Small problem in cse

[Jeffrey A Law]

  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