1 files changed, 4 insertions, 0 deletions
diff --git a/test/t/syntax.rb b/test/t/syntax.rb
index 245c5c099..83243a99f 100644
--- a/test/t/syntax.rb
+++ b/test/t/syntax.rb
@@ -289,3 +289,7 @@ assert('optional argument in the rhs default expressions') do
   assert_nil(o.t)
   assert_equal("method called", o.t2)
 end
+
+assert('optional block argument in the rhs default expressions') do
+  assert_nil(proc {|foo = foo| foo}.call)
+end