gistfile1.txt

matthijs@grubby:~$ avr-gcc -x c -c foo.cpp                                                                                                                     
matthijs@grubby:~$ avr-gcc -c foo.cpp                                                                                                                          
foo.cpp:1:7: error: ‘__flash’ does not name a type
 const __flash int array[] = { 3, 5, 7, 11, 13, 17, 19 };
       ^
matthijs@grubby:~$ cat foo.cpp 
const __flash int array[] = { 3, 5, 7, 11, 13, 17, 19 };