In fact you should feel lucky to get a warning. In that case:
>
> Hi All
>
> I noticed some odd behavior in a little app with which I was
> screwing around and when I went looking for the cause, I found
> something quite unsettling.
>
> The following code (and a few of its siblings) compiled (though
> a warning, not nearly stern enough, was generated - a
> non-compatible equality expression VWEQ).
>
> if rb = single_rb = single_rb then
> form_type := K_form_type_single
> ..
>
> How can this be? Sure, it came about thanks to some ham-fisted
> copy-and-paste on my part, but how does a line like that
> compile? The subjects of the comparison(s) are
> EV_RADIO_BUTTONs, btw.
>
> This strikes me as more serious than a warning, as it would
> likely change program behavior from what was intended.
>
> Thanks
> R
>
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