`Proc` made by `Symbol#to_proc` should be a lambda [Bug #16260]

With refinements, too.

1 files changed, 1 insertions, 1 deletions

diff --git a/vm_args.c b/vm_args.c
index 13d4e4a545..b3f1611e78 100644
--- a/vm_args.c
+++ b/vm_args.c
@@ -869,7 +869,7 @@ vm_caller_setup_arg_block(const rb_execution_context_t *ec, rb_control_frame_t *
                     rb_ary_push(callback_arg, block_code);
                     rb_ary_push(callback_arg, ref);
                     OBJ_FREEZE_RAW(callback_arg);
-                    func = rb_func_proc_new(refine_sym_proc_call, callback_arg);
+                    func = rb_func_lambda_new(refine_sym_proc_call, callback_arg, 0, UNLIMITED_ARGUMENTS);
 		    rb_hash_aset(ref, block_code, func);
 		}
 		block_code = func;