[issue13885] CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure
New submission from Antoine Pitrou pit...@free.fr: Original e-mail from Apple security team: Follow-up: 187806281 SSL 3.0 and TLS 1.0 are vulnerable to an attack described at http://www.openssl.org/~bodo/tls-cbc.txt OpenSSL includes a countermeasure which prevents the attack, but python 2.7 has, around line 372 of Modules/_ssl.c: SSL_CTX_set_options(self-ctx, SSL_OP_ALL); SSL_OP_ALL includes SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS which disables the countermeasure. 2.6 is similar. -- components: Extension Modules messages: 152068 nosy: barry, benjamin.peterson, loewis, pitrou priority: critical severity: normal stage: commit review status: open title: CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure type: security versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13885 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13885] CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure
Antoine Pitrou pit...@free.fr added the comment: Attaching patches. -- Added file: http://bugs.python.org/file24336/CVE-2011-3389-3.2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13885 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13885] CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure
Changes by Antoine Pitrou pit...@free.fr: -- keywords: +patch Added file: http://bugs.python.org/file24335/CVE-2011-3389-2.7.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13885 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Martin v. Löwis mar...@v.loewis.de added the comment: Could the AVL tree approach be extended to apply to dictionaries containing keys of any single type that supports comparison? That approach would autodetect UserString or similar and support it properly. I think we would need a place to store the single key type, which, from an ABI point of view, might be difficult to find (but we could overload ma_smalltable for that, or reserve ma_table[0]). In addition, I think it is difficult to determine whether a type supports comparison, at least in 2.x. For example, class X: def __eq__(self, o): return self.a == o.a allows to create objects x and y so that xyz, yet x==z. For 3.x, we could assume that a failure to support comparison raises an exception, in which case we could just wait for the exception to happen, and then flatten the dictionary and start over with the lookup. This would extend even to mixed key types. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13885] CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure
Roundup Robot devn...@psf.upfronthosting.co.za added the comment: New changeset 9a4131ada792 by Antoine Pitrou in branch '2.6': Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC IV attack countermeasure. http://hg.python.org/cpython/rev/9a4131ada792 New changeset 8dec547c23d3 by Antoine Pitrou in branch '2.7': Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC IV attack countermeasure. http://hg.python.org/cpython/rev/8dec547c23d3 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13885 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13885] CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure
Roundup Robot devn...@psf.upfronthosting.co.za added the comment: New changeset e7706bdaaa0d by Antoine Pitrou in branch '3.1': Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC IV attack countermeasure. http://hg.python.org/cpython/rev/e7706bdaaa0d New changeset 4386686a035d by Antoine Pitrou in branch '3.2': Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC IV attack countermeasure. http://hg.python.org/cpython/rev/4386686a035d New changeset d1390175fdc6 by Antoine Pitrou in branch 'default': Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC IV attack countermeasure. http://hg.python.org/cpython/rev/d1390175fdc6 -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13885 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13885] CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure
Antoine Pitrou pit...@free.fr added the comment: This hopefully fixes the issue. -- resolution: - fixed stage: commit review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13885 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13873] SIGBUS in test_zlib on Debian bigmem buildbot
Nadeem Vawda nadeem.va...@gmail.com added the comment: I've also been unable to reproduce it on my own machine (AMD64; 8GB RAM). I guess I'll have to do some trial-and-error debugging using the custom builder to figure this out. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13873 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13848] io.open() doesn't check for embedded NUL characters
Antoine Pitrou pit...@free.fr added the comment: Indeed, there seems to be no mechanism available to forbid NUL chars under Windows (for Python 3.x): open(LICENSE\x00foobar) _io.TextIOWrapper name='LICENSE\x00foobar' mode='r' encoding='cp1252' os.stat(LICENSE\x00foobar) nt.stat_result(st_mode=33206, st_ino=2251799813779714, st_dev=0, st_nlink=1, st_uid=0, st_gid=0, st_size=15132, st_atime=8589934592, st_mtime=8589934592, st_ctime=1301169903) I think PyUnicode_AsUnicode should grow a NUL char check in Python 3.3, since it doesn't return the size anyway. I don't think we can do that in previous versions, though, so we need an alternate strategy. Scanning the unicode string for NUL characters is enough. That should be easy by using PyUnicode_AsUnicodeAndSize. As for the patch: - the test should be in test_io; you may also add a separate in test_fileio - conv_name is never decref'ed, and so there will be a memory leak -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13848 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1003195] segfault when running smtplib example
Changes by Charles-François Natali neolo...@free.fr: -- resolution: wont fix - status: closed - open ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1003195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13877] segfault when running smtplib example
Charles-François Natali neolo...@free.fr added the comment: See (permanently closed?) similar bug at: I reopened it. -- nosy: +neologix resolution: - duplicate stage: - committed/rejected status: open - closed superseder: - segfault when running smtplib example ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13877 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13848] io.open() doesn't check for embedded NUL characters
Antoine Pitrou pit...@free.fr added the comment: Since the NUL-scanning will be useful for Modules/posixmodule.c as well, perhaps it should be done as a private _PyUnicode_HasNULChars() function. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13848 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13812] multiprocessing package doesn't flush stderr on child exception
Roundup Robot devn...@psf.upfronthosting.co.za added the comment: New changeset 2863d9273abd by Antoine Pitrou in branch '3.2': Issue #13812: When a multiprocessing Process child raises an exception, flush stderr after printing the exception traceback. http://hg.python.org/cpython/rev/2863d9273abd New changeset 96c1de5acbd3 by Antoine Pitrou in branch 'default': Issue #13812: When a multiprocessing Process child raises an exception, flush stderr after printing the exception traceback. http://hg.python.org/cpython/rev/96c1de5acbd3 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13812 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13812] multiprocessing package doesn't flush stderr on child exception
Antoine Pitrou pit...@free.fr added the comment: Patch now committed, thanks. -- resolution: - fixed stage: patch review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13812 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13886] readline-related test_builtin failure
New submission from Nadeem Vawda nadeem.va...@gmail.com: I've recently come across a strange failure in the tests for the input() built-in function: $ ./python -E -m test -v test_readline test_builtin [... snip ...] == FAIL: test_input_tty_non_ascii (test.test_builtin.BuiltinTest) -- Traceback (most recent call last): File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1079, in test_input_tty_non_ascii self.check_input_tty(prompté, bquux\xe9, utf-8) File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1070, in check_input_tty self.assertEqual(input_result, expected) AssertionError: 'quux' != 'quux\udce9' - quux + quux\udce9 ? + == FAIL: test_input_tty_non_ascii_unicode_errors (test.test_builtin.BuiltinTest) -- Traceback (most recent call last): File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1083, in test_input_tty_non_ascii_unicode_errors self.check_input_tty(prompté, bquux\xe9, ascii) File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1070, in check_input_tty self.assertEqual(input_result, expected) AssertionError: 'quux' != 'quux\udce9' - quux + quux\udce9 ? + The failure only manifests itself if the readline module is loaded before test_builtin runs (hence the presence of test_readline above). It will not occur if regrtest is run with either of the -j or -W flags (which is why it hasn't been seen on the buildbots). The problem seems to be that readline assumes that its input should use the locale encoding, and silently strips out any undecodable chars. This breaks the tests mentioned above, since they set up sys.stdin to use the surrogateescape error handler, expecting invalid characters to be escaped rather than discarded. This problem doesn't crop up if readline is *not* loaded, because in that case PyOS_Readline() falls back to a stdio-based implementation (PyOS_StdioReadline()) that preserves invalid characters, allowing them to be handled properly by sys.stdin's encoding and error handler. I have been able to fix the test failures with the attached patch, which stops readline from eating invalid characters, making it consistent with the stdio-based fallback. Can someone with more knowledge of readline and/or locale issues advise whether the change is a good idea? -- components: Extension Modules files: rl-locale.diff keywords: patch messages: 152080 nosy: nadeem.vawda priority: normal severity: normal stage: patch review status: open title: readline-related test_builtin failure type: behavior versions: Python 3.2, Python 3.3 Added file: http://bugs.python.org/file24337/rl-locale.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13886 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13880] pydoc -k throws AssertionError: distutils has already been patched by class py2exe.Distribution at 0x0000000005987408
Antoine Pitrou pit...@free.fr added the comment: For the record, the proposed solution in that e-mail is the following: B) Patch the run() method of pydoc module at line 1862: for importer, modname, ispkg in pkgutil.walk_packages(onerror=lambda s:None): -- components: +Library (Lib) nosy: +pitrou type: crash - behavior versions: +Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13880 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13886] readline-related test_builtin failure
Nadeem Vawda nadeem.va...@gmail.com added the comment: Here's another patch that ensures the test always exercises the GNU readline code path (rather than the stdio fallback). This will cause the failure to occur when running just test_builtin (no need to also run test_readline before it). Ideally we'd want to test both code paths, but I'm not sure how to accomplish that reliably, short of running the test in a subprocess. -- Added file: http://bugs.python.org/file24338/rl-test.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13886 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13887] defaultdict.get does not default to initial default but None
New submission from Jörn Hees nrej9...@joernhees.de: I wanted to create a function registrar d using a defaultdict. The library that this registrar is passed to expects it to return functions taking 3 args. Now if the first call is d.get(x) it seems that in contrast to d[x] the default arg of get is returned (None) instead of the defaultdicts default. If i call d[x] first and then d.get(x) i get what i expected. Example: In [1]: def foo(a,b,c): ...: return (a,b,c) ...: In [2]: from collections import defaultdict In [3]: d = defaultdict(lambda:foo) In [4]: d.get(1) In [5]: d[1] Out[5]: function foo at 0x1015a2ed8 In [6]: d.get(1) Out[6]: function foo at 0x1015a2ed8 In [7]: d.get(2)(1,2,3) --- TypeError Traceback (most recent call last) /Users/joern/ipython console in module() TypeError: 'NoneType' object is not callable In [8]: d[2](1,2,3) Out[8]: (1, 2, 3) In [9]: d.get(2)(1,2,3) Out[9]: (1, 2, 3) I'm not sure this is the desired behavior, but it wasn't quite what i expected from a dictionary with a default. If it is the desired behavior the documentation of defaultdict should include an explanation what happens. -- components: Extension Modules, Library (Lib) messages: 152083 nosy: joern priority: normal severity: normal status: open title: defaultdict.get does not default to initial default but None type: behavior versions: Python 2.7 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13887 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13888] test_builtin failure when run after test_tk
New submission from Nadeem Vawda nadeem.va...@gmail.com: While investigating issue 13886, I found that test_builtin will fail when run after test_tk: $ ./python -Wd -E -bb -m test -vuall test_tk test_builtin == CPython 3.3.0a0 (default:52f68c95e025, Jan 26 2012, 19:05:09) [GCC 4.6.1] == Linux-3.0.0-15-generic-x86_64-with-debian-wheezy-sid little-endian == /home/nadeem/src/cpython/def/build/test_python_4559 Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=1, verbose=0, bytes_warning=2, quiet=0) [... snip ...] == FAIL: test_input_tty (test.test_builtin.BuiltinTest) -- Traceback (most recent call last): File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1075, in test_input_tty self.check_input_tty(prompt, bquux) File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1059, in check_input_tty % (len(lines), child_output.read())) AssertionError: got 0 lines in pipe but expected 2, child output was: quux promptCurrent thread 0x7fb3bbed5720: File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1036 in check_input_tty File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1075 in test_input_tty File /home/nadeem/src/cpython/def/Lib/unittest/case.py, line 385 in _executeTestPart File /home/nadeem/src/cpython/def/Lib/unittest/case.py, line 440 in run File /home/nadeem/src/cpython/def/Lib/unittest/case.py, line 492 in __call__ File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 105 in run File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 67 in __call__ File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 105 in run File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 67 in __call__ File /home/nadeem/src/cpython/def/Lib/unittest/runner.py, line 168 in run File /home/nadeem/src/cpython/def/Lib/test/support.py, line 1369 in _run_suite File /home/nadeem/src/cpython/def/Lib/test/support.py, line 1403 in run_unittest File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1469 in test_main File /home/nadeem/src/cpython/def/Lib/test/regrtest.py, line 1221 in runtest_inner File /home/nadeem/src/cpython/def/Lib/test/regrtest.py, line 918 in runtest File /home/nadeem/src/cpython/def/Lib/test/regrtest.py, line 710 in main File /home/nadeem/src/cpython/def/Lib/test/__main__.py, line 13 in module File /home/nadeem/src/cpython/def/Lib/runpy.py, line 73 in _run_code File /home/nadeem/src/cpython/def/Lib/runpy.py, line 160 in _run_module_as_main == FAIL: test_input_tty_non_ascii (test.test_builtin.BuiltinTest) -- Traceback (most recent call last): File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1079, in test_input_tty_non_ascii self.check_input_tty(prompté, bquux\xe9, utf-8) File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1059, in check_input_tty % (len(lines), child_output.read())) AssertionError: got 0 lines in pipe but expected 2, child output was: quux promptCurrent thread 0x7fb3bbed5720: File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1036 in check_input_tty File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1079 in test_input_tty_non_ascii File /home/nadeem/src/cpython/def/Lib/unittest/case.py, line 385 in _executeTestPart File /home/nadeem/src/cpython/def/Lib/unittest/case.py, line 440 in run File /home/nadeem/src/cpython/def/Lib/unittest/case.py, line 492 in __call__ File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 105 in run File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 67 in __call__ File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 105 in run File /home/nadeem/src/cpython/def/Lib/unittest/suite.py, line 67 in __call__ File /home/nadeem/src/cpython/def/Lib/unittest/runner.py, line 168 in run File /home/nadeem/src/cpython/def/Lib/test/support.py, line 1369 in _run_suite File /home/nadeem/src/cpython/def/Lib/test/support.py, line 1403 in run_unittest File /home/nadeem/src/cpython/def/Lib/test/test_builtin.py, line 1469 in test_main File /home/nadeem/src/cpython/def/Lib/test/regrtest.py, line 1221 in runtest_inner File /home/nadeem/src/cpython/def/Lib/test/regrtest.py, line 918 in runtest File /home/nadeem/src/cpython/def/Lib/test/regrtest.py, line 710 in main File
[issue11682] PEP 380 reference implementation for 3.3
Nick Coghlan ncogh...@gmail.com added the comment: Just noting that the pep380 integration branch is also available in the hg.python.org clone of my sandbox repo. -- hgrepos: +107 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11682 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10181] Problems with Py_buffer management in memoryobject.c (and elsewhere?)
Nick Coghlan ncogh...@gmail.com added the comment: Aside from some minor comments that I included in my review, the latest patch gets a +1 from me. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10181 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13887] defaultdict.get does not default to initial default but None
Mark Dickinson dicki...@gmail.com added the comment: It's certainly intentional behaviour: all the defaultdict does is provide a __missing__ method. And as explained in http://docs.python.org/library/stdtypes.html#mapping-types-dict No other operations or methods invoke __missing__(). So it looks to me as though this issue should be either a doc issue, or a feature request for 3.3. Reclassifying as a doc issue. -- assignee: - docs@python components: +Documentation -Extension Modules, Library (Lib) nosy: +docs@python, mark.dickinson versions: +Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13887 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8536] Support new features of ZLIB 1.2.4
abhishek creativeabhishekg...@gmail.com added the comment: I think New features like inflateReset2(), inflateMark(), or Z_TREES flags are included in python 3.2.2. -- nosy: +abhishek_bits ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8536 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8536] Support new features of ZLIB 1.2.4
Nadeem Vawda nadeem.va...@gmail.com added the comment: No, the latest revision of Modules/zlibmodule.c doesn't use any of these new features. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8536 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10181] Problems with Py_buffer management in memoryobject.c (and elsewhere?)
Nick Coghlan ncogh...@gmail.com added the comment: Antoine's review picked up on several issues I missed or glossed over - I actually agree with his point about making most of the new APIs private rather than public. With regards to exposing _testbuffer in the documentation of memoryview's hash support, perhaps it would be better to use a 1D bytes object + memoryview.cast() to get an officially supported multi-dimensional view of a region of memory? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10181 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10181] Problems with Py_buffer management in memoryobject.c (and elsewhere?)
Antoine Pitrou pit...@free.fr added the comment: With regards to exposing _testbuffer in the documentation of memoryview's hash support, perhaps it would be better to use a 1D bytes object + memoryview.cast() to get an officially supported multi-dimensional view of a region of memory? By the way, I didn't point them, but there are other places in the memoryview doc where _testbuffer is mentioned. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10181 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13879] Argparse does not support subparser aliases in 2.7
Tim Willis schadenfreude...@gmail.com added the comment: Attaching a patch which merges aliases code from 3.2 back into 2.7. -- keywords: +patch Added file: http://bugs.python.org/file24339/argparse_aliases.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13879 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13885] CVE-2011-3389: _ssl module always disables the CBC IV attack countermeasure
Benjamin Peterson benja...@python.org added the comment: Thank you for handling this, Antoine! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13885 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13879] Argparse does not support subparser aliases in 2.7
Tim Willis schadenfreude...@gmail.com added the comment: adding package author to nosy list -- nosy: +bethard ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13879 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12328] multiprocessing's overlapped PipeConnection on Windows
sbt shibt...@gmail.com added the comment: Quite honestly I don't like the way that polling a pipe reads a partial message from the pipe. If at all possible, polling should not modify the pipe. I think the cleanest thing would be to switch to byte oriented pipes on Windows and create PipeIO which subclasses RawIOBase. (Since socket handles are really just overlapped file handles, PipeIO works for them too as long as closesocket() is used instead of CloseHandle().) On Unix FileIO would be used instead. Then Connection can just be a thin wrapper around a file object. Polling on Windows can then be done by creating a wrapper for an overlapped object which represents a zero length read, and can be used with WaitForMultipleObjects(). This lets us implement a select-like wait() function in Python which works with both sockets and Connection objects. Attached is an extension implementing PipeIO (and the overlapped wrapper), a Python module implementing Connection and wait(), and a test. -- Added file: http://bugs.python.org/file24340/PipeIO.zip ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12328 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13887] defaultdict.get does not default to initial default but None
Roundup Robot devn...@psf.upfronthosting.co.za added the comment: New changeset 089a086252fc by Benjamin Peterson in branch '3.2': note that get() is not affected by default_factory (closes #13887) http://hg.python.org/cpython/rev/089a086252fc New changeset 26612ad451ad by Benjamin Peterson in branch 'default': merge heads (#13887) http://hg.python.org/cpython/rev/26612ad451ad New changeset b2db66bc8e7f by Benjamin Peterson in branch '2.7': note that get() is not affected by default_factory (closes #13887) http://hg.python.org/cpython/rev/b2db66bc8e7f -- nosy: +python-dev resolution: - fixed stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13887 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4966] Improving Lib Doc Sequence Types Section
Nick Coghlan ncogh...@gmail.com added the comment: Branch status update: - Text Sequence Types section updated to reflect the new structure - changed the prose that describes the relationship between printf-style formatting and the str.format method (deliberately removing the implication that the former is any real danger of disappearing - it's simply not practical for us to seriously contemplate killing it off) - in the top level index, I split the old String Services section into Text Processing Services and Binary Data Services. The latter contains 'struct' and 'codecs', the former contains everthing else that used to be in String Services. The index pages for the two sections do cross-reference modules in the other section a bit (Text Processing includes a pointer directly to the codecs module, Binary Data includes pointers to both re and difflib). The real driver for this change was that struct has no place in a String Services section in Py3k. Since codecs could really have gone in either section, I mainly moved it to the binary section so that 'struct' wasn't the only module in there. Major remaining update is to the Binary Sequence Types section (since I haven't really reviewed that at all after rearranging things. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4966 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4966] Improving Lib Doc Sequence Types Section
Nick Coghlan ncogh...@gmail.com added the comment: One other things the branch doesn't currently sort out is the official signature of count() and index(). In 3.2, for *all* of str, bytes, bytearray, tuple, list, range, the index() method takes the optional start:stop parameters. collections.Sequence.index(), OTOH, does not. count() splits the field more evenly: str, bytes, bytearray accept the extra parameters, but list, tuple, range and collections.Sequence only support counting values in the whole sequence. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4966 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13889] str(float) and round(float) issues with FPU precision
New submission from Samuel Iseli samuel.is...@gmail.com: We are using python as an embedded scripting environment in our ERP-product. Since upgrading to python2.7 we have serious issues with floats: 28710.0 '2870:.0' round(28710.0) 2870.0 We are embedding Python in a Delphi-application. The problem was already discussed in issue9980 and has to do with Delphi setting the FPU precision to 64bit (and relying on this setting) while the standard with Microsoft Tools is 53bits. The routines _Py_dg_dtoa and _Py_dg_strtod in dtoa.c rely on the FPU precision set to 53bits. Issue9980 was closed as won't fix but I propose to reconsider this decision for the following reasons: - Delphi is still an important development environment for native win32 applications and has excellent Python embedding support through PythonForDelphi (http://code.google.com/p/python4delphi). - Ensuring 53bit before calling python code is not practical in an embedded python environment with extensions in delphi (python may also call code that is implemented in delphi). - The changes needed in pythoncore are minimal. Tests documented in issue9980 found no measurable performance impact. - FPU precision switching is needed and already (partially) implemented for linx, where 64bit prec is standard. Fixing this issues is absolutely vital for us, so we needed to compile a custom version of pythoncore. I appended a .diff file detailling the patch. Changes are needed in 2 places: - pyport.h, defining the _PY_SET_53_BIT_PRECISION macros for MS visual c compiler - floatobject.c, insert precision switching macros in _Py_double_round function. In pystrtod.c the precision switching macros are already used. pystrtod.c and floatobject.c are the only places in CPython where the dtoa.c functions are called. The macros for visual-c are activated by defining HAVE_VC_FUNC_FOR_X87 preprocessor-symbol. Hoping for inclusion of this patch. Cheers Samuel -- components: Interpreter Core files: 120127_float_dtoa_fix_py2.7.2.diff keywords: patch messages: 152099 nosy: samuel.iseli priority: normal severity: normal status: open title: str(float) and round(float) issues with FPU precision versions: Python 2.7, Python 3.1 Added file: http://bugs.python.org/file24341/120127_float_dtoa_fix_py2.7.2.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13874] test_faulthandler: read_null test fails with current clang
Changes by Jesús Cea Avión j...@jcea.es: -- nosy: +jcea ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13874 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4966] Improving Lib Doc Sequence Types Section
Ezio Melotti ezio.melo...@gmail.com added the comment: Have you considered/planned to rework a bit the beginning of the page too? (Technically the issue is about the Sequence types section, but the whole page could be improved.) IMHO the sections about Truth value testing, Boolean operations, and Comparison are out of place there, and True/False/None should be described instead. The idea is that a developer new to Python should be able to come to this page, take a look at the headers and figure out what the main types are (what you did so far is already a good step in the right direction). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4966 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13889] str(float) and round(float) issues with FPU precision
Changes by Eric V. Smith e...@trueblade.com: -- nosy: +eric.smith, mark.dickinson ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13874] test_faulthandler: read_null test fails with current clang
STINNER Victor victor.stin...@haypocalc.com added the comment: Oh, you can also try something else: add the volatile keyword. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13874 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13890] test_importlib failures under Windows
New submission from Antoine Pitrou pit...@free.fr: I don't know if these are related to the latest changes, but they only appear on the 3.3 buildbots: == FAIL: test_case_insensitivity (importlib.test.extension.test_case_sensitivity.ExtensionModuleCaseSensitivityTest) -- Traceback (most recent call last): File D:\cygwin\home\db3l\buildarea\3.x.bolen-windows7\build\lib\importlib\test\extension\test_case_sensitivity.py, line 30, in test_case_insensitivity self.assertTrue(hasattr(loader, 'load_module')) AssertionError: False is not true == FAIL: test_insensitive (importlib.test.source.test_case_sensitivity.CaseSensitivityTest) -- Traceback (most recent call last): File D:\cygwin\home\db3l\buildarea\3.x.bolen-windows7\build\lib\importlib\test\source\test_case_sensitivity.py, line 51, in test_insensitive self.assertTrue(hasattr(insensitive, 'load_module')) AssertionError: False is not true -- components: Library (Lib), Tests messages: 152102 nosy: brett.cannon, pitrou priority: normal severity: normal stage: needs patch status: open title: test_importlib failures under Windows type: behavior versions: Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13890 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13891] CPU DoS With Python's socket module
New submission from John Zimmerman johzi...@cisco.com: Python's socket module as included in Ubuntu Lucid (python version 2.6.5) does not correctly handle and exclude malformed UDP packets. This means that UDP listening programs written in python on this version are susceptible to malformed-UDP-packet based DoS attacks which cause severe CPU spikes in the python process. The spikes to recover once the attacks cease. If malformed UDP packets are properly identified in the library and excluded this will protect all UDP listening software written in python and using the standard sockets module from similar attacks. Currently all such software is vulnerable to such attacks. -- components: Library (Lib) messages: 152103 nosy: johzimme priority: normal severity: normal status: open title: CPU DoS With Python's socket module type: security versions: Python 2.6 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Jim Jewett jimjjew...@gmail.com added the comment: On Thu, Jan 26, 2012 at 8:19 PM, Antoine Pitrou rep...@bugs.python.org wrote: If I read your [Martin v. Löwis' ] patch correctly, collisions will produce additional allocations ... That's a pretty massive change in memory consumption for string dicts Not in practice. The point I first missed is that this triggers only when the hash is *fully* equal; if the hashes are merely equal after masking, then today's try-another-slot approach will still be used, even for strings. Per ( http://bugs.python.org/issue13703#msg151850 ) Marc-Andre Lemburg's measurements, full-hash equality explains only 1 in 10,000 collisions. From a performance standpoint, we can almost ignore a case that rare; it is almost certainly dwarfed by resizing. I *am* a bit concerned that the possible contents of a dictentry change; this could cause easily-missed-in-testing breakage for anything that treats table as an array. That said, it doesn't seem much worse than the search finger, and there seemed to be recent consensus that even promising an exact dict -- subclasses not allowed -- didn't mean that direct access was sanctioned. So it still seems safer than changing the de-facto iteration order. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13891] CPU DoS With Python's socket module
Antoine Pitrou pit...@free.fr added the comment: What do you call malformed UDP packets and how should they be detected by the library? -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13891] CPU DoS With Python's socket module
John Zimmerman johzi...@cisco.com added the comment: Thanks for your quick response, I downloaded the ISIC tool and used the following command to identify the problem: udpsic -s rand -d server-ip-address,port where port is 514 (syslogd) which uses a python script to process the incoming messages. The command 'netstat -lnup | grep 514' shows python as the bound application. Thanks, John -Original Message- From: Antoine Pitrou [mailto:rep...@bugs.python.org] Sent: Friday, January 27, 2012 12:47 PM To: John Zimmerman (johzimme) Subject: [issue13891] CPU DoS With Python's socket module Antoine Pitrou pit...@free.fr added the comment: What do you call malformed UDP packets and how should they be detected by the library? -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13891] CPU DoS With Python's socket module
Antoine Pitrou pit...@free.fr added the comment: But what does the ISIC tool report and why do you think it is a problem in Python's socket module? As far as I can read on its website, ISIC is a suite of utilities to exercise the stability of an IP Stack and its component stacks (TCP, UDP, ICMP et. al.). The IP stack, as well as the UDP and TCP implementations, is in the system's kernel, not in Python. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13891] CPU DoS With Python's socket module
John Zimmerman johzi...@cisco.com added the comment: Hi Antoine, The issue is that the CPU spikes to ~90% utilization for the server during the attack, for as long as the attack lasts. So the theory is that Python isn't throttling or processing the malformed packets properly. Copying Renier for any additional info. Thanks, John -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13891] CPU DoS With Python's socket module
Antoine Pitrou pit...@free.fr added the comment: The issue is that the CPU spikes to ~90% utilization for the server during the attack, for as long as the attack lasts. So the theory is that Python isn't throttling or processing the malformed packets properly. Copying Renier for any additional info. I don't know who Renier is, but Python is a programming language and doesn't integrate a throttling facility or ad-hoc protection against network attacks. Other programming languages will show exactly the same behaviour. The socket module gives access to the system's low-level socket operations, it is not a high-level network programming framework. Besides, truly malformed packets will never get processed by Python, they will be blocked by the kernel (e.g. because of a checksum failure). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13868] Add hyphen doc fix
Sandro Tosi sandro.t...@gmail.com added the comment: There are a lot more occurrences of 'floating point' in our doc: are you going to fix them too? -- nosy: +sandro.tosi ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13868 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13889] str(float) and round(float) issues with FPU precision
Mark Dickinson dicki...@gmail.com added the comment: Samuel, can you regenerate your patch? The contents don't look right---I see changes to pyport.h, but none to floatobject.c (and some other spurious-looking changes to the project file). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Martin v. Löwis mar...@v.loewis.de added the comment: I *am* a bit concerned that the possible contents of a dictentry change; this could cause easily-missed-in-testing breakage for anything that treats table as an array. This is indeed a concern: the new code needs to be exercised. I came up with a Py_REDUCE_HASH #define; if set, the dict will only use the lowest 3 bits of the hash, producing plenty collisions. In that mode, the branch currently doesn't work at all due to the remaining bugs. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13891] CPU DoS With Python's socket module
Charles-François Natali neolo...@free.fr added the comment: I don't want to be harsh, but this whole report just doesn't make sense You're getting 90% CPU usage simply because you're flooding your server. Closing. -- nosy: +neologix resolution: - invalid stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13891 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13868] Add hyphen doc fix
Changes by Mark Dickinson dicki...@gmail.com: -- nosy: +mark.dickinson ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13868 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1003195] segfault when running smtplib example
Charles-François Natali neolo...@free.fr added the comment: Could you please indicate exactly the command you're running, and provide the full backtrace? -- nosy: +neologix ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1003195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8536] Support new features of ZLIB 1.2.4
abhishek creativeabhishekg...@gmail.com added the comment: Check This out http://hg.python.org/cpython/file/b99c54acb22d/Modules/zlib/inflate.c http://hg.python.org/cpython/file/b99c54acb22d/Modules/zlib/zconf.h http://hg.python.org/cpython/file/b99c54acb22d/Modules/zlib/zconf.in.h All three files contain these functions -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8536 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13889] str(float) and round(float) issues with FPU precision
Mark Dickinson dicki...@gmail.com added the comment: I'm a bit disturbed that we're not using the _Py_SET_53BIT_PRECISION_* macros in _Py_double_round; unless I'm missing something, that seems like a major omission. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Antoine Pitrou pit...@free.fr added the comment: [Martin's approach] The point I first missed is that this triggers only when the hash is *fully* equal; if the hashes are merely equal after masking, then today's try-another-slot approach will still be used, even for strings. But then isn't it vulnerable to Frank's first attack as exposed in http://mail.python.org/pipermail/python-dev/2012-January/115726.html ? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13889] str(float) and round(float) issues with FPU precision
Changes by Mark Dickinson dicki...@gmail.com: -- type: - behavior versions: +Python 3.2, Python 3.3 -Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Changes by Patrick Hahn sko...@gmail.com: -- nosy: +skorgu ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Martin v. Löwis mar...@v.loewis.de added the comment: But then isn't it vulnerable to Frank's first attack as exposed in http://mail.python.org/pipermail/python-dev/2012-January/115726.html ? It would be, yes. That's sad. That could be fixed by indeed creating trees in all cases (i.e. moving away from open addressing altogether). The memory consumption does not worry me here; however, dictionary order will change in more cases. Compatibility could be restored by introducing a threshold for tree creation: if insertion visits more than N slots, go back to the original slot and put a tree there. I'd expect that N could be small, e.g. N==4. Lookup would then have to consider all AVL trees along the chain of visited slots, but ISTM it could also stop after visiting N slots. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13892] distutils handling of windows manifest isn't optimal
New submission from Jack Jansen jackjan...@users.sourceforge.net: I found a problem with the handling of manifest files in the msvc9compiler. Distutils removes the reference to the MSVC runtime from the manifest resource, to enable installing the runtime system locally (i.e. to allow non-admins to install Python in their own directory, without needing admin access to the winSxS directory). Embedders of Python are suggested to the manifest for the MSCV runtime to their main program (i.e. the program embedding Python). This is all a good idea, except for one use case: if you are including Python into a product that is itself a plugin to another product. And, of course, if you need to extend this Python with an extension module. In this case, you have no control over the manifest of the main program (which is the outer embedder). You have control over your own plugin (the one incorporating Python), but this intermediate manifest file is not taken into account when loading the distutils-generated .pyd file. (imagining the amount of time it took me before I got to this analysis is left as an exercise to the reader:-) I would suggest an option to distutils to skip the _remove_visual_c_ref() step. -- assignee: tarek components: Distutils messages: 152119 nosy: eric.araujo, jackjansen, tarek priority: normal severity: normal status: open title: distutils handling of windows manifest isn't optimal type: behavior versions: Python 2.7 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13892 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13889] str(float) and round(float) issues with FPU precision
Roundup Robot devn...@psf.upfronthosting.co.za added the comment: New changeset 5b884955 by Mark Dickinson in branch '3.2': Issue #13889: Add missing _Py_SET_53BIT_PRECISION_* calls around uses of dtoa.c functions in float round. http://hg.python.org/cpython/rev/5b884955 New changeset 265d35e8fe82 by Mark Dickinson in branch 'default': Merge 3.2 - default (issue 13889) http://hg.python.org/cpython/rev/265d35e8fe82 New changeset eaf553b063a7 by Mark Dickinson in branch '2.7': Issue #13889: Add missing _Py_SET_53BIT_PRECISION_* calls around uses of dtoa.c functions in float round. http://hg.python.org/cpython/rev/eaf553b063a7 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13890] test_importlib failures under Windows
Brett Cannon br...@python.org added the comment:
I was getting that error the other day on my OS X laptop, but then I thought I
tweaked the code well enough to solve it (since I am running on a
case-insensitive filesystem as well). It seems to stem from what nt.environ
contains when the test sets PYTHONCASEOK and importlib._bootstrap._case_ok()
tries to see if b'PYTHONCASEOK' is in nt.environ.
You (or anyone) have a Windows box to quickly test what nt.environ contains
after os.environ.set('PYTHONCASEOK', '1') is called?
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[issue13889] str(float) and round(float) issues with FPU precision
Mark Dickinson dicki...@gmail.com added the comment: but none to floatobject.c Bah, reading comprehension fail. Now that I look at your patch again, the floatobject.c changes are there (and pretty much match what I just committed). I assume that the changes to pythoncore.vcproj can be disregarded, though? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13889] str(float) and round(float) issues with FPU precision
Changes by Mark Dickinson dicki...@gmail.com: -- priority: high - normal ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13889 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13890] test_importlib failures under Windows
Brett Cannon br...@python.org added the comment: Otherwise it's the nt.listdir() comparison that's failing. Probably should check that is returning reasonable stuff as well. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13890 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10181] Problems with Py_buffer management in memoryobject.c (and elsewhere?)
Stefan Krah stefan-use...@bytereef.org added the comment: I've added some comments on Rietveld. This time, I pasted the email addresses manually into the CC field, apparently without success (I didn't receive mail). Regarding the use of _testbuffer in the docs: I agree that it's strange, on the other hand it illustrates several examples much better (length of a multi-dimensional view, result of cast to ND, etc). So I'm not sure what to do. Of course I'll take out the examples if you really don't like it. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10181 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Dave Malcolm dmalc...@redhat.com added the comment: On Fri, 2012-01-27 at 21:02 +, Martin v. Löwis wrote: Martin v. Löwis mar...@v.loewis.de added the comment: But then isn't it vulnerable to Frank's first attack as exposed in http://mail.python.org/pipermail/python-dev/2012-January/115726.html ? It would be, yes. That's sad. That could be fixed by indeed creating trees in all cases (i.e. moving away from open addressing altogether). The memory consumption does not worry me here; however, dictionary order will change in more cases. Compatibility could be restored by introducing a threshold for tree creation: if insertion visits more than N slots, go back to the original slot and put a tree there. I'd expect that N could be small, e.g. N==4. Lookup would then have to consider all AVL trees along the chain of visited slots, but ISTM it could also stop after visiting N slots. Perhaps we could combine my attack-detection code from http://bugs.python.org/issue13703#msg151714 with Martin's AVL approach? Use the ma_smalltable to track stats, and when a dict detects that it's under attack, *if* all the keys are AVL-compatible, it could transition to full-AVL mode. [I believe that my patch successfully handles both of Frank's attacks, but I don't have the test data - I'd be very grateful to receive a copy (securely)]. [See hybrid-approach-dmalcolm-2012-01-25-002.patch for the latest version of attack-detection; I'm working on a rewrite in which I restrict it to working just on pure-str dicts. With that idea, when a dict detects that it's under attack, *if* all the keys satisfy this condition (new_hash(keyA) == new_hash(keyB)) iff (hash(keyA) == hash(keyB)) then all hash values get recalculated using new_hash (which is randomized), which should offer protection in many common attack scenarios, without the semantic change Alex and Antoine indicated] -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13890] test_importlib failures under Windows
Antoine Pitrou pit...@free.fr added the comment: Well apparently nt.environ doesn't reflect os.environ: os.environ['PYTHONCASEOK'] = '1' nt.environ['PYTHONCASEOK'] Traceback (most recent call last): File stdin, line 1, in module KeyError: 'PYTHONCASEOK' nt.environ[b'PYTHONCASEOK'] Traceback (most recent call last): File stdin, line 1, in module KeyError: b'PYTHONCASEOK' os.environ['PYTHONCASEOK'] '1' os.environ[b'PYTHONCASEOK'] Traceback (most recent call last): File stdin, line 1, in module File C:\t\cpython\lib\os.py, line 450, in __getitem__ value = self._data[self.encodekey(key)] File C:\t\cpython\lib\os.py, line 508, in encodekey return encode(key).upper() File C:\t\cpython\lib\os.py, line 503, in check_str raise TypeError(str expected, not %s % type(value).__name__) TypeError: str expected, not bytes This is silly and is because of how the environ mapping is implemented in Lib/os.py: under POXIX, os.environ reflects posix.environ (it uses the same underlying dict), while under Windows, os.environ uses a distinct dict from nt.environ. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13890 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8536] Support new features of ZLIB 1.2.4
Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com added the comment: Modules/zlib directory contains only bundled copy of zlib-1.2.5. zlib Python module uses Modules/zlibmodule.c file. -- nosy: +Arfrever versions: +Python 3.3 -Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue8536 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13879] Argparse does not support subparser aliases in 2.7
Steven Bethard steven.beth...@gmail.com added the comment: This is a new feature, not a bug, so I think the correct fix is to change the 2.7 documentation, since at this point 2.7 can only get bugfixes, not new features. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13879 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13882] Add format argument for time.time(), time.clock(), ... to get a timestamp as a Decimal object
Changes by Arfrever Frehtes Taifersar Arahesis arfrever@gmail.com: -- nosy: +Arfrever ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13882 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13882] Add format argument for time.time(), time.clock(), ... to get a timestamp as a Decimal object
Alexander Belopolsky alexander.belopol...@gmail.com added the comment: Can we pick an API for this functionality that does not follow the worst of design anti-patterns? Constant arguments, varying return type, hidden import, and the list can go on. What is wrong with simply creating a new module, say hirestime with functions called decimal_time(), float_time(), datetime_time() and whatever else you would like. Let's keep the good old 'time' module simple. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13882 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13874] test_faulthandler: read_null test fails with current clang
Stefan Krah stefan-use...@bytereef.org added the comment: Yes, volatile works, too. That's probably the best solution. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13874 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13882] Add format argument for time.time(), time.clock(), ... to get a timestamp as a Decimal object
Antoine Pitrou pit...@free.fr added the comment: Well, creating a separate module is an anti-pattern in itself. calendar vs. time vs. datetime, anyone? I would instead propose separate functions: decimal_time, decimal_clock... or, if you prefer, time_decimal and so on. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13882 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13874] test_faulthandler: read_null test fails with current clang
Stefan Krah stefan-use...@bytereef.org added the comment:
Well, to be completely unambiguous. This works:
diff -r d2cf8a34ddf9 Modules/faulthandler.c
--- a/Modules/faulthandler.cThu Jan 26 00:15:07 2012 -0800
+++ b/Modules/faulthandler.cFri Jan 27 23:16:27 2012 +0100
@@ -943,7 +943,7 @@
static PyObject *
faulthandler_read_null(PyObject *self, PyObject *args)
{
-int *x = NULL, y;
+volatile int *x = NULL, y;
int release_gil = 0;
if (!PyArg_ParseTuple(args, |i:_read_null, release_gil))
--
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[issue13882] Add format argument for time.time(), time.clock(), ... to get a timestamp as a Decimal object
Alexander Belopolsky alexander.belopol...@gmail.com added the comment: On Fri, Jan 27, 2012 at 5:17 PM, Antoine Pitrou rep...@bugs.python.org wrote: Well, creating a separate module is an anti-pattern in itself. calendar vs. time vs. datetime, anyone? Are you serious? Since the invention of structural programming, creating a separate module for distinct functionality has been one of the most powerful design techniques. If I recall correctly, most of the original GoF patterns were about separating functionality into a separate module or a separate class. The calendar module is indeed a historical odd-ball, but what is wrong with time and datetime? -- nosy: +Alexander.Belopolsky ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13882 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13882] Add format argument for time.time(), time.clock(), ... to get a timestamp as a Decimal object
Antoine Pitrou pit...@free.fr added the comment: Are you serious? Since the invention of structural programming, creating a separate module for distinct functionality has been one of the most powerful design techniques. Yes, I'm serious, and I don't see what structural programming or design patterns have to do with it. And we're not even talking about distinct functionality, we're talking about the exact same functionality, except that the return type has slightly different implementation characteristics. Doing a module split is foolish. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13882 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13882] Add format argument for time.time(), time.clock(), ... to get a timestamp as a Decimal object
Changes by Alexander Belopolsky alexander.belopol...@gmail.com: -- nosy: +mark.dickinson ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13882 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13836] Define key failed
Terry J. Reedy tjre...@udel.edu added the comment: We are aware that key-binding deletion is not working correctly. I am pretty sure this report has the same underlying issue as #4765. -- nosy: +serwy, terry.reedy resolution: - duplicate status: open - closed superseder: - IDLE fails to Delete Custom Key Set properly ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13836 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4765] IDLE fails to Delete Custom Key Set properly
Terry J. Reedy tjre...@udel.edu added the comment: #13836 is another report of key-binding deletion not working correctly, although IDLE did eventually open and allow re-deletion. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4765 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13839] -m pstats should combine all the profiles given as arguments
Changes by Terry J. Reedy tjre...@udel.edu: -- nosy: +georg.brandl stage: - test needed versions: -Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13839 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13841] multiprocessing should use sys.exit() where possible
Changes by Terry J. Reedy tjre...@udel.edu: -- stage: - test needed versions: -Python 3.2 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13841 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13893] Make CGIHTTPServer capable of redirects (and status other than 200)
New submission from Giovanni Funchal gafunc...@gmail.com: GIHTTPServer.py is a very handy module for quickly setting up a full HTTP server with CGI support. However, I noticed that it doesn't support responses other than 200 OK. So, for instance if the page wants to do a redirect (response 303), it just isn't supported. It's documented as so, but still I think this is a major drawback that can be easily overcome. I have attached a patch against 2.7. I'd be happy to port it to dev branch if help provided as I'm new to Python. Reviews/suggestions more than welcome. -- components: Library (Lib) files: CGIHTTPServer.patch keywords: patch messages: 152137 nosy: Giovanni.Funchal priority: normal severity: normal status: open title: Make CGIHTTPServer capable of redirects (and status other than 200) type: enhancement versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3, Python 3.4 Added file: http://bugs.python.org/file24342/CGIHTTPServer.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13893 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13882] Add format argument for time.time(), time.clock(), ... to get a timestamp as a Decimal object
Changes by Eric V. Smith e...@trueblade.com: -- nosy: +eric.smith ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13882 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13846] Add time.monotonic() function
Terry J. Reedy tjre...@udel.edu added the comment: Do we actually yet another function, or could this be covered by adding a parameter such as monotonic=False, perhaps to wallclock(). -- nosy: +terry.reedy stage: - patch review type: - enhancement ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13846 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13847] Catch time(), ftime(), localtime() and clock() errors
Changes by Terry J. Reedy tjre...@udel.edu: -- stage: - needs patch type: - enhancement ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13847 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13848] io.open() doesn't check for embedded NUL characters
Terry J. Reedy tjre...@udel.edu added the comment: See also #13849 -- nosy: +terry.reedy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13848 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13849] Add tests for NUL checking in certain strs
Terry J. Reedy tjre...@udel.edu added the comment: This is a bit related to #13848 files 2 seconds earlier. -- nosy: +terry.reedy ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13849 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13866] {urllib, urllib.parse}.urlencode should not use quote_plus
Changes by Terry J. Reedy tjre...@udel.edu: -- nosy: +orsenthil stage: - test needed type: - enhancement versions: -Python 2.7, Python 3.1, Python 3.2, Python 3.4 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13866 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13849] Add tests for NUL checking in certain strs
Antoine Pitrou pit...@free.fr added the comment: Well, adding tests is certainly useful to avoid regressions in CPython (not only PyPy or Jython). It seems to me that the only reasonable discussion is whether they should be committed to 2.7 and 3.2, or only the default branch. (I personally like adding tests to stable branches as well, since that avoids potential regressions in further bugfix releases) If we had had such tests from the beginning, 3.x wouldn't have regressed in that matter (see #13848). -- nosy: +pitrou versions: +Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13849 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13867] misleading comment in weakrefobject.h
Changes by Terry J. Reedy tjre...@udel.edu: -- components: +Library (Lib) -Documentation, Extension Modules nosy: +fdrake, pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13867 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13867] misleading comment in weakrefobject.h
Antoine Pitrou pit...@free.fr added the comment: Ha, good catch. The macro could be fixed, or the comment simply be dropped. -- versions: +Python 2.7, Python 3.2, Python 3.3 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13867 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13893] Make CGIHTTPServer capable of redirects (and status other than 200)
Changes by Antoine Pitrou pit...@free.fr: -- nosy: +orsenthil ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13893 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4966] Improving Lib Doc Sequence Types Section
Nick Coghlan ncogh...@gmail.com added the comment: Yeah, the basic layout of this entire section has been in place for a *long* time (http://docs.python.org/release/1.4/lib/node4.html#SECTION0031) Some aspects haven't really aged all that well, as people have made minimalist changes to document new features without necessarily stepping back to see if the overall structure still makes sense. However, rather than dumping one massive patch on python-checkins, I think it makes sense to try to tackle it by section (i.e. sequences + related changes for now, then look at mappings, sets, truth values, comparisons and numbers separately). One thing I do plan to do is a quick scan for places that reference into the sequence types section to see if they should be adjusted (e.g. see if there's some duplication in the language reference that could be reduced, or cross-references in the glossary to add or update) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4966 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1625] bz2.BZ2File doesn't support multiple streams
Jesús Cea Avión j...@jcea.es added the comment: I think this support should be backported to Python 2.7 and 3.2. Current code can't decompress files generated by pbzip2, fairly popular. I would consider that a bug, not a feature request. I am just recompressing a 77GB file because of this :-(. -- nosy: +jcea ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1625 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10181] Problems with Py_buffer management in memoryobject.c (and elsewhere?)
Nick Coghlan ncogh...@gmail.com added the comment: Radical suggestion: make it public as collections.simple_ndarray? (prefixing with simple_ to be explicit that this is not even *close* to being the all-singing, all-dancing NumPy.ndarray) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue10181 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13877] segfault when running smtplib example
Changes by Jesús Cea Avión j...@jcea.es: -- nosy: +jcea ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13877 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1003195] segfault when running smtplib example
Changes by Jesús Cea Avión j...@jcea.es: -- nosy: +jcea ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1003195 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13703] Hash collision security issue
Benjamin Peterson benja...@python.org added the comment: For the record, Barry and I agreed on what we'll be doing for stable releases [1]. David says he should have a patch soon. [1] http://mail.python.org/pipermail/python-dev/2012-January/115892.html -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13703 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue4765] IDLE fails to Delete Custom Key Set properly
Roger Serwy roger.se...@gmail.com added the comment: I am unable to reproduce this bug with the latest development versions in the 2.7 and 3.3 branches. Can someone verify this as well? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue4765 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue13874] test_faulthandler: read_null test fails with current clang
Jesús Cea Avión j...@jcea.es added the comment: That makes x and y volatile. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue13874 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
