KeyClass()
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File bug.py, line 20, in module
pp.pprint(dictionary)
File /usr/local/lib/python3.1/pprint.py, line 106, in pprint
self._format(object, self._stream, 0, 0, {}, 0)
File /usr/local/lib/python3.1/pprint.py, line 129, in _format
rep = self._repr(object, context, level - 1)
File /usr/local/lib/python3.1/pprint.py, line 216, in _repr
self._depth, level)
File /usr/local/lib/python3.1/pprint.py, line 228, in format
return _safe_repr(object, context, maxlevels, level)
File /usr/local/lib/python3.1/pprint.py, line 277, in _safe_repr
items = sorted(items, key=sortkey)
TypeError: unorderable types: KeyClass() KeyClass()
--
components: None
messages: 95939
nosy: maranos
severity: normal
status: open
title: PrettyPrinter cannot print dicts with unsortable keys
versions: Python 3.1
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[issue1398] Can't pickle partial functions
flox la...@yahoo.fr added the comment: It seems fixed on trunk. It is fixed on Python 3.1 and 3.2, too. With Python 2.6 I see the error: ./python partial_bug.py TypeError: can't pickle partial objects Documentation for trunk and py3k is OK? -- nosy: +flox ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1398 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7428] Possible memory issue with optparse
Martin v. Löwis mar...@v.loewis.de added the comment: optparse itself is a pure-python library, so it can't possibly cause memory errors. Thanks for the report, but there isn't any realistic chance that we can do anything with it. So closing it as won't fix. If you want to debug it further, I would run a debug version of malloc. Not sure whether OSX comes with one (apart from Python's own memory debugging), if not, I'd use a memory debugger on a different platform. -- nosy: +loewis resolution: - wont fix status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7428 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7429] PrettyPrinter cannot print dicts with unsortable keys
David W. Lambert b49p23t...@stny.rr.com added the comment: I believe this issue was resolved---expect it in a future release. -- nosy: +LambertDW ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7429 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7430] cmp still sends messages
New submission from David W. Lambert b49p23t...@stny.rr.com: ''' RuntimeError: maximum recursion depth exceeded in cmp Python 3.1.1 (r311:74480, Oct 2 2009, 12:29:57) [GCC 4.3.3] on linux2 ''' import itertools,pprint combos = itertools.combinations def connect(nodes,a,b): nodes[a].append(b) nodes[b].append(a) def insert(nodes,components): if components == 0: pprint.pprint(nodes) for (i,node,) in enumerate(nodes): if not node: break i += 2 for joints in combos(range(i),2): connect(nodes,*joints) nest = [node[:]for node in nodes] insert(nest,components-1) def e155(components): if components 1: return 0 network = [[]for i in range((components+1)*2)] insert(network,components) return network e155(2) -- messages: 95943 nosy: LambertDW severity: normal status: open title: cmp still sends messages versions: Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7430 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4380] Deepcopy of functools.partial gives wierd exception
flox la...@yahoo.fr added the comment: Already fixed on Python trunk (2.7). Fixed on branches 3.1 and 3.2, too. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4380 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7430] cmp still sends messages
Mark Dickinson dicki...@gmail.com added the comment: How about maximum recursion depth exceeded in comparison instead? (It's coming from PyObject_RichCompare in Objects/object.c, by the way.) -- nosy: +mark.dickinson ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7430 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4120] Do not embed manifest files in *.pyd when compiling with MSVC
Martin v. Löwis mar...@v.loewis.de added the comment: Thanks for the patch. Committed as r76651, r76652, r76653, r76654, r76655 and r76656. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4120 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4120] Do not embed manifest files in *.pyd when compiling with MSVC
Changes by Martin v. Löwis mar...@v.loewis.de: -- resolution: - accepted status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4120 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue6834] use different mechanism for pythonw on osx
Ned Deily n...@acm.org added the comment: Another reminder: when implementing, make sure platform.architecture() always returns the correct results for bits. It seems the Apple patches in 10.6 don't handle that (it seems to always report 64-bit), probably because the code in platform.architecture() doesn't look quite robust enough. (I'll open a bug with Apple.) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue6834 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7431] UnboundLocalError during test.test_linecache.LineCacheTests
New submission from ivank i...@ludios.org: Python 2.7, svn r76655. I ran the tests with python2.7 Lib/test/testall.py test-results.txt test_linecache test_checkcache (test.test_linecache.LineCacheTests) ... ERROR test_clearcache (test.test_linecache.LineCacheTests) ... ok test_getline (test.test_linecache.LineCacheTests) ... ok == ERROR: test_checkcache (test.test_linecache.LineCacheTests) -- Traceback (most recent call last): File /opt/Python-latest/lib/python2.7/test/test_linecache.py, line 121, in test_checkcache source.close() UnboundLocalError: local variable 'source' referenced before assignment -- Ran 3 tests in 0.022s FAILED (errors=1) test test_linecache failed -- Traceback (most recent call last): File /opt/Python-latest/lib/python2.7/test/test_linecache.py, line 121, in test_checkcache source.close() UnboundLocalError: local variable 'source' referenced before assignment -- components: Library (Lib) messages: 95948 nosy: ivank severity: normal status: open title: UnboundLocalError during test.test_linecache.LineCacheTests type: behavior versions: Python 2.7 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7431 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7431] UnboundLocalError during test.test_linecache.LineCacheTests
ivank i...@ludios.org added the comment: This error is just masking a Permission denied error during source = open(source_name, 'w') so I guess it's not very important, just annoying. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7431 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7432] Py3k doc: from __future__ import division not necessary
New submission from Jared Grubb pyt...@jaredgrubb.com: In the Python 3.1 docs for the 'dis' module, the following appears: ( http://docs.python.org/3.1/library/dis.html ) BINARY_TRUE_DIVIDE()¶ Implements TOS = TOS1 / TOS when from __future__ import division is in effect. There is always true in 3k, correct? The when clause should be removed. -- assignee: georg.brandl components: Documentation messages: 95950 nosy: georg.brandl, jaredgrubb severity: normal status: open title: Py3k doc: from __future__ import division not necessary versions: Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7432 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7432] Py3k doc: from __future__ import division not necessary
Jared Grubb pyt...@jaredgrubb.com added the comment: Ditto on a few dozen lines later: INPLACE_TRUE_DIVIDE()¶ Implements in-place TOS = TOS1 / TOS when from __future__ import division is in effect. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7432 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7433] MemoryView memory_getbuf causes segfaults, double call to tp_releasebuffer
New submission from Pauli Virtanen p...@iki.fi:
The following code causes a segmentation fault (or glibc error, or other
problems):
x = someobject()
y = memoryview(x)
z = memoryview(y)
The problem is that someobject.bf_releasebuffer will be called two times
with an identical Py_buffer structure.
This can be seen in memoryobject.c:
static int
memory_getbuf(PyMemoryViewObject *self, Py_buffer *view, int flags)
{
int res = 0;
/* XXX for whatever reason fixing the flags seems necessary */
if (self-view.readonly)
flags = ~PyBUF_WRITABLE;
if (self-view.obj != NULL)
res = PyObject_GetBuffer(self-view.obj, view, flags);
if (view)
dup_buffer(view, self-view);
return res;
}
At the end of the call, view and self-view contain identical data
because of the call to dup_buffer.
static void
memory_releasebuf(PyMemoryViewObject *self, Py_buffer *view)
{
PyBuffer_Release(view);
}
But when the outer memoryview is destroyed, memory_releasebuf calls
PyBuffer_Release for the original object once.
And when the inner memoryview is destroyed, PyBuffer_Release is called
by memory_dealloc the second time. Both calls supply an identical
Py_buffer structure.
Now, if the original object's bf_getbuffer and bf_releasebuffer allocate
some memory dynamically, this will likely cause a double-free of memory,
usually leading to a segmentation fault.
There is no feasible way the bf_releasebuffer can keep track of how many
calls to it have been made. So probably the code in memory_getbuf is
wrong -- at least the dup_buffer function looks wrong.
--
components: Interpreter Core
messages: 95952
nosy: pv
severity: normal
status: open
title: MemoryView memory_getbuf causes segfaults, double call to
tp_releasebuffer
versions: Python 3.1
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[issue7433] MemoryView memory_getbuf causes segfaults, double call to tp_releasebuffer
Changes by Pauli Virtanen p...@iki.fi: -- type: - crash ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7433 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7429] PrettyPrinter cannot print dicts with unsortable keys
R. David Murray rdmur...@bitdance.com added the comment: Confirmed, it is fixed on all maintained branches. So the fix will be in 3.1.2, which should be in a month or so. -- components: +Library (Lib) -None nosy: +r.david.murray priority: - normal resolution: - out of date status: open - closed type: - behavior ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7429 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7385] MemoryView_FromObject crashes if PyBuffer_GetBuffer fails
Changes by Pauli Virtanen p...@iki.fi: -- type: - crash ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7385 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7431] UnboundLocalError during test.test_linecache.LineCacheTests
Changes by R. David Murray rdmur...@bitdance.com: -- assignee: - r.david.murray components: +Tests -Library (Lib) nosy: +r.david.murray priority: - low versions: +Python 2.6, Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7431 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7431] UnboundLocalError during test.test_linecache.LineCacheTests
R. David Murray rdmur...@bitdance.com added the comment: Fixed in r76659, r76660, r76661, and r76662. I also changed the open to use 'with' so that errors raised by the open will not be masked. Flox, given how active you are being, you might enjoy joining us in #python-dev on freenode. -- resolution: - fixed stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7431 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7406] int arithmetic relies on C signed overflow behaviour
Zooko O'Whielacronx zo...@zooko.com added the comment:
Here is a way to test for overflow which is correct for any C implementation:
static PyObject *
int_add(PyIntObject *v, PyIntObject *w)
{
register long a, b;
CONVERT_TO_LONG(v, a);
CONVERT_TO_LONG(w, b);
if (((a0)(b0)((LONG_MAX-a)b))
||((a0)(b0)((LONG_MIN-a)b))) {
/* would overflow the long type */
return PyLong_Type.tp_as_number-nb_add((PyObject *)v, (PyObject
*)w);
}
return PyInt_FromLong(a+b);
}
--
nosy: +zooko
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[issue7406] int arithmetic relies on C signed overflow behaviour
Zooko O'Whielacronx zo...@zooko.com added the comment: Here is a set of macros that I use to test for overflow: http://allmydata.org/trac/libzutil/browser/libzutil/zutilimp.h -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7406 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
