diff --git a/test/simple_source/bug30/01_comprehension.py b/test/simple_source/bug30/01_comprehension.py
new file mode 100644
index 00000000..b185a316
--- /dev/null
+++ b/test/simple_source/bug30/01_comprehension.py
@@ -0,0 +1,9 @@
+# From abc.py
+def __new__(cls, value, bases, namespace):
+    {name
+     for name, value in namespace.items()
+     if getattr(value, "__isabstractmethod__", False)}
+    return
+
+# From base64.py
+_b32rev = dict([(v[0], k) for k, v in __file__])