RE: Strange pedantic error message

[David Korn <dkorn at pixelpower dot com>]

>-----Original Message-----
>From: James Montgomerie [mailto:jrmg@dcs.ed.ac.uk]
>Sent: 08 February 2001 10:37

>When compiling with -pedantic (which I know I'm not supposed to do, I just
>thought it would be interesting - I don't usually use it), I often get
>the following warning:
>
>warning: ANSI C forbids conditional expr with only one void side

  If I understand it correctly, what this means is that you have an instance
of the ternary operator 

   x = (test) ? (expr1) : (expr2);

and the types of expr1 and expr2 don't match; specifically, one of them is
void (non-value returning) and the other one isn't.  This is a problem
because it means that depending on the test, the overall expression either
returns a value and has a type or it doesn't.

  You shouldn't be getting this with a simple if .. else.

       DaveK
-- 
we are not seats or eyeballs or end users or consumers.
we are human beings - and our reach exceeds your grasp.
                    deal with it.                      - cluetrain.org 


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