https://git.ruby-lang.org/ruby.git/commit/?id=0c450b8647

From 0c450b86476322ea4c407d0de4d7d1c5d8523126 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Mon, 21 Dec 2020 15:11:50 +0900
Subject: `begin ... end` is not a literal


diff --git a/parse.y b/parse.y
index 50d24df..1637921 100644
--- a/parse.y
+++ b/parse.y
@@ -488,7 +488,7 @@ static int value_expr_gen(struct parser_params*,NODE*); https://github.com/ruby/ruby/blob/trunk/parse.y#L488
 static void void_expr(struct parser_params*,NODE*);
 static NODE *remove_begin(NODE*);
 static NODE *remove_begin_all(NODE*);
-#define value_expr(node) value_expr_gen(p, (node) = remove_begin(node))
+#define value_expr(node) value_expr_gen(p, (node))
 static NODE *void_stmts(struct parser_params*,NODE*);
 static void reduce_nodes(struct parser_params*,NODE**);
 static void block_dup_check(struct parser_params*,NODE*,NODE*);
-- 
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