#15155: How untagged pointers sneak into banged fields -------------------------------------+------------------------------------- Reporter: heisenbug | Owner: heisenbug Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.4.2 Resolution: | Keywords: CodeGen Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: 14677 Related Tickets: #13027 #7308 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): I agree with comment:17. But we also agreed that our short term plan is * Do ''not'' require the invariant that every strict constructor field must be a correctly tagged pointer to a data value. Fewer invariants means less to think about - and this is a delicate one! Moreover, it's not clear whether efficiency would be better or worse with it. But yes, it'd be good to try it out. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15155#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler