a little more fiddling to make flags like 2.x
diff --git a/Include/code.h b/Include/code.h
index 3ab5bc7..efaf3c4 100644
--- a/Include/code.h
+++ b/Include/code.h
@@ -43,7 +43,9 @@
#define CO_NOFREE 0x0040
/* These are no longer used. */
+#if 0
#define CO_GENERATOR_ALLOWED 0x1000
+#endif
#define CO_FUTURE_DIVISION 0x2000
#define CO_FUTURE_ABSOLUTE_IMPORT 0x4000 /* do absolute imports by default */
#define CO_FUTURE_WITH_STATEMENT 0x8000
diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index 28e1690..09d3ee5 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -10,7 +10,7 @@
#define PyCF_MASK (CO_FUTURE_DIVISION | CO_FUTURE_ABSOLUTE_IMPORT | \
CO_FUTURE_WITH_STATEMENT | CO_FUTURE_PRINT_FUNCTION | \
CO_FUTURE_UNICODE_LITERALS | CO_FUTURE_BARRY_AS_BDFL)
-#define PyCF_MASK_OBSOLETE 0
+#define PyCF_MASK_OBSOLETE (CO_NESTED)
#define PyCF_SOURCE_IS_UTF8 0x0100
#define PyCF_DONT_IMPLY_DEDENT 0x0200
#define PyCF_ONLY_AST 0x0400