merge revision(s) 57360: [Backport #12884]

	class.c: non-keyword hash class

	* class.c (rb_extract_keywords): keep the class of non-keyword
	  elements hash as the original.  [ruby-core:77813] [Bug #12884]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@57861 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/class.c b/class.c
index 43530c9461..5c54b0c7d4 100644
--- a/class.c
+++ b/class.c
@@ -1841,6 +1841,9 @@ rb_extract_keywords(VALUE *orighash)
     }
     st_foreach(rb_hash_tbl_raw(hash), separate_symbol, (st_data_t)&parthash);
     *orighash = parthash[1];
+    if (parthash[1] && RBASIC_CLASS(hash) != rb_cHash) {
+	RBASIC_SET_CLASS(parthash[1], RBASIC_CLASS(hash));
+    }
     return parthash[0];
 }