Ticket #221 (new bug report)

Opened 2 years ago

Parse error with forall in class

Reported by: NeilMitchell Owned by: nibro
Priority: major Milestone:
Component: parser Version:
Keywords: Cc: ndmitchell@…

Description

The following code parses fine with GHC, but not HSE 1.13.2

{-# LANGUAGE ScopedTypeVariables #-}
instance forall a. MyClass a => MyClass [a] where

It gives the error:

Illegal instance declaration

Originally reported as a bug in HLint, http://code.google.com/p/ndmitchell/issues/detail?id=544

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