Re: [Boost-users] supressing "extra ;" warnings with GCC 3.4

Bronek Kozicki writes:

Dave Steffen wrote:

...

#define FOO(T) \

#define FOO do{/* here goes your macro */} while(0)

Yes, I've seen this in the GCC documentation. Unfortunately, it doesn't help if you're doing the sort of preprocessor metaprogramming we're doing. In one case in particular, the end result of the macro really is supposed to be a _function declaration_, not a section of code. In another case, it shows up from the construct #define NUM_SIG_CONNECTION_FUNCTIONS_FOR_MEMBERS(first,last) \ BOOST_PP_REPEAT_FROM_TO(BOOST_PP_ADD(first,1),BOOST_PP_ADD(last,2),\ NUM_SIG_DECLARE_CONNECT,BOOST_PP_EMPTY) I don't claim to understand everything that's going on here (even remotely), but GCC 3.2 and 3.3 are very happy with the usage (in a header file) NUM_SIG_CONNECTION_FUNCTIONS_FOR_MEMBERS(0, MAX_SIGNAL_ARGS); while 3.4 complains about that semicolon. What I'm asking is A) does anyone know if 3.4 has a particular -Wno-extra-semicolon, or equivalent, to turn off that warning; or B) what is the proper preprocessor metaprogramming technique to silence the warning. Thanks!! ---------------------------------------------------------------------- Dave Steffen, Ph.D. "There are two ways to write error-free Software Engineer IV programs; only the third one works." Numerica Corporation ph (970) 419-8343 x27 "Pie are not square. Pie are round. fax (970) 223-6797 Cornbread are square" dgsteffen@numerica.us ... anon (usenet) ___________________ Numerica Disclaimer: This message and any attachments are intended only for the individual or entity to which the message is addressed. It is proprietary and may contain privileged information. If you are neither the intended recipient nor the agent responsible for delivering the message to the intended recipient, you are hereby notified that any review, retransmission, dissemination, or taking of any action in reliance upon, the information in this communication is strictly prohibited, and may be unlawful. If you feel you have received this communication in error, please notify us immediately by returning this Email to the sender and deleting it from your computer.