1 files changed, 2 insertions, 0 deletions
diff --git a/Python/pystate.c b/Python/pystate.c
index 4a3cb24a..a94a615 100644
--- a/Python/pystate.c
+++ b/Python/pystate.c
@@ -688,6 +688,8 @@ new_threadstate(PyInterpreterState *interp, int init)
     /* If top points to entry 0, then _PyThreadState_PopLocals will try to pop this chunk */
     tstate->datastack_top = &tstate->datastack_chunk->data[1];
     tstate->datastack_limit = (PyObject **)(((char *)tstate->datastack_chunk) + DATA_STACK_CHUNK_SIZE);
+    /* Mark trace_info as uninitialized */
+    tstate->trace_info.code = NULL;
 
     if (init) {
         _PyThreadState_Init(tstate);