gcc 3.2 warnings ?

[Helge Hess]

Hi,

since I upgraded to gcc 3.2 I have to compilation problems:

a) warning: pasting "[" and "[" does not give a valid preprocessing token
- this is some macro, I think I get this with NSAssert and THROW

b) casting Objective-C protocols doesn't seem to work. Eg if I do
  [(id)stream doIt];
the compiler complains that the NGStream protocol doesn't support doIt 
(which is correct, but I did cast !)

Does anybody know what is going on in these cases ? Can I switch off the 
a)-warning and should I report b) as a bug ?

Greetings
  Helge