#15038: Memory Corruption (strange closure type) -------------------------------------+------------------------------------- Reporter: andrewthad | Owner: (none) Type: bug | Status: patch Priority: highest | Milestone: 8.4.3 Component: Compiler | Version: 8.4.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: #9718 | Differential Rev(s): Phab:D4680 Wiki Page: | -------------------------------------+------------------------------------- Comment (by Ömer Sinan Ağacan <omeragacan@…>): In [changeset:"b2ff5dde399cd012218578945ada1d9ff68daa35/ghc" b2ff5dde/ghc]: {{{ #!CommitTicketReference repository="ghc" revision="b2ff5dde399cd012218578945ada1d9ff68daa35" Fix #15038 We introduce a new Id for unused pointer values in unboxed sums that is not CAFFY. Because the Id is not CAFFY it doesn't make non-CAFFY definitions CAFFY, fixing #15038. To make sure anything referenced by the new id will be retained we get a stable pointer to in on RTS startup. Test Plan: Passes validate Reviewers: simonmar, simonpj, hvr, bgamari, erikd Reviewed By: simonmar Subscribers: rwbarton, thomie, carter GHC Trac Issues: #15038 Differential Revision: https://phabricator.haskell.org/D4680 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15038#comment:36> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler