compile.c: unnamed keyword rest check

* compile.c (iseq_set_arguments): set arg_keyword_check from
  nd_cflag, which is set by parser.  internal ID is used for
  unnamed keyword rest argument, which should be separated from no
  keyword check.
* iseq.c (rb_iseq_parameters): if no keyword check, keyword rest is
  present.
* parse.y (new_args_tail_gen): set keywords check to nd_cflag, which
  equals to that keyword rest is not present.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44420 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 1 deletions

diff --git a/parse.y b/parse.y
index d04cf45612..a55f8d7a5c 100644
--- a/parse.y
+++ b/parse.y
@@ -9485,6 +9485,7 @@ new_args_tail_gen(struct parser_params *parser, NODE *k, ID kr, ID b)
     struct rb_args_info *args;
     NODE *kw_rest_arg = 0;
     NODE *node;
+    int check = 0;
 
     args = ALLOC(struct rb_args_info);
     MEMZERO(args, struct rb_args_info, 1);
@@ -9492,10 +9493,14 @@ new_args_tail_gen(struct parser_params *parser, NODE *k, ID kr, ID b)
 
     args->block_arg      = b;
     args->kw_args        = k;
-    if (k && !kr) kr = internal_id();
+    if (k && !kr) {
+	check = 1;
+	kr = internal_id();
+    }
     if (kr) {
 	arg_var(kr);
 	kw_rest_arg  = NEW_DVAR(kr);
+	kw_rest_arg->nd_cflag = check;
     }
     args->kw_rest_arg    = kw_rest_arg;