[Python-bugs-list] [ python-Bugs-626172 ] crash using unicode latin1 single char

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Bugs item #626172, was opened at 2002-10-20 22:52
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=626172&group_id=5470

Category: Unicode
Group: Python 2.2.2
Status: Open
Resolution: None
Priority: 6
Submitted By: Neal Norwitz (nnorwitz)
Assigned to: M.-A. Lemburg (lemburg)
Summary: crash using unicode latin1 single char

Initial Comment:
The following code will crash python (also attached as
file):

try:
    for c in u'\xe2':
        c in 'g\xe2teau'
except UnicodeError:
    pass

The problem appears to be a double free.  Ref count
goes negative in a debug build.
The problem is with the unicode_latin1 module variable.
 If I comment out the line 

  unicode_latin1[*u] = unicode; 

in unicodeobject.c (~316 in CVS).  Everything is fine.
 That obviously is not correct.  I added another INCREF:

  Py_INCREF(unicode_latin1[*u]);

That also fixed the crash.  I'm not sure if the INCREF
is the correct solution.

This bug appeared on usenet: 
http://mail.python.org/pipermail/python-list/2002-October/127682.html


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