#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): Wow. I think we have discovered that it'll be really hard to ensure that a banged data constructor field always contains a correctly-tagged pointer to an evaluated object. See https://ghc.haskell.org/trac/ghc/ticket/15696#comment:36 -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15155#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler