#15728: Program with safe array operations triggers debug runtime assertion -------------------------------------+------------------------------------- Reporter: osa1 | Owner: (none) Type: bug | Status: closed Priority: highest | Milestone: Component: Runtime System | Version: 8.6.1 Resolution: invalid | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by osa1): That's because the `primitive` library is a very thin wrapper around GHC primops, and GHC primops (`readArray#` etc.) don't do bounds checking. FWIW I just opened a ticket: https://github.com/haskell/primitive/issues/212 at the very least we should mention this in primitive's haddocks. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15728#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler