PEP 479: Change StopIteration handling inside generators.
Closes issue #22906.
diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index 1d9b71b..f92148d 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -9,7 +9,8 @@
#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)
+ CO_FUTURE_UNICODE_LITERALS | CO_FUTURE_BARRY_AS_BDFL | \
+ CO_FUTURE_GENERATOR_STOP)
#define PyCF_MASK_OBSOLETE (CO_NESTED)
#define PyCF_SOURCE_IS_UTF8 0x0100
#define PyCF_DONT_IMPLY_DEDENT 0x0200