#11700: pattern match bug -------------------------------------+------------------------------------- Reporter: TobyGoodwin | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: https://github.com/TobyGoodwin | /odd-ghc-pattern-bug | Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- With some types built by persistent-template, I'm running into very odd behaviour. Attempting to pull apart a tuple in one go... {{{#!hs let (Entity museKey muse, Entity msgKey msg, Entity fldrKey fldr) = cluster }}} fails (or rather, attempting to use msg or fldr fails) with errors like {{{ Couldn't match expected type ‘Folder’ with actual type ‘Folder’ }}} But splitting the pattern up: {{{#!hs let (a, b, c) = cluster Entity museKey muse = a Entity msgKey msg = b Entity fldrKey fldr = c }}} everything works normally Complete test case here: https://github.com/TobyGoodwin/odd-ghc-pattern- bug -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11700 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler