Resync yarp (#8498)

* [YARP] Reject numbered parameters in block parameters

* [YARP] Do not allow BEGIN except the toplevel

---------

Co-authored-by: Haldun Bayhantopcu <haldun@github.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/test/yarp/errors_test.rb b/test/yarp/errors_test.rb
index d152c7cfc0..3f621b1c56 100644
--- a/test/yarp/errors_test.rb
+++ b/test/yarp/errors_test.rb
@@ -1302,6 +1302,20 @@ module YARP
       assert_error_messages "%sXfooX", error_messages
     end
 
+    def test_begin_at_toplevel
+      source = "def foo; BEGIN {}; end"
+      assert_errors expression(source), source, [
+        ["BEGIN is permitted only at toplevel", 9..14],
+      ]
+    end
+
+    def test_numbered_parameters_in_block_arguments
+      source = "foo { |_1| }"
+      assert_errors expression(source), source, [
+        ["Token reserved for a numbered parameter", 7..9],
+      ]
+    end
+
     def test_conditional_predicate_closed
       source = "if 0 0; end\nunless 0 0; end"
       assert_errors expression(source), source, [