kindFunResult panic with => inside a constraint
Following type (found by arkeet on #haskell) causes kindFunResult panic in 7.6 and HEAD:
v :: ((Num Int => Num) ()) => ()
v = v
In a probably related issue,
Prelude> :set -XFlexibleContexts -XRankNTypes
Prelude> type T = Num Int => Num Bool
Prelude> :k T
T :: Constraint
Prelude> :k Num Int => Num Bool
Num Int => Num Bool :: *
Trac metadata
Trac field | Value |
---|---|
Version | 7.6.2 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler (Type checker) |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |