1 files changed, 8 insertions, 0 deletions
diff --git a/hash.c b/hash.c
index b61784af3a..0f1c460c49 100644
--- a/hash.c
+++ b/hash.c
@@ -30,6 +30,8 @@
 # endif
 #endif
 
+VALUE rb_no_keyword_hash;
+
 #ifndef HASH_DEBUG
 #define HASH_DEBUG 0
 #endif
@@ -3274,6 +3276,8 @@ inspect_hash(VALUE hash, VALUE dummy, int recur)
 static VALUE
 rb_hash_inspect(VALUE hash)
 {
+    if (hash == rb_no_keyword_hash)
+	return rb_usascii_str_new2("{(NO KEYWORD)}");
     if (RHASH_EMPTY_P(hash))
 	return rb_usascii_str_new2("{}");
     return rb_exec_recursive(inspect_hash, hash, 0);
@@ -6273,6 +6277,10 @@ Init_Hash(void)
      */
     rb_define_global_const("ENV", envtbl);
 
+    rb_no_keyword_hash = rb_hash_new();
+    rb_hash_freeze(rb_no_keyword_hash);
+    rb_gc_register_mark_object(rb_no_keyword_hash);
+
     /* for callcc */
     ruby_register_rollback_func_for_ensure(hash_foreach_ensure, hash_foreach_ensure_rollback);