#13170: Core Lint error on git HEAD -------------------------------------+------------------------------------- Reporter: dobenour | Owner: rwbarton Type: bug | Status: new Priority: highest | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: | simplCore/should_compile/T13170 Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D3008 Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj):
It seems to be caused by https://phabricator.haskell.org/D2762 not reordering the mapped cases
That looks absolutely right. You need to re-sort the alternatives to ensure thay are still in ascending order. See `CoreSyn` ``` -- 3. The remaining cases are in order of increasing -- tag (for 'DataAlts') or -- lit (for 'LitAlts'). -- This makes finding the relevant constructor easy, -- and makes comparison easier too. ``` Well spotted. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13170#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler