GHC panics on a crazy type signature
x :: [Enum a => (forall a. Num a => a)]
x = []I have NO idea what that would mean or whatever it makes sense at all, but it fails with:
: panic! (the 'impossible' happened)
(GHC version 6.10.4 for i386-unknown-mingw32):
TcTyFuns.flattenType: unexpected PredTypeAnd it said I should report it. :)
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.10.4 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler (Type checker) |
| Test case | |
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