#70: Uninformative error in do binding
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Reporter: neil | Owner: nobody
Type: defect | Status: new
Priority: major | Milestone:
Component: hugs | Version: 200609
Keywords: |
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Given the program:
{{{
main = do
[] <- return "test"
print "test"
> main
Program error: user error (match fails)
}}}
It would be nice if the message at least mentioned "do" somewhere. The
only way of figuring out what going wrong in a big program is to flip to
GHC.
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Ticket URL: <http://hackage.haskell.org/trac/hugs/ticket/70>
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