Rework GHC's treatment of constraints in kinds
GHC 8.6 accepts
data Q :: Eq a => Type
It shouldn't, as we can't have Eq a
as a constraint in kinds. Note that writing a constructor for Q
is rejected.
Trac metadata
Trac field | Value |
---|---|
Version | 8.6.3 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |