Should raise LocalJumpError when no block given

src/vm.c

@@ -1732,6 +1732,10 @@ RETRY_TRY_BLOCK:
         }
         stack = e->stack + 1;
       }
+      if (mrb_nil_p(stack[m1+r+m2])) {
+        localjump_error(mrb, LOCALJUMP_ERROR_YIELD);
+        goto L_RAISE;
+      }
       regs[a] = stack[m1+r+m2];
       NEXT;
     }

test/t/syntax.rb

@@ -38,6 +38,13 @@ assert('yield', '11.3.5') do
   assert_raise LocalJumpError do
     yield
   end
+  assert_raise LocalJumpError do
+    o = Object.new
+    def o.foo
+      yield
+    end
+    o.foo
+  end
 end
 
 assert('Abbreviated variable assignment', '11.4.2.3.2') do