[GHC] #9922: Partial type signatures + extensions panic
GHC
ghc-devs at haskell.org
Wed Dec 24 11:45:29 UTC 2014
#9922: Partial type signatures + extensions panic
-------------------------------------+-------------------------------------
Reporter: monoidal | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler (Type | Version: 7.9
checker) | Operating System:
Keywords: | Unknown/Multiple
Architecture: Unknown/Multiple | Type of failure: Compile-
Difficulty: Unknown | time crash
Blocked By: | Test Case:
Related Tickets: | Blocking:
| Differential Revisions:
-------------------------------------+-------------------------------------
Partial type signatures combined with the following GHC extensions cause a
panic:
{{{#!hs
class C a where default f :: _ -- DefaultSignatures
instance Num Bool where negate :: _ -- InstanceSigs
deriving instance _ -- StandaloneDeriving
}}}
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9922>
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