Partial type signatures + extensions panic
Partial type signatures combined with the following GHC extensions cause a panic:
class C a where default f :: _ -- DefaultSignatures
instance Num Bool where negate :: _ -- InstanceSigs
deriving instance _ -- StandaloneDerivingTrac metadata
| Trac field | Value |
|---|---|
| Version | 7.9 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler (Type checker) |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | thomasw |
| Operating system | |
| Architecture |