#16392: In ghci, revertCAFs should be executed in the external interpreter when necessary -------------------------------------+------------------------------------- Reporter: lolotp | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 8.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- I believe this bug was discovered and reported earlier here, https://mail.haskell.org/pipermail/ghc-devs/2018-June/015842.html. I stumbled upon this while tracking down a problem with ghci. To describe the problem, we call revertCAFs whenever we load modules in ghci so that they can be re-evaluated. This however, doesn't work as intended when use with `-fexternal-interpreter` because the CAFs of loaded modules actually live in the external interpreter process instead while `revertCAFs` only work for CAFs in the ghci process. To fix this, we should call revertCAFs in the external interpreter when it's used. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16392 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler