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RE: [lwip-devel] RE : [lwip-commits] lwip/src api/api_lib.capi/netdb.c a


From: Pettinato, Jim
Subject: RE: [lwip-devel] RE : [lwip-commits] lwip/src api/api_lib.capi/netdb.c api/sockets....
Date: Thu, 19 Feb 2009 09:41:52 -0500

The # flag (alternate form) should be very well known, it is documented in the 
Bible (K&R 2nd ed, appendix B section B.1.2, formatted output). I would hope 
all modern compilers support it, I know all the ones I've used do.

- Jim 
 

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of Simon Goldschmidt
Sent: Thursday, February 19, 2009 8:48 AM
To: lwip-devel
Subject: Re: [lwip-devel] RE : [lwip-commits] lwip/src api/api_lib.capi/netdb.c 
api/sockets....


> You should add a comment in the CHANGELOG, else, it could be difficult 
> to remember that ports have to be upgraded.

Yes, I forgot that.

> In the same spirit, about another recent change, shouldn't we add 
> another format string for pointers (actually %p is used in igmp.c by example) 
> ?

I don't think so: pointers (%p, used all over the stack), integers (%d) and 
some others are well define at 
http://opengroup.org/onlinepubs/007908799/xsh/fprintf.html

We only need defines for types that are not defined there and especially for 
those which can be mapped to int/long/long-long depending on the platform.

Aside from that, I don't know how well known the '#' flag is. Does anybody know 
if that is portable enough to be used?

Simon
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