[Mageia-dev] net_applet segfaulting

Shlomi Fish shlomif at shlomifish.org
Sun Jul 1 17:15:36 CEST 2012


On Sun, 01 Jul 2012 14:55:25 +0200
Robert Fox <list at foxconsult.net> wrote:

> On Tue, 2012-06-19 at 19:46 +0200, Thierry Vignaud wrote:
> > On 19 June 2012 16:01, Robert Fox <list at foxconsult.net> wrote:
> > > So for some unexplained reason it segfaults and I have to start it
> > > again.
> > 
> > Please:
> > 1) install perl-debug glibc-debug perl-Glib-debug perl-Gtk2-debug
> > gtk2.0-debug gdb
> > 2) run "gdb perl /usr/bin/net_applet"
> > 3) type "run" to start it from the debuger
> > 4) type "bt" to get a backstrace once it segfaulted
> > 5) paste the backtrace in a text file you'll _attach_ to a bug report
> 
> Finally got around to trying this - here is the output so far:
> 
> [rfox at ThinkFox ~]$ gdb perl /usr/bin/net_applet
> GNU gdb (GDB) 7.3.50.20110722-4.mga2 (Mageia release 2)
> Copyright (C) 2011 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
> <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show
> copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-mageia-linux-gnu".
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>...
> Reading symbols from /usr/bin/perl...Reading symbols
> from /usr/lib/debug/usr/bin/perl5.16.0.debug...done.
> done.
> "/usr/bin/net_applet" is not a core dump: File format not recognized
> (gdb) run
> Starting program: /usr/bin/perl 
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib64/libthread_db.so.1".
> 
> and it just sits there - program doesn't start.
> 
> Didn't get very far . . .
> 

That's the wrong way to invoke gdb. You need:

$ gdb /usr/bin/perl

And in the gdb prompt:

$ r /usr/bin/net_applet

You can also use a --command start-up flag for that.

Regards,

	Shlomi Fish


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