Patch for PR target/31733 (in cfgrtl.c)

[Steve Ellcey]

> > I haven't a clue.  I tried to follow what was going on in the code and
> > wasn't able to do it.  Since the problem doesn't happen any more with
> > ToT I am inclined to think we should just close the PR as
> > unreproducable.
> 
> That seems reasonable.  The testcase, if any, should be installed though.
> 
> -- 
> Eric Botcazou

Eric,

I looked at the test case.  Preproccessed, it is a 50000 line C++
program.  I don't think it is a good candidate for the testsuite.
I could try cutting it down more but that seems like a lot of work for
what may have just been a temporary bug.  What do you think?

Steve Ellcey
sje@cup.hp.com