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-rw-r--r--coverage/ctracer/tracer.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/coverage/ctracer/tracer.c b/coverage/ctracer/tracer.c
index 8abb60a7..a5173270 100644
--- a/coverage/ctracer/tracer.c
+++ b/coverage/ctracer/tracer.c
@@ -74,6 +74,7 @@ CTracer_init(CTracer *self, PyObject *args_unused, PyObject *kwds_unused)
self->cur_entry.last_line = -1;
self->context = Py_None;
+ Py_INCREF(self->context);
ret = RET_OK;
goto ok;