#10218: GHC creates incorrect code which throws <<loop>> -------------------------------------+------------------------------------- Reporter: yongqli | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Blocked By: | Test Case: yes Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- Comment (by AlexET): I have simplified the example further. The difference between the working and not working cases is now really small. I think the simplifier core is mostly equal (modulo alpha). However the demand analysis is different. The core-prep also has a case in one which is a let in the other. The stg differ similarly. The cmm differs more (but the difference between a case and a let would cause a larger difference there). In terms of flags currently I know that specialise ,funbox-strict-fields and static-argument-transformation are uneeded. cse, strictness are needed. I will try more later. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10218#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler