[Python-Dev] current problems that should be fixed before release (2.6) (original) (raw)
Neal Norwitz nnorwitz at gmail.com
Sun Aug 24 07:12:49 CEST 2008
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Below are the problems I found that have not been fixed at r65995 on trunk (2.6). There will be a separate mail for the 3.0 problems.
I've done the following:
- built in debug and opt mode (gcc 4.1.2) fixing the important warnings
- run all the tests in both modes
- run all the tests (except test_logging and test_ssl) under valgrind 3.3.1 fixing the problems
- run failmalloc (1.0) on startup for the first 4000 allocations fixing most problems
- run pychecker 0.8.18 over the stdlib (Lib/.py, Lib/[bcdelhjmswx]/*.py)
Can someone run purify on windows over 2.6? Can someone (else) compare performance of 2.5, 2.6, and 3.0?
pychecker reported problems: Lib/gzip.py:114: Using property (filename) in classic class GzipFile may not work Lib/io.py:1394: No module attribute (device_encoding) found - device_encoding access is protected, but I don't see where it can be set Lib/sched.py:122: Using property (queue) in classic class scheduler may not work Lib/tempfile.py:535: Using property (closed) in classic class SpooledTemporaryFile may not work Lib/tempfile.py:539: Using property (encoding) in classic class SpooledTemporaryFile may not work Lib/tempfile.py:553: Using property (mode) in classic class SpooledTemporaryFile may not work Lib/tempfile.py:557: Using property (name) in classic class SpooledTemporaryFile may not work Lib/tempfile.py:561: Using property (newlines) in classic class SpooledTemporaryFile may not work Lib/tempfile.py:580: Using property (softspace) in classic class SpooledTemporaryFile may not work Lib/multiprocessing/connection.py:95: No global (PipeListener) found Lib/multiprocessing/connection.py:132: No global (PipeClient) found - both of the Pipe classes are defined only for windows. I don't see a similar def for Unix. Lib/multiprocessing/connection.py:378: No global (AuthenticationError) found
I haven't looked into the property complaint to see how bad it is.
test_bsddb3 is failing on several 2.6 buildbots. test_bsddb3 leaks 80 references.
Results of valgrind 3.3.1 on Ubuntu 6.10 amd64, gcc 4.1.2 (prerelease):
Uninitialized memory reads: No problems in python code. Though it's possible there are errors in ctypes. I'm ignoring those reports due to a problem in dlopen.
Wild memory writes: No problems in python code.
Memory leaks: No major problems. However, it seems that there are a bunch of little leaks when forking a process. I haven't determined if these are real problems or not.
There is one memory leak in ctypes (sorry no real useful information): 44 bytes in 1 blocks are definitely lost in loss record 43 of 191 malloc (vg_replace_malloc.c:207) resize (callproc.c:1733)
It seems to always leak 44 bytes
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