From 8a089c07ec13c2c9d3f721f2236624f6284b7877 Mon Sep 17 00:00:00 2001
From: Robert Griesemer <gri@golang.org>
Date: Thu, 9 Jan 2014 14:51:23 -0800
Subject: [PATCH] go/parser: slightly improved error message by adding hint

It's difficult to make this much better w/o much
more effort. This is a rare case and probably not
worth it.

Fixes #6052.

R=golang-codereviews, bradfitz, adonovan
CC=golang-codereviews
https://golang.org/cl/49740045
---
 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 c4523318f2..d8cde99de2 100644
--- a/src/pkg/go/parser/parser.go
+++ b/src/pkg/go/parser/parser.go
@@ -1752,7 +1752,7 @@ func (p *parser) makeExpr(s ast.Stmt) ast.Expr {
 	if es, isExpr := s.(*ast.ExprStmt); isExpr {
 		return p.checkExpr(es.X)
 	}
-	p.error(s.Pos(), "expected condition, found simple statement")
+	p.error(s.Pos(), "expected condition, found simple statement (missing parentheses around composite literal?)")
 	return &ast.BadExpr{From: s.Pos(), To: s.End()}
 }
 
-- 
2.48.1