#8779: Exhaustiveness checks for pattern synonyms -------------------------------------+------------------------------------- Reporter: nomeata | Owner: mpickering Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 7.8.1 checker) | Keywords: Resolution: | PatternSynonyms Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D2669 Wiki Page: | -------------------------------------+------------------------------------- Comment (by rwbarton): Ah okay. But that doesn't require knowing anything at all about `f`. It just requires that you used the same `f` in all the equations, and then chose a covering family `p1, ..., pn` of patterns for its output. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8779#comment:49 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler