Stephan R.A. Deibel added the comment:
I think I misunderstood the implementation of EnterNonRecursiveMutex -- the
mutex that could block there is the internal 'cs' mutex, which would only be
held only briefly while Enter/LeaveNonRecursiveMutex are running, and it looks
like the 'cs' mutex
New submission from Stephan R.A. Deibel:
In acquire_timed in _threadmodule.c (used to implement threading lock
acquire()) there is an optimization from
https://github.com/python/cpython/commit/e75ff35af2b6c85d48c68b95f295aeac7396b162
that says it first tries non-blocking lock w/o releasing
New submission from Stephan R.A. Deibel:
The changes made in Issue19788 break the ability to build x64 build target on a
32-bit Windows machine because PreBuildEvent entries in pythoncore.vcxproj end
up trying to run the 64-bit kill_python.exe, causing critical build steps to
fail. Removing
Stephan R.A. Deibel added the comment:
There's no patch attached... or am I just confused?
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue20609
Stephan R.A. Deibel added the comment:
Yes, thanks, that patch fixes it so it builds successfully. Tried w/ Python
3.4rc1 on Windows 7 w/ VS2010.
Of course maybe it should really be building kill_python.exe for the matching
architecture and running that, but I'm not sure how to do
Stephan R.A. Deibel added the comment:
OK, sounds reasonable to me.
--
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue20609
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Python-bugs
Stephan R.A. Deibel sdei...@wingware.com added the comment:
Here's a patch to the docs that notes the issue and refers the reader to the
relevant execution model docs page. I have also attempted to clarify the
interaction with dynamic features section of the execution model page
Stephan R.A. Deibel sdei...@wingware.com added the comment:
Ah, thanks, there it is... I thought this must be dealt with somewhere but
couldn't find it. Maybe should add something to the 'exec' statement docs
http://docs.python.org/py3k/library/functions.html#exec to reference this (from
New submission from Stephan R.A. Deibel sdei...@wingware.com:
Calling exec() on code that includes a list comprehension that references a
defined local variable x fails incorrectly on NameError: global name 'x' not
defined.
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files: execlistcomp.py
messages: 149050
nosy: sdeibel
New submission from Stephan R.A. Deibel sdei...@wingware.com:
The tracer set with sys.settrace() is called incorrectly with a 'line' event on
a 'pass' that is at the end of an 'else' clause on the final line of a function
even if the else block is not executed by the interpreter. Whew, talk
Stephan R.A. Deibel sdei...@wingware.com added the comment:
Sorry, the print statement in the file needs a tweak to work with Python 3.2,
but the bug does occur there also.
--
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Python tracker rep...@bugs.python.org
http://bugs.python.org
Stephan R.A. Deibel sdei...@wingware.com added the comment:
Here is a patch against Python 2.6.1 that restores errno after the
sanity check in lock_PyThread_release_lock in Modules/threadmodule.c.
A potential controversy is whether it should be done here or in
thread_pthread.h but I believe
Stephan R.A. Deibel sdei...@wingware.com added the comment:
If you are at PyCon 2009 sprints, try to see if you can find John
Ehresman in the Python Core sprint to see it happen at line 115 of
threadops.c in the Wing 3.2 source base. If you're not there or can't
find him, I'll try to make
Stephan R.A. Deibel sdei...@wingware.com added the comment:
It appears to be specific to 2.x and does not occur under Python 3.0:
Python 3.0 (r30:67503, Jan 15 2009, 09:27:16)
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
Type help, copyright, credits or license for more information.
import
New submission from Stephan R.A. Deibel:
The algorithm in code_hash() in codeobject.c can return the same hash
value for different code objects.
Presumably distinct code objects should be very unlikely to have the
same hash value. This bug affected our debugger before we worked around
Stephan R.A. Deibel added the comment:
I should have noted that adding co_firstlineno as well to the hash would
be necessary to distinguish like code objects within the same file. The
example has them on the same lines in different files but changing the
first line of the defs doesn't matter
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