#12549: Panic on ":t datatypeName" ---------------------------------+-------------------------------------- Reporter: johnleo | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ---------------------------------+-------------------------------------- Comment (by johnleo): Does not reproduce in 8.0.1. Behavior in 8.0.1 is the following: {{{#!hs :t datatypeName datatypeName ∷ ∀ {d} {t ∷ ★ → (* → *) → ★ → ★} {f ∷ * → *} {a}. Datatype ★ d ⇒ t d f a → [Char] }}} Note the inconsistent `*` and `★`. I was trying this out in 8.1 since I'd seen this behavior in 8.0.1 and intended to create a bug for it and fix it. I haven't made any changes to the 8.1 code. It looks like someone else had already been playing in this area. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12549#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler