[PRISM] Fix crash in anonymous block with forwarding arguments

Fixes ruby/prism#2262.

1 files changed, 10 insertions, 1 deletions

diff --git a/test/ruby/test_compile_prism.rb b/test/ruby/test_compile_prism.rb
index bcbd5449e0..b7aa75a5b0 100644
--- a/test/ruby/test_compile_prism.rb
+++ b/test/ruby/test_compile_prism.rb
@@ -1725,7 +1725,7 @@ end
     def test_BlockArgumentNode
       assert_prism_eval("1.then(&:to_s)")
 
-      # Test forwarding with no name
+      # Test anonymous block forwarding
       assert_prism_eval(<<~RUBY)
         o = Object.new
         def o.foo(&) = yield
@@ -1733,6 +1733,15 @@ end
 
         o.bar { :ok }
       RUBY
+
+      # Test anonymous block forwarding from argument forwarding
+      assert_prism_eval(<<~RUBY)
+        o = Object.new
+        def o.foo = yield
+        def o.bar(...) = foo(&)
+
+        o.bar { :ok }
+      RUBY
     end
 
     def test_BlockLocalVariableNode