From 0d1f76ded2f84513d3321db1962912792aacf3a8 Mon Sep 17 00:00:00 2001
From: Robert Griesemer <gri@golang.org>
Date: Fri, 29 Apr 2011 13:06:03 -0700
Subject: [PATCH] go/parser: accept parenthesized receive operations in select
 statements

R=rsc
CC=golang-dev
https://golang.org/cl/4439082
---
 src/pkg/go/parser/parser.go      | 4 ----
 src/pkg/go/parser/parser_test.go | 1 +
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/src/pkg/go/parser/parser.go b/src/pkg/go/parser/parser.go
index 5c57e41d13..afa9ae517b 100644
--- a/src/pkg/go/parser/parser.go
+++ b/src/pkg/go/parser/parser.go
@@ -1780,10 +1780,6 @@ func (p *parser) parseCommClause() *ast.CommClause {
 				rhs = lhs[0]
 				lhs = nil // there is no lhs
 			}
-			if x, isUnary := rhs.(*ast.UnaryExpr); !isUnary || x.Op != token.ARROW {
-				p.errorExpected(rhs.Pos(), "send or receive operation")
-				rhs = &ast.BadExpr{rhs.Pos(), rhs.End()}
-			}
 			if lhs != nil {
 				comm = &ast.AssignStmt{lhs, pos, tok, []ast.Expr{rhs}}
 			} else {
diff --git a/src/pkg/go/parser/parser_test.go b/src/pkg/go/parser/parser_test.go
index 2f1ee6bfc0..5b52f51d4a 100644
--- a/src/pkg/go/parser/parser_test.go
+++ b/src/pkg/go/parser/parser_test.go
@@ -51,6 +51,7 @@ var validPrograms = []interface{}{
 	`package p; type T []int; func f() { for _ = range []int{T{42}[0]} {} };`,
 	`package p; var a = T{{1, 2}, {3, 4}}`,
 	`package p; func f() { select { case <- c: case c <- d: case c <- <- d: case <-c <- d: } };`,
+	`package p; func f() { select { case x := (<-c): } };`,
 	`package p; func f() { if ; true {} };`,
 	`package p; func f() { switch ; {} };`,
 }