From 42adc5bc6bb532e20bf2191ad99781ee701dea36 Mon Sep 17 00:00:00 2001
From: Jeremy Evans <code@jeremyevans.net>
Date: Tue, 20 Aug 2019 12:28:04 -0700
Subject: [PATCH] Add back missing warning for duplicate keys in splatted
 hashes

This reverts the changes to parse.y in
a5b37262524ac39d2af13eea174486370a581c23 as they are not actually
needed and cause the warning for duplicate hash keys to not be
emitted.
---
 parse.y | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/parse.y b/parse.y
index c575dfdded..ba43053a86 100644
--- a/parse.y
+++ b/parse.y
@@ -5151,6 +5151,12 @@ assocs		: assoc
 			    assocs = tail;
 			}
 			else if (tail) {
+                            if (assocs->nd_head &&
+                                !tail->nd_head && nd_type(tail->nd_next) == NODE_ARRAY &&
+                                nd_type(tail->nd_next->nd_head) == NODE_HASH) {
+                                /* DSTAR */
+                                tail = tail->nd_next->nd_head->nd_head;
+                            }
 			    assocs = list_concat(assocs, tail);
 			}
 			$$ = assocs;
@@ -5188,7 +5194,11 @@ assoc		: arg_value tASSOC arg_value
 		| tDSTAR arg_value
 		    {
 		    /*%%%*/
-			$$ = list_append(p, NEW_LIST(0, &@$), $2);
+                        if (nd_type($2) == NODE_HASH &&
+                            !($2->nd_head && $2->nd_head->nd_alen))
+                            $$ = 0;
+                        else
+                            $$ = list_append(p, NEW_LIST(0, &@$), $2);
 		    /*% %*/
 		    /*% ripper: assoc_splat!($2) %*/
 		    }