#12469: Memory fence on writes to MutVar/Array missing on ARM -------------------------------------+------------------------------------- Reporter: rrnewton | Owner: trommler Type: bug | Status: patch Priority: normal | Milestone: 8.0.2 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: memory model Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect result | Unknown/Multiple at runtime | Test Case: Blocked By: | Blocking: 12537 Related Tickets: | Differential Rev(s): Phab:D2495 Wiki Page: | Phab:D2525 -------------------------------------+------------------------------------- Comment (by trommler): Another Stackage Nightly build with ghc 8.0.1 patched with Phab:D2495 and Phab:D2525: {{{ ghc: internal error: MUT_VAR_CLEAN object entered! (GHC version 8.0.1 for powerpc64le_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} This error seems to be even more difficult to trigger on Open Build Service. I have not seen this locally on my PowerMac (running powerpc64 Linux). -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12469#comment:18 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler