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Re: Small problem in cse
- To: chris at lslsun dot epfl dot ch (Christian Iseli)
- Subject: Re: Small problem in cse
- From: Jeffrey A Law <law at cygnus dot com>
- Date: Mon, 20 Oct 1997 10:45:06 -0600
- cc: egcs at cygnus dot com
- Reply-To: law at cygnus dot com
In message <199710200842.KAA16565@lslsun17.epfl.ch>you write:
> > In message <199710172043.WAA24596@Rivendell.MiddleEarth.net>you write:
> > > I've received a segfault from cc1 due to a NULL dereference in cse.c.
> > > The following trivial patch cures the problem.
> > Yes, but _why_ is classp NULL?
>
> classp is not NULL, but classp->first_same_value is NULL, and later
> dereferenced. I don't *know* why that field is NULL, I just assumed
> that no same value had been seen yet...
Sorry, I meant to say why is classp->first_same_value NULL?
>From my review of the code I don't see that classp->first_same_value should
ever be NULL -- thus I suspect something has gone wrong elsewhere that
needs to be investigated.
But I could be wrong, since you've got a target & testcase which triggers
this problem you'll need to do some of the analysis.
Thanks,
jeff