From: simonmar <unknown>
Date: Thu, 23 Jan 2003 11:22:50 +0000 (+0000)
Subject: [project @ 2003-01-23 11:22:50 by simonmar]
X-Git-Tag: Approx_11550_changesets_converted~1251
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=55afc498ef4a0e8ac88e34a672f05caa3fc01139;p=ghc-hetmet.git

[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
---

diff --git a/ghc/compiler/stgSyn/CoreToStg.lhs b/ghc/compiler/stgSyn/CoreToStg.lhs
index c7c029e..f6033c2 100644
--- a/ghc/compiler/stgSyn/CoreToStg.lhs
+++ b/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