[Python-Dev] 2.4 & 2.5 beta 3 crash

[Dino Viehland]

Yeah, continue inside the finally block is illegal.  If you don't have the extra try/except nesting then continue is detected as a syntax error.

-----Original Message-----
From: Dennis Allison [mailto:allison at shasta.stanford.edu]
Sent: Wednesday, August 16, 2006 10:22 AM
To: Josiah Carlson
Cc: Dino Viehland; python-dev at python.org
Subject: Re: [Python-Dev] 2.4 & 2.5 beta 3 crash


def test():
  for abc in range(10):
      try: pass
      finally:
          try:
              pass
          except:
              pass

test()

does not raise a segmentation fault.

On Wed, 16 Aug 2006, Josiah Carlson wrote:

>
> Dino Viehland <dinov at exchange.microsoft.com> wrote:
> >
> > We've been working on fixing some exception handling bugs in
> > IronPython where we differ from CPython.  Along the way we ran into
> > this issue which causes CPython to crash when the code below is run.
> > It crashes on both 2.4 and 2.5 beta 3.  The code's technically
> > illegal, but it probably shouldn't crash either :)
>
> > def test():
> >     for abc in range(10):
> >         try: pass
> >         finally:
> >             try:
> >                 continue
> >             except:
> >                 pass
> >
> >
> > test()
>
> It also reliably crashes 2.3, though I don't see anything in there as
> being illegal, but maybe I don't understand the langauge as well as I
> think I do.
>
> Note that there is another segfaulting bug in CPython with regards to
> threads that was recently closed, but which is still a problem:
> http://python.org/sf/780714
>
> Does IronPython survive in that case?
>
>
>  - Josiah
>
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