Bugs item #856623, was opened at 2003-12-08 19:15
Message generated for change (Comment added) made by nnorwitz
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Category: None
Group: None
>Status: Closed
Resolution: Works For Me
Priority: 5
Submitted By: Tim McLennan (timmcl)
Assigned to: Neal Norwitz (nnorwitz)
Summary: Erroneous code objects created with PyCode_New
Initial Comment:
If you copy a code object by calling say new.code with
just the members of an existing code object with
free/cell variables - such as the following nested example:
def null():
return None
def wrapfunc(func):
def _inner(*args):
return func(*args)
return _inner
wrapped = wrapfunc(null)
code_object = wrapped.func_code
new_code_object = new.code(< code_object >)
then the new_code_object will not have had its
free/cell vars removed and will thus not disassemble
correctly. Furthermore
if you create a function out of it, then calling the
function will raise -
SystemError:
R:Python23srcPython-2.3.2Objectscellobject.c:
22: bad argument to internal function
Looking at the code in PyCode_New I can't see why this
should happen.
(Bug noticed on Python 2.3.2 on windows)
----------------------------------------------------------------------
>Comment By: Neal Norwitz (nnorwitz)
Date: 2005-12-18 19:45
Message:
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Assuming this is fixed.
----------------------------------------------------------------------
Comment By: Neal Norwitz (nnorwitz)
Date: 2005-10-01 23:59
Message:
Logged In: YES
user_id=33168
I don't think this is still a bug any longer.
new.function() seems to require closure be passed in if the
function has cell variables.
When I disassemble new_code_object, I get the same as the
original.
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