979         if (tstate->c_tracefunc != NULL) {  in PyEval_EvalFrameEx()
993             if (call_trace_protected(tstate->c_tracefunc,  in PyEval_EvalFrameEx()
1144             tstate->c_tracefunc != NULL && !tstate->tracing) {  in PyEval_EvalFrameEx()
1149             err = maybe_call_line_trace(tstate->c_tracefunc,  in PyEval_EvalFrameEx()
3196             if (tstate->c_tracefunc != NULL)  in PyEval_EvalFrameEx()
3197                 call_exc_trace(tstate->c_tracefunc,  in PyEval_EvalFrameEx()
3296         if (tstate->c_tracefunc) {  in PyEval_EvalFrameEx()
3298                 if (call_trace(tstate->c_tracefunc,  in PyEval_EvalFrameEx()
3307                 call_trace_protected(tstate->c_tracefunc,  in PyEval_EvalFrameEx()
4024     tstate->use_tracing = ((tstate->c_tracefunc != NULL)  in call_trace()
4040     tstate->use_tracing = ((tstate->c_tracefunc != NULL)  in _PyEval_CallTracing()
4087     tstate->use_tracing = tstate->c_tracefunc != NULL;  in PyEval_SetProfile()
4092     tstate->use_tracing = (func != NULL) || (tstate->c_tracefunc != NULL);  in PyEval_SetProfile()
4100     _Py_TracingPossible += (func != NULL) - (tstate->c_tracefunc != NULL);  in PyEval_SetTrace()
4102     tstate->c_tracefunc = NULL;  in PyEval_SetTrace()
4107     tstate->c_tracefunc = func;  in PyEval_SetTrace()