Re: [avr-gcc-list] Got strange compilation problem

[Bjarne Laursen]

David Bourgeois wrote:

> uint8_t fifoLength(fifo_t *p)
> {
>     uint8_t length;
>
>     length = (p->inIdx) - (p->outIdx);
>     length %= FIFO_SIZE;
>       return length;
> }

You are casting the result of the subtraction to uint8_t before doing 
the modulos.
If you write it in one statement it will be the same as the operants or 
at least int.
This could be the difference.

-Bjarne Laursen, RoseTechnology A/S