From 8dadeebd084bb554b928c822abb43906766bf06d Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Wed, 22 Apr 2015 20:33:06 +0200
Subject: fix #2585 properly

---
 compiler/parampatterns.nim | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'compiler')

diff --git a/compiler/parampatterns.nim b/compiler/parampatterns.nim
index 55b4bf213..b7fe269df 100644
--- a/compiler/parampatterns.nim
+++ b/compiler/parampatterns.nim
@@ -184,12 +184,14 @@ proc isAssignable*(owner: PSym, n: PNode): TAssignableResult =
   case n.kind
   of nkSym:
     # don't list 'skLet' here:
-    if n.sym.kind in {skVar, skResult, skTemp, skParam}:
+    if n.sym.kind in {skVar, skResult, skTemp}:
       if owner != nil and owner.id == n.sym.owner.id and
           sfGlobal notin n.sym.flags:
         result = arLocalLValue
       else:
         result = arLValue
+    elif n.sym.kind == skParam and n.sym.typ.kind == tyVar:
+      result = arLValue
     elif n.sym.kind == skType:
       let t = n.sym.typ.skipTypes({tyTypeDesc})
       if t.kind == tyVar: result = arStrange
-- 
cgit 1.4.1-2-gfad0