Bugs item #1557232, was opened at 2006-09-12 08:28
Message generated for change (Comment added) made by nnorwitz
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Category: Parser/Compiler
Group: Python 2.5
Status: Open
Resolution: None
Priority: 7
Submitted By: Martin v. Löwis (loewis)
Assigned to: Nobody/Anonymous (nobody)
Summary: Parser crash

Initial Comment:
The code

def x(((y))):pass 

crashes the compiler (?) in 2.5c2, on Windows.

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>Comment By: Neal Norwitz (nnorwitz)
Date: 2006-09-12 22:50

Message:
Logged In: YES 
user_id=33168

The problem is in Python/ast.c around line 666.  See the
comment:

/* def foo((x)): setup for checking NAME below. */

The code is not sufficient, we need a loop and need to
handle various combinations of:

def f(((((x))),)),))): pass

I don't know if the parens above match, but the general idea
is that there could be a bunch of parens and commas at
various places.  I'm not sure how the above should be
interpreted.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1557232&group_id=5470
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