[Gambas-user] ARM debugging - where to start?

[Joe Michael]

On Tue, 2011-09-06 at 13:12 +0200, Benoît Minisini wrote:

> > Hi,
> > 
> > I have an ARM based Genesi Smarttop unit which runs Ubuntu 10.10 and it
> > has Gambas version 2. When Gambas starts up gbx2 runs, consumes all
> > resources
> > in a big loop. If I start with it in command line, I get no output -
> > zip. No clues what
> > could be going on. I left a message in their forum
> > http://www.powerdeveloper.org/forums/viewtopic.php?t=2042
> > but no response for some weeks now.
> > 
> > So it looks like I have an excuse to go from being a big fan of Gambas
> > to an even
> > bigger fan and help debug  :-)
> > 
> > Bearing in mind this is ARM platform, and I don't know first thing about
> > gamabas
> > development, what is the first things I should do?
> > Please be explicit with syntax for use of commands and parameters to be
> > sent
> > to get some debug messages and results, as I won't be able to
> > second guess what is being suggested.
> > 
> > I am familiar with C (skill rating 9/10), C++ (4/10), using gambas
> > (8/10).
> > 
> > 
> > Thanks.
> > 
> > JM
> > 
> 
> Gambas 2 already runs some project on ARM, but two ARM computers are well-
> known to be very different!
> 
> Go to the directory of the Gambas 2 project you want to run, and use the 
> debugger. Hit CTRL+C to stop it when it loops, and send me the backtrace.
> 
> $ cd /path/to/my/gambas/project
> $ gdb gbx2
> ...
> (gdb) run
> ...
> ^C
> (gdb) bt
> ...
> 
> Please try to compile the latest version of gambas, and with debugging 
> information enabled. Try to compile with and without optimization too, to see 
> if something changes.
> 
> Regards,
> 


Results of running gdb: 
----------------------- 

~/code/gambas/app1$ gdb gbx2 
GNU gdb (GDB) 7.2-ubuntu 
Copyright (C) 2010 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 "arm-linux-gnueabi". 
For bug reporting instructions, please see: 
<http://www.gnu.org/software/gdb/bugs/>... 
Reading symbols from /usr/bin/gbx2...(no debugging symbols
found)...done. 
(gdb) run 
Starting program: /usr/bin/gbx2 
[Thread debugging using libthread_db enabled] 
^C 
Program received signal SIGINT, Interrupt. 
0x0001850a in ?? () 
(gdb) bt 
#0 0x0001850a in ?? () 
#1 0x0001ee68 in ?? () 
Backtrace stopped: previous frame identical to this frame (corrupt
stack?) 
(gdb)

[Will also try compiling gb3 as suggested over next few days to see if
it
adds any new information, and post results. Thnx.]
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