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-rw-r--r--coverage/ctracer/tracer.c7
-rw-r--r--coverage/ctracer/util.h8
2 files changed, 12 insertions, 3 deletions
diff --git a/coverage/ctracer/tracer.c b/coverage/ctracer/tracer.c
index ee112d83..095df11a 100644
--- a/coverage/ctracer/tracer.c
+++ b/coverage/ctracer/tracer.c
@@ -529,9 +529,6 @@ CTracer_handle_call(CTracer *self, PyFrameObject *frame)
self->pcur_entry->file_data = file_data;
self->pcur_entry->file_tracer = file_tracer;
- /* Make the frame right in case settrace(gettrace()) happens. */
- Py_INCREF(self);
- frame->f_trace = (PyObject*)self;
SHOWLOG(self->pdata_stack->depth, frame->f_lineno, filename, "traced");
}
else {
@@ -543,6 +540,10 @@ CTracer_handle_call(CTracer *self, PyFrameObject *frame)
self->pcur_entry->disposition = disposition;
+ /* Make the frame right in case settrace(gettrace()) happens. */
+ Py_INCREF(self);
+ My_XSETREF(frame->f_trace, (PyObject*)self);
+
/* A call event is really a "start frame" event, and can happen for
* re-entering a generator also. f_lasti is -1 for a true call, and a
* real byte offset for a generator re-entry.
diff --git a/coverage/ctracer/util.h b/coverage/ctracer/util.h
index e192f977..f0c302cf 100644
--- a/coverage/ctracer/util.h
+++ b/coverage/ctracer/util.h
@@ -44,6 +44,14 @@
#endif /* Py3k */
+// Undocumented, and not in 2.6, so our own copy of it.
+#define My_XSETREF(op, op2) \
+ do { \
+ PyObject *_py_tmp = (PyObject *)(op); \
+ (op) = (op2); \
+ Py_XDECREF(_py_tmp); \
+ } while (0)
+
/* The values returned to indicate ok or error. */
#define RET_OK 0
#define RET_ERROR -1