Re: [avr-gcc-list] Avr-gcc Produces Incorrect Code with -Os

[Alex Wenger]

Hi,

if i read:

> The code fragment,
>
>   ...
>   dtostrf(cos_rad,6,3,&line4[14]);
>   line3[20] = ' ';
>   line4[20] = ' ';
>   TRACE_ON(TRACE4);  // portb |= _bv(04)
>   atan_rad = atan2(cos_rad,sin_rad);  
>   TRACE_OFF(TRACE4);  // portb &= ~_bv(04)
>   dtostrf(atan_rad,6,3,&line4[26]); 

"portb" it looks like you don´t use the original
avr includes, otherwise it should be "PORTB".

Maybe you don´t declare portb as volatile?

Why someone does not use the standard include?

Alex