Re: [avr-gcc-list] Options on avr-gcc

[Christopher X. Candreva]

On Mon, 12 Feb 2007, Javier Almansa Sobrino wrote:

> uint16_t n;
> for (n = 0; n < 1000; n++); /* Delay loop */
>  --- rest of code --
> 
> originally, this piece of code generates a delay loop, but I've changed
> the AVR-GCC options on my Makefile and now, if I want the delay loop
> works correctly, I must declare n as volatile. 

Most likely any optimization at all will remove the loop. Having n volatile 
is probably preferable to running unoptimized code.


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