Re: gcc-4 troubleshooting

[Greg Darke <starstuff () optusnet com au>]

Hi List,

It seems that the crashes are caused by compiling Nmap with
optimizations.

I have narrowed it down to one of the optimizations that are enabled
with O2, but not with O1. I will try to narrow it down to a specific
optimization (or combination of optimizations) over the next few days.
Does anybody know of any problematic optimizations that I should look at
first?

In case other people are looking into this problem, I am doing my
testing with gcc version: "gcc (GCC) 4.0.1 20050727 (Red Hat 4.0.1-5)".

Greg Darke.

On Fri, 2005-08-26 at 12:18 -0700, Fyodor wrote:
> Most of the reports I have heard have been using Fedora Core 4, though
> it may happen on the most recent SuSe release too.  Nmap compiles, but
> crashes for unclear reasons.  See:
>
> http://seclists.org/lists/nmap-dev/2005/Jul-Sep/0049.html
>
> The error is "Failed to determine the netmask of ! : No such device"
>
> There is more in that mail thread.  It works fine on my Fedora Core 3
> boxes, but I haven't had a chance to install FC4 yet.
>
> Cheers,
> -F



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