From 423f872c846d63056ba75f067201ba9c221231d1 Mon Sep 17 00:00:00 2001
From: "Yukihiro \"Matz\" Matsumoto" <matz@ruby.or.jp>
Date: Mon, 19 Nov 2018 15:26:19 +0900
Subject: Need to keep rooms for empty splat; fix #4166

---
 mrbgems/mruby-compiler/core/parse.y | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
index ac8724377..3a9da3d36 100644
--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -2482,6 +2482,7 @@ f_margs         : f_marg_list
                     }
                 | f_marg_list ',' tSTAR
                     {
+                      local_add_f(p, 0);
                       $$ = list3($1, (node*)-1, 0);
                     }
                 | f_marg_list ',' tSTAR ',' f_marg_list
@@ -2498,11 +2499,16 @@ f_margs         : f_marg_list
                     }
                 | tSTAR
                     {
+                      local_add_f(p, 0);
                       $$ = list3(0, (node*)-1, 0);
                     }
-                | tSTAR ',' f_marg_list
+                | tSTAR ','
                     {
-                      $$ = list3(0, (node*)-1, $3);
+                      local_add_f(p, 0);
+                    }
+                  f_marg_list
+                    {
+                      $$ = list3(0, (node*)-1, $4);
                     }
                 ;
 
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