#13710: panic with boot and -jX -------------------------------------+------------------------------------- Reporter: pacak | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.1-rc2 Resolution: | Keywords: hs-boot Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by ezyang): So... apparently this patch fixes the problem, but I haven't quite figured out why. {{{ diff --git a/compiler/iface/TcIface.hs b/compiler/iface/TcIface.hs index 3a6a4070d2..50fafcdadf 100644 --- a/compiler/iface/TcIface.hs +++ b/compiler/iface/TcIface.hs @@ -908,7 +908,8 @@ tcIfaceDataCons tycon_name tycon tc_tybinders if_cons ; ~(eq_spec, theta, arg_tys, stricts) <- forkM (mk_doc dc_name) $ do { eq_spec <- tcIfaceEqSpec spec ; theta <- tcIfaceCtxt ctxt - ; arg_tys <- mapM tcIfaceType args + ; arg_tys <- forkM (mk_doc dc_name <+> text "arg_tys") + $ mapM tcIfaceType args ; stricts <- mapM tc_strict if_stricts -- The IfBang field can mention -- the type itself; hence inside forkM }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13710#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler