RE: [avr-gcc-list] Gcc bug??

[Larry Barello]

This is not a GCC bug.  Brian is using AvrX which uses the "naked" attribute
for all AvrX code objects.  Naked functions do not initialize the frame
pointer.  The right solution is to change "naked" to "noreturn" which is
slightly less efficient, but *does* initialize the frame pointer.

Brian already knows this (or at least his inbox does)...

-----Original Message-----
From:  Brian Cuthie
Sent: Wednesday, March 10, 2004 7:31 AM
To: address@hidden
Subject: [avr-gcc-list] Gcc bug??



I've got an interrupt handler that contains a switch statement. With -O
optimization, it seems to work fine. Without any optimization (no -O) the
whole machine crashes within seconds.  Looking at the code generated by the
compiler, I'm puzzled over how the unoptimized version could ever work.

Here's the beginning of the optimized version of the interrupt handler (this
is unlinked, so absolute addresses are null):
...


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