From 3eb9adeeb8261662f87d8cb20f5e1c95a2506228 Mon Sep 17 00:00:00 2001
From: Robert Griesemer <gri@golang.org>
Date: Mon, 29 Jul 2013 16:00:28 -0700
Subject: [PATCH] go/parser: don't report name errors if DeclarationErrors is
 not set

R=adonovan
CC=golang-dev
https://golang.org/cl/12072043
---
 src/pkg/go/parser/parser.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pkg/go/parser/parser.go b/src/pkg/go/parser/parser.go
index a0ac8d7131..c3245e375d 100644
--- a/src/pkg/go/parser/parser.go
+++ b/src/pkg/go/parser/parser.go
@@ -2385,7 +2385,7 @@ func (p *parser) parseFile() *ast.File {
 	// Go spec: The package clause is not a declaration;
 	// the package name does not appear in any scope.
 	ident := p.parseIdent()
-	if ident.Name == "_" {
+	if ident.Name == "_" && p.mode&DeclarationErrors != 0 {
 		p.error(p.pos, "invalid package name _")
 	}
 	p.expectSemi()
-- 
2.48.1