From 34ad3995e06fb4a4e209adfbd11367cc3d22f8b8 Mon Sep 17 00:00:00 2001 From: Shenghou Ma Date: Fri, 25 May 2012 00:08:52 +0800 Subject: [PATCH] cmd/cc: fix uint right shift in constant evaluation Fixes #3664. R=golang-dev, bradfitz, rsc CC=golang-dev https://golang.org/cl/6249048 --- src/cmd/cc/scon.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/cmd/cc/scon.c b/src/cmd/cc/scon.c index 193331f774..f6031a5be7 100644 --- a/src/cmd/cc/scon.c +++ b/src/cmd/cc/scon.c @@ -175,7 +175,10 @@ evconst(Node *n) break; case OLSHR: - v = (uvlong)l->vconst >> r->vconst; + if(l->type->width != sizeof(uvlong)) + v = ((uvlong)l->vconst & 0xffffffffULL) >> r->vconst; + else + v = (uvlong)l->vconst >> r->vconst; break; case OASHR: -- 2.48.1