From f5740d18bfc2c16c8996dcba9d15303f9404b406 Mon Sep 17 00:00:00 2001
From: glass <glass@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 2 Oct 2017 07:51:27 +0000
Subject: Revert "vm_eval.c: add rb_yield_assoc_or_values()"

This reverts commit r60095 to prevent performance degradation.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@60098 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 struct.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

(limited to 'struct.c')

diff --git a/struct.c b/struct.c
index dc4f99396e..b36dd37e4b 100644
--- a/struct.c
+++ b/struct.c
@@ -686,10 +686,19 @@ rb_struct_each_pair(VALUE s)
 
     RETURN_SIZED_ENUMERATOR(s, 0, 0, struct_enum_size);
     members = rb_struct_members(s);
-    for (i=0; i<RSTRUCT_LEN(s); i++) {
-	VALUE key = rb_ary_entry(members, i);
-	VALUE value = RSTRUCT_GET(s, i);
-	rb_yield_assoc_or_values(key, value);
+    if (rb_block_arity() > 1) {
+	for (i=0; i<RSTRUCT_LEN(s); i++) {
+	    VALUE key = rb_ary_entry(members, i);
+	    VALUE value = RSTRUCT_GET(s, i);
+	    rb_yield_values(2, key, value);
+	}
+    }
+    else {
+	for (i=0; i<RSTRUCT_LEN(s); i++) {
+	    VALUE key = rb_ary_entry(members, i);
+	    VALUE value = RSTRUCT_GET(s, i);
+	    rb_yield(rb_assoc_new(key, value));
+	}
     }
     return s;
 }
-- 
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