[MLton] warnUnused and recursive functions
fluet at tti-c.org
Mon Feb 26 14:46:49 PST 2007
Vesa Karvonen wrote:
> Just a quick note. I just noticed that warnUnused doesn't seem
> to warn about recursive functions. For example, given
> fun foo () = foo () : unit
> val bar = let fun foo () = foo () : unit in foo end
> and -default-ann 'warnUnused true', MLton will only warn about
> Warning: unused.sml 3.8.
> Unused variable: bar.
Hmmm. I thought I ran into this not too long ago (in addition to the
warnUnused and Functors that I mentioned a couple of weeks ago). IIRC,
it isn't difficult to catch this in the elaborator.
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