Issue #5635: Fix running test_sys with tracing enabled.
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index a4554a6..afeaf25 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -221,6 +221,11 @@
sys.setdlopenflags(oldflags)
def test_refcount(self):
+ # n here must be a global in order for this test to pass while
+ # tracing with a python function. Tracing calls PyFrame_FastToLocals
+ # which will add a copy of any locals to the frame object, causing
+ # the reference count to increase by 2 instead of 1.
+ global n
self.assertRaises(TypeError, sys.getrefcount)
c = sys.getrefcount(None)
n = None