kern/177948: [ipfw] ipfw fails to parse port ranges (p1-p2) for udp

[Ian Smith]

The following reply was made to PR kern/177948; it has been noted by GNATS.

From: Ian Smith <smithi at nimnet.asn.au>
To: Jukka Ukkonen <jau at oxit.fi>
Cc: bug-followup at FreeBSD.org
Subject: Re: kern/177948: [ipfw] ipfw fails to parse port ranges (p1-p2) for
 udp
Date: Sun, 21 Apr 2013 22:21:06 +1000 (EST)

 On Sun, 21 Apr 2013 14:33:07 +0300, Jukka Ukkonen wrote:
  > On 04/21/13 05:17, Ian Smith wrote:
  > > I can't reproduce this on 9.1-RELEASE, unless I put a space anywhere
  > > amongst p1, '-' and p2, in which case I see the same error you show.
 [..]
 
  > Right,
  > 
  > After some further inspection I have news...
  > 
  > This seems to be a problem in clang-cpp which adds an extra space
  > before the dash in a macro which should have a value of the format
  > "number1-number2". So, e.g. "1024-65535" becomes "1024 -65535".
 
 Naughty clang!  For one thing, that's emitting two values ..
 
  > If I use gcpp instead, everything works just fine with ipfw.
  > 
  > The fact that I did not see this happening with TCP rules as well was
  > just lucky coincidence.
  > 
  > So, this is a clang problem, not an ipfw problem!!!
  > 
  > Cheers,
  > --jau
 
 Good news for ipfw, anyway.  I don't know the correct form .. should 
 this PR be reassigned, or closed with a reference in a fresh clang PR?
 
 cheers, Ian