Fwd: Re: [En-Nut-Discussion] PPP/AHDLC logic problems...
chaac at nic.fi
Mon May 9 10:26:39 CEST 2005
Brett Abbott wrote:
> maybe gcc, maybe not, maybe both gcc and ICC?
> I have seen exact symptom this with ICCAVR V6 with optimisation
> recently. Perhaps it is something uncommon within the NutOS code stream
> - we are both working on ahdlcavr.c and related code.
> Is this the problem that goes away when the optimiser is off?
I was able to trace it back to it's origin... The GCC and its optimizations.
Current workaround is to use -fno-delete-null-pointer-checks as compiler
arguments to disable this aggressive optimization.
For me this seems to fix all current problems with PPP connections. Of
course there still is some design issues that I do not agree :), but
that is another story.
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