#12949: Pattern coverage mistake -------------------------------------+------------------------------------- Reporter: dfeuer | Owner: gkaracha Type: bug | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: | PatternMatchWarnings Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple error/warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by gkaracha): I guess I could fix this by - Turning `Name` back into `Id` in the checker (incl. the term oracle) - Checking equality on term variables taking their type into account, something like this: {{{#!hs tmEqVar :: Id -> Id -> Bool tmEqVar x1 x2 = (idName x1 == idName x2) && (idType x1 `eqType` idType x2) }}} Does that make sense? PS. I am not happy to have types in the term oracle (it's not as modular as I liked it to be) but I don't know of any other way to "restore" the implicit invariant that each variable has only **one type**. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12949#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler