From 42c26b734cf8cf148cf08ae30bf1e05a29bc8851 Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Thu, 7 Oct 2010 03:33:42 -0400
Subject: [PATCH] gc: fix error for 1 <- "foo"

was
x.go:4: invalid operation: 1 <- "foo" (send to receive-only type int)

now
x.go:4: invalid operation: 1 <- "foo" (send to non-chan type int)

R=ken2
CC=golang-dev
https://golang.org/cl/2330042
---
 src/cmd/gc/typecheck.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/cmd/gc/typecheck.c b/src/cmd/gc/typecheck.c
index bb4571d9ff2..f139ee82102 100644
--- a/src/cmd/gc/typecheck.c
+++ b/src/cmd/gc/typecheck.c
@@ -644,6 +644,10 @@ reswitch:
 		l = n->left;
 		if((t = l->type) == T)
 			goto error;
+		if(t->etype != TCHAN) {
+			yyerror("invalid operation: %#N (send to non-chan type %T)", n, t);
+			goto error;
+		}
 		if(!(t->chan & Csend)) {
 			yyerror("invalid operation: %#N (send to receive-only type %T)", n, t);
 			goto error;