From 840e5f34efa77afa4eed5233172c8a2c16c6d456 Mon Sep 17 00:00:00 2001
From: Araq <rumpf_a@web.de>
Date: Wed, 25 Jul 2012 22:09:08 +0200
Subject: [PATCH] no range checks for conversion to unsigned (but I may
 reconsider this)

---
 compiler/ccgexprs.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler/ccgexprs.nim b/compiler/ccgexprs.nim
index 6c8510ff86..ed84a3126a 100755
--- a/compiler/ccgexprs.nim
+++ b/compiler/ccgexprs.nim
@@ -1316,7 +1316,8 @@ proc genCast(p: BProc, e: PNode, d: var TLoc) =
 proc genRangeChck(p: BProc, n: PNode, d: var TLoc, magic: string) =
   var a: TLoc
   var dest = skipTypes(n.typ, abstractVar)
-  if optRangeCheck notin p.options:
+  # range checks for unsigned turned out to be buggy and annoying:
+  if optRangeCheck notin p.options or dest.kind in {tyUInt..tyUInt64}:
     InitLocExpr(p, n.sons[0], a)
     putIntoDest(p, d, n.typ, ropef("(($1) ($2))",
         [getTypeDesc(p.module, dest), rdCharLoc(a)]))