Re: [GHC] #13242: Panic "StgCmmEnv: variable not found" with ApplicativeDo and ExistentialQuantification

#13242: Panic "StgCmmEnv: variable not found" with ApplicativeDo and ExistentialQuantification -------------------------------------+------------------------------------- Reporter: ljli | Owner: simonmar Type: bug | Status: new Priority: highest | Milestone: 8.0.3 Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Simon Peyton Jones ): In [changeset:"484f8d35b7cb3f77d96f9f4ffc16bb8c946f47fd/ghc" 484f8d3/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="484f8d35b7cb3f77d96f9f4ffc16bb8c946f47fd" Fix ApplicativeDo constraint scoping This patch fixes Trac #13242, by a bit of fancy footwork with the LIE variable in which the WantedConstraints are collected. I think it can be simplified further, using a 'map'. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13242#comment:10 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler