Re: how to freeze 2.1.125, finally

Ragnar Hojland (ragnar@redestb.es)
Sun, 11 Oct 1998 08:54:53 +0100 (MET)


On Sat, 10 Oct 1998, Bernhard Rosenkraenzer wrote:
> On Sat, 10 Oct 1998, Ragnar Hojland wrote:

> > Well, some days ago I posted about a frozen 2.1.124. So I tried everything
> > back and forth trying to reproduce the lockup. Ended up playing with crashme
> > If you compile crashme with egcs 1.1b, with -O6 -g, and run it (obviously
> > as non root), with +2000.0 7191 2 , it locks up. Why the -O6 makes a
> > difference, I have no idea.. anyone mind illustrating me?
>
> egcs has a few bugs that can lead to miscompilation with optimizations > -O2
>
> Use -O2 rather than -O6; shouldn't be much slower, but more reliable.

But, what exactly does it optimize in this case? I tried copying the data
dump from crashme and executing it in a simple program, and it didnt lock
up.. so the only thing I can think of is some kind of signal problem? And
why does it freeze when run as a non privileged user?

-- 
____/|  Ragnar Hojland  (ragnar@lightside.ddns.org)      Fingerprint  94C4B
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 =(_)=  "Thou shalt not follow the NULL pointer for      104B78C56 B72F0822
   U     chaos and madness await thee at its end."       hkp://keys.pgp.com

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