From: sof <unknown>
Date: Thu, 21 Jan 1999 20:00:55 +0000 (+0000)
Subject: [project @ 1999-01-21 20:00:55 by sof]
X-Git-Tag: Approx_2487_patches~28
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=df4e13fc6f98ac689238ba325c7b276bbd8e568c;p=ghc-hetmet.git

[project @ 1999-01-21 20:00:55 by sof]
dsExpr: make sure special case for unboxed tuple patterns only
'fire' when the tup. pat. is unboxed.
---

diff --git a/ghc/compiler/deSugar/DsExpr.lhs b/ghc/compiler/deSugar/DsExpr.lhs
index afdf166..622b4ef 100644
--- a/ghc/compiler/deSugar/DsExpr.lhs
+++ b/ghc/compiler/deSugar/DsExpr.lhs
@@ -306,10 +306,10 @@ dsExpr (HsSCC cc expr)
     getModuleAndGroupDs		`thenDs` \ (mod_name, group_name) ->
     returnDs (Note (SCC (mkUserCC cc mod_name group_name)) core_expr)
 
--- special case to handle unboxed tuple patterns
+-- special case to handle unboxed tuple patterns.
 
 dsExpr (HsCase discrim matches@[Match _ [TuplePat ps boxed] _ _] src_loc)
- | all var_pat ps 
+ | not boxed && all var_pat ps 
  =  putSrcLocDs src_loc $
     dsExpr discrim				`thenDs` \ core_discrim ->
     matchWrapper CaseMatch matches "case"	`thenDs` \ ([discrim_var], matching_code) ->