#2292: Poor error message if type signature lacks definition
-----------------------------+----------------------------------------------
Reporter: NeilMitchell | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.8.2 | Severity: minor
Keywords: | Testcase:
Architecture: Unknown | Os: Unknown
-----------------------------+----------------------------------------------
The file
{{{
nub :: a
}}}
Produces the error message in GHC:
{{{
Temp.hs:5:0: Not in scope: `nub'
}}}
The problem isn't that {{{nub}}} is not in scope, but that there is no
definition. Importing {{{Data.List}}} (and bringing {{{nub}}} into scope)
doesn't solve the problem, but gives a new error message. Hugs does quite
a bit better:
{{{
ERROR file:.\Temp.hs:5 - Missing binding for variable "nub" in type
signature
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2292>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
