#12071: PowerPC: RTS SMP functions lack memory barriers -------------------------------------+------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.0.2 Component: Runtime | Version: 8.0.1 System | Keywords: PowerPC SMP | Operating System: Unknown/Multiple Architecture: | Type of failure: Runtime crash Unknown/Multiple | Test Case: | Blocked By: concurrent/prog001/concprog001 | Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- @hvr reported on POWER7 big endian (powerpc64) and on AIX (powerpc): {{{ internal error: END_TSO_QUEUE object entered! (GHC version 8.0.0.20160421 for powerpc64_unknown_linux) }}} Also `concprog001` segfaults, which I falsely attributed to #11259 (no runtime linker support) when I marked the test broken on powerpc64. I propose to use gcc and clang `_sync_*` built-ins that are already used in `libraries/ghc-prim/cbits/atomic.c` instead of CPP ifdefs and inline assembly. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12071 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler