From: Russ Cox <rsc@golang.org>
Date: Tue, 7 Jul 2009 04:37:29 +0000 (-0700)
Subject: fix bug involving typed nil constants:
X-Git-Tag: weekly.2009-11-06~1247
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=a14b28a24d1add0c260160f9fbb986597961b7eb;p=gostls13.git

fix bug involving typed nil constants:
interface = (*int)(nil) is not the same as
interface = nil.

package main
func main() {
	var x interface{} = (*int)(nil);
	println(x.(*int));
}

R=ken
OCL=31232
CL=31232
---

diff --git a/src/cmd/gc/const.c b/src/cmd/gc/const.c
index 5ce4ebee74..d45e6136a1 100644
--- a/src/cmd/gc/const.c
+++ b/src/cmd/gc/const.c
@@ -94,7 +94,7 @@ convlit1(Node *n, Type *t, int explicit)
 		goto bad;
 
 	if(et == TINTER) {
-		if(ct == CTNIL) {
+		if(ct == CTNIL && n->type == types[TNIL]) {
 			n->type = t;
 			return;
 		}