As Jan Waclawek wrote:

> Just want to remark that these issues had been discussed already in
> the thread stemming from
> http://lists.nongnu.org/archive/html/avr-libc-dev/2011-09/msg00025.html
> ...

And the outcome was that the macro solution is not really suitable
as a replacement.  To quote Johann:

> prog_char as a macro is dreaded.

> const prog_char * const p = NULL;

> puts p in progmem so it's broken by design. With that users will be
> taken for a ride.

I agree that having typedefs for the named address space
implementation might be a good thing.  They should probably start
with flash_ (rather than prog_) then, to clearly indicate they are
*different*, and need a different usage.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

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