#14075: GHC panic with parallel make -------------------------------------+------------------------------------- Reporter: inaki | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.4.1 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: #13803, #13981 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * cc: ezyang (added) * priority: normal => high * milestone: => 8.4.1 Comment: This is a regression from GHC 8.0.2: {{{ $ /opt/ghc/8.0.2/bin/ghc -j2 -fforce-recomp F O V [1 of 4] Compiling O ( O.hs, O.o ) [2 of 4] Compiling F[boot] ( F.hs-boot, F.o-boot ) [3 of 4] Compiling F ( F.hs, F.o ) F.hs-boot:7:1: error: ‘F.F’ is exported by the hs-boot file, but not exported by the module F.hs:1:1: error: instance O.O F.F -- Defined at F.hs-boot:8:10 is defined in the hs-boot file, but not in the module itself }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14075#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler