From d26100d529604767aaad20866e84092e620c7e22 Mon Sep 17 00:00:00 2001
From: Yukihiro Matsumoto <matz@ruby-lang.org>
Date: Wed, 23 May 2012 12:05:30 +0900
Subject: allow empty paren as a valid expr

---
 src/parse.y | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/parse.y b/src/parse.y
index 871842668..752993a4a 100644
--- a/src/parse.y
+++ b/src/parse.y
@@ -1869,6 +1869,10 @@ primary		: literal
 		    {
 		      $$ = $2;
 		    }
+		| tLPAREN_ARG {p->lstate = EXPR_ENDARG;} rparen
+		    {
+		      $$ = 0;
+		    }
 		| tLPAREN compstmt ')'
 		    {
 		      $$ = $2;
-- 
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