#16128: Pattern match checker should shortcut on simple cases -------------------------------------+------------------------------------- Reporter: gbaz | Owner: (none) Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Resolution: | Keywords: | PatternMatchWarnings 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 simonpj):
It seems to me that in a case like this, GHC should be able to just check that there are no duplicate strings
I agree that such a simple use-case should not make the pattern match checker have a heart attack. The pattern-match checker badly needs someone to love it. It's basically in quite good shape, with a published paper to explain how it works. But it suffers from having no active maintainer -- except the ever-energetic Ryan S, who has many other things on his radar. Who would like to do this? Many people would thank you! See [wiki:PatternMatchCheck] for a list of open tickets. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16128#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler