#5661: Wrong error message on attempted import of undefined record field
---------------------------------+------------------------------------------
Reporter: YitzGale | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.0.2 | Keywords:
Testcase: | Blockedby:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
---------------------------------+------------------------------------------
Test case:
A.hs:
{{{
module A where
data AData = AData {right :: ()}
}}}
B.hs:
{{{
module B where
import A (AData(wrong))
}}}
What happens (7.0.2 on Linux):
{{{
$ ghc --make B
[1 of 2] Compiling A ( A.hs, A.o )
[2 of 2] Compiling B ( B.hs, B.o )
B.hs:2:11:
In module `A':
`AData' is a data constructor of `AData'
To import it use
`import A (AData (AData))'
or
`import A (AData (..))'
}}}
It is clear from the syntax of the `import`
that `AData` is referring to the type, not
the constructor. The actual problem is that the
field name is undefined.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5661>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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