#12784: Typechecker regression in GHC 8.0.2 involving DefaultSignatures -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: Type: bug | Status: new Priority: highest | Milestone: 8.0.2 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by rwbarton): I don't know exactly what changed in GHC here, but the current monad- logger code is utterly wrong and the "workaround" is actually just replacing the code with what the author doubtless meant to write in the first place. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12784#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler