#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 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler