parse.y: no duplicate attrset ID

* parse.y (intern_str): dynamic attrset ID is registered by
  `rb_id_attrset()` already, so no further registration is needed.
  [ruby-core:62861]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46289 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/parse.y b/parse.y
index a4480b15c7..4ee2b49392 100644
--- a/parse.y
+++ b/parse.y
@@ -10657,7 +10657,9 @@ next_id(VALUE str)
 static ID
 intern_str(VALUE str)
 {
-    return register_static_symid_str(next_id(str), str);
+    ID id = next_id(str);
+    if (ID_DYNAMIC_SYM_P(id) && is_attrset_id(id)) return id;
+    return register_static_symid_str(id, str);
 }
 
 ID