Re: Examining core dump with gdb

[Mouse <mouse%Rodents-Montreal.ORG@localhost>]

>> When I try with unzipped core dump:
>> /var/crash#gdb
>> (gdb) target kvm netbsd.10.core
>> [1]   Abort trap (core dumped) gdb
>> /var/crash#

> That should not die like this :-(

Indeed.  I'm reminded of something I saw years ago in the gcc docs,
saying that if the compiler gets a fatal signal for any input
whatsoever, that is a bug.  Similar remarks apply - or at least IMO
should - to debuggers.

> But the problem is that you did not supply a kernel executable. For
> best results you want a kernel with symbols (netbsd.gdb) but a
> regular kernel will work:

> /var/crash#gdb netbsd
> (gdb) target kvm netbsd.10.core

One caution here: on some versions, under circumstances I have not put
in the effort to fully understand, I've had savecore write a
zero-length file for the kernel.  You might have to use /netbsd (or
wherever you keep your kernel) instead.

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