Richard Henderson wrote:- > On Thu, Nov 17, 2005 at 03:18:00PM -0800, Ian Lance Taylor wrote: > > I don't think you should get a warning for not using the return value of a > > function, at least not under -Wunused. > > For this, I agree. Except that we're not talking about the > return value of the function directly, we're talking about > the return value of a cast. > > Given that one can always cast any value to void to suppress > this warning, I'm unconcerned about getting every single edge > case "correct". Especially for edge cases for which one can > reasonably disagree as to what is correct.
My 2 cents: a) the warning should stay, but the wording should be about a pointless (or unused) cast instead b) the kernel folks should have 2 macros, with and without the cast, and use whichever is appropriate. Assuming the cast is useful somewhere, of course. Neil.
