[avr-gcc-list] PSTR macro bug in C++

[Iztok Zupet]

Hello

 Just today I discovered a bug. Using the printf_P function and PSTR
macro causes:

*App.cpp: In member function `void App::dmxScreen()': 
*App.cpp:47: internal compiler error: in simplify_gen_subreg, at
simplify-rtx.c:3444 
*Please submit a full bug report, 

I use avr-gcc V 3.4.1 and avr-libc V 1.0.4.

However, defining PSTR(s) macro as
#define PSTR(s) ({static char __c[] PROGMEM = (s); &__c[0];})
instead of
#define ({static char __c[] PROGMEM = (s); __c;})
solves this problem.

Regards
Iztok