Re: [avr-gcc-list] RE: Program Space String & optimization

[bolet (sent by Nabble.com)]

>In any case, changing the declaration of 'a' to something like 
>
>  unsigned char volatile a; 
>
>should do it.  Removing 'a' entirely should fix it as well, but I'm assuming 
>you're using it for other reasons. 

 Thanks for your answer, the 'a' is only used for debugging purposes.
 I first tried the 'do-while' loop whithout the 'a' with the same result.
 
 The answer given by Joerg Wunsch works OK, I was using the volatile qualifier
incorrectly:

>Your volatile qualifier is at the wrong place.  You're marking the 
>object "txt" points to as volatile, not the pointer itself.  Change 
>that into 
> 
>PGM_P volatile txt = P_Txt; 
> 
>and it will work. 

  Thank you

   Bolet

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Re: RE: Program Space String & optimization