Re: [avr-gcc-list] Debug with AVRStudio4?

[Torleif Sandnes]

Wolfgang Wegner wrote:
> Hi,
> On 7 Sep 2005 at 12:36, Torleif Sandnes wrote:
>
> > Your problem may be that you are compiling with optimization on.
> > Try to use -O0 instead of -Os, -O1 or whatever you are using.
> > You could also just remove the -O flag altogether.
>
> the problem is that I can not remove the -O, because the code gets 
> too big then. I have to use at least -O1.
>
> I do not know if it is really the optimization - it was sometimes 
> difficult to find the exact location and such with IAR-compiled code, 
> but it worked - now I end up in the completely wrong function (some 
> 100 lines away), so I assume it is not only optimization but a 
> somewhat more basic problem.
>
> Is there anything special concerning preprocessing etc. I might have 
> a look at?

There is a limitation in avr-gcc's dwarf output at 64K sourcelines.
If you go beyond this number of sourcelines, source-level debugging breaks.

Is your problem still there if you use the simulator in AVR Studio?

Torleif