[avr-gcc-list] Comma Operator in #define

[Keith Gudger]

Maybe I'm missing something, but I *did* check the ANSI C manual, and this
should be OK, I think.

I want to use a comma operator in a macro (#define) statement:

#define set_clock(x) asm volatile("nop\n\t"::), (PORTB |= BIT3)

avr-gcc gives the following error when I use this macro:

  set_clock();

error: parse error before ',' token

If I just make it a ';', then everything works OK.

Any ideas?  What am I doing wrong?  Or is this a bug?

Keith