#7672: boot file entities are sometimes invisible and are not (semantically) unified with corresponding entities in implementing module -------------------------------------+------------------------------------- Reporter: skilpat | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler (Type | Version: 7.4.2 checker) | Keywords: backpack Resolution: | Architecture: x86_64 Operating System: Linux | (amd64) Type of failure: GHC rejects | Test Case: valid program | Blocking: Blocked By: | Differential Revisions: Related Tickets: | -------------------------------------+------------------------------------- Comment (by ezyang): The reason this occurs is when we process imports in `rnImportDecl`, we filter out any identifiers which come from a self-boot: {{{ let gbl_env = mkGlobalRdrEnv (filterOut from_this_mod gres) }}} So these identifiers never get added to the GlobalRdrEnv, and thus aren't brought into scope. I don't know what happens if you remove that `filterOut`. It comes from some very old code. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/7672#comment:8 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler