#11224: Program doesn't preserve semantics after pattern synonym inlining. -------------------------------------+------------------------------------- Reporter: anton.dubovik | Owner: Type: bug | Status: new Priority: highest | Milestone: 8.0.1 Component: Compiler | Version: 7.10.2 Resolution: | Keywords: | PatternSynonyms Operating System: Windows | Architecture: x86_64 Type of failure: Incorrect result | (amd64) at runtime | Test Case: Blocked By: | Blocking: Related Tickets: #11225 | Differential Rev(s): Phab:D1632 Wiki Page: | -------------------------------------+------------------------------------- Comment (by rvion): Hello, will expressions like: {{{ module Data.Aeson.Types.AsJs where import qualified Data.Aeson.Types as I pattern JsOptions a b c d e <- I.Options a b c d e }}} keep working correctly after this fix ? I use patterns a lot to automatically reexport "qualified" modules. (WIP project) see example here: https://github.com/rvion/ride/blob/94767d043b33fa5702852fba384b4e6dcf4007a5/... or here: https://github.com/rvion/ride/blob/94767d043b33fa5702852fba384b4e6dcf4007a5/... Otherwise, according to http://mpickering.github.io/posts/2015-12-12 -pattern-synonyms-8.html, most of my remaining issues seems to be solved in HEAD, thanks very much for all those great enhancements! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11224#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler