because its effect is depending on when context switches are bound to happen
Any ideas why -V0 doesn't fix this? It seems to have fixed the same
#16065: Stack squeezing during context switches makes for non-determinism in allocations -------------------------------------+------------------------------------- Reporter: sgraf | Owner: (none) Type: task | Status: new Priority: normal | Milestone: ⊥ Component: Runtime System | Version: 8.6.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #4450, #8861 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by sgraf): Replying to [comment:3 osa1]: problem in #4450. Yes, it fixes that, too (https://ghc.haskell.org/trac/ghc/ticket/8611#comment:11). But it isn't enabled by default (and nor should it). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16065#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler