[ python-Bugs-1257960 ] gen_send_ex: Assertion `f->f_back != ((void *)0)' failed.

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Bugs item #1257960, was opened at 2005-08-12 14:20
Message generated for change (Comment added) made by rhettinger
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Category: Python Interpreter Core
>Group: Python 2.5
Status: Open
Resolution: None
Priority: 8
Submitted By: Neil Schemenauer (nascheme)
>Assigned to: Phillip J. Eby (pje)
Summary: gen_send_ex: Assertion `f->f_back != ((void *)0)' failed.

Initial Comment:
Triggering is trival.  Create a script that contains:

    def f():
        yield 1
    g = f()

Run with a debug version of Python:

python: ../Objects/genobject.c:85: gen_send_ex:
Assertion `f->f_back != ((void *)0)' failed.
Aborted (core dumped)


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>Comment By: Raymond Hettinger (rhettinger)
Date: 2005-08-12 19:09

Message:
Logged In: YES 
user_id=80475

I believe this is related to IDLE crash that I've been seeing.
The problem did not occur just before the checkin:
    cvs up -D "2005-08-01 18:00"
But emerged immediately after:
    cvs up -D "2005-08-01 21:00"

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1257960&group_id=5470