#12820: Regression around pattern synonyms and higher-rank types -------------------------------------+------------------------------------- Reporter: goldfire | Owner: goldfire Type: bug | Status: new Priority: normal | Milestone: Component: Compiler (Type | Version: 8.1 checker) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): This regression was introduced somewhere between commit 45bfd1a65978ee282d8d2cc1ddb7e3e5f4cd4717 (Refactor typechecking of pattern bindings) and 9417e57983dbcf7f500cca16163b11d1abb699e6 (Refactor occurrence-check logic). (I'm 90% sure it's 45bfd1a65978ee282d8d2cc1ddb7e3e5f4cd4717, but I can't say with certainty because that commit was in the middle of a slew of commits which didn't compile correctly until 9417e57983dbcf7f500cca16163b11d1abb699e6.) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12820#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler