[avr-gcc-list] E: When does the Stack Frame Pointer (Y) get setup?

[Don Kinzer]

>void id_filter_init8( void ) __attribute__ ((naked)) 
>__attribute__((section(".init8")));
I suspect that the "naked" attribute is causing the omission of the
stack frame setup.  You'll probably have to create a "static inline"
function (without the naked attribute) to call from id_filter_init8()
- the compiler should then produce the code you're expecting.

Don Kinzer