[project @ 2003-01-23 11:22:50 by simonmar]

A nullary constructor in an argument position should refer to the
constructor worker, not the wrapper.  In most cases they're the same,
but when using -funbox-strict-fields (or maybe a context on a data
type?) they can be different, leading to a crash.

MERGE TO STABLE

ghc/compiler/stgSyn/CoreToStg.lhs

@@ -538,7 +538,7 @@ coreToStgArgs (arg : args)	-- Non-type argument
 	fvs = args_fvs `unionFVInfo` arg_fvs
 	stg_arg = case arg' of
 		       StgApp v []      -> StgVarArg v
-		       StgConApp con [] -> StgVarArg (dataConWrapId con)
+		       StgConApp con [] -> StgVarArg (dataConWorkId con)
 		       StgLit lit       -> StgLitArg lit
 		       _ 		-> pprPanic "coreToStgArgs" (ppr arg)
     in