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  • #646

Closed
Open
Opened Jan 04, 2006 by guest@trac-guest

ASSERT fails on newtype + forall

The following module causes an ASSERT failure in the HEAD version of ghc 6.5.

==== BadNewtype.hs ====
module BadNewtype where

newtype Foo = forall a . Foo a

================

> ghci-6.5 -fglasgow-exts BadAssert.hs 

Loading package base-1.0 ... linking ... done.
[1 of 1] Compiling BadAssert        ( BadAssert.hs, interpreted )
*** Exception: ASSERT failed! file typecheck/TcTyClsDecls.lhs, line 466
> 
Trac metadata
Trac field Value
Version
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler (Type checker)
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture
Assignee
Assign to
6.6
Milestone
6.6
Assign milestone
Time tracking
None
Due date
None
Reference: ghc/ghc#646