"Bob Paddock" <[EMAIL PROTECTED]> wrote: > Is it valid to paste structure tokens with > the preprocessor ## operator?
That's not the purpose of that operator. It's rather intended to allow forming completely new identifiers out of fragments, as in: #define HD44780_PORT A #define GLUE(a, b) a##b #define PORT(x) GLUE(PORT, x) #define PIN(x) GLUE(PIN, x) #define DDR(x) GLUE(DDR, x) #define HD44780_PORTOUT PORT(HD44780_PORT) #define HD44780_PORTIN PIN(HD44780_PORT) #define HD44780_DDR DDR(HD44780_PORT) .... HD44780_DDR = 0x0f; HD44780_PORTOUT = 42; x = HD44780_PORTIN; For a structure, you've already got two separated identifiers anyway. I've got the impression that everything's most likely much simpler than you try to make it. However, I've got a hard time following your examples, which is partially caused by your mailer wrapping up long lines so they become unreadable. Can you write a complete example that is compilable (well, modulo the error, of course)? Either use a mailer that doesn't wrap lines, or wrap them using \<newline> when inside a macro. Alternatively, file it as an attachment. -- cheers, J"org .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
