> GHC's excellent warnings are very helpful. They would be somewhat
> more so if it were possible to suppress a warning about a specific bit
> of code. One possible syntax (to which I gave no commitment) would be
>
> {-# WOFF "non-exhaustive pattern matches" #-}
> <offending code>
> {-# WON "non-exhaustive pattern matches" #-}
>
> . Another would be
>
> {-# WOFF 523 #-}
> <offending code>
> {-# WON 523 #-}
>
> where 523 is a warning number emitted with the warning message.
>
> This would be particularly useful with the recently granted wish for
> -Werror.
This would be nice, but it would be tricky to implement: declarations
have to be tagged with a list of "exceptions" to the prevailing warning
settings. I doubt we'll do this any time soon, but patches are welcome
as usual...
(of course, the workaround is to put the offending code into a module of
its own, and use OPTIONS to turn off the appropriate warnings).
Cheers,
SImon
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