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py/runtime: Initialize profile fields in mp_thread_init_state.

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If the fields added for `MICROPY_PY_SYS_SETTRACE` are not initialized
properly, their value in a thread is indeterminate.  In particular, if the
callback is not NULL, it will be invoked as a function.

Signed-off-by: Jeff Epler <jepler@gmail.com>
This commit is contained in:
Jeff Epler
2025-06-21 08:24:21 +02:00
committed by Damien George
parent ff8c4e5943
commit f04475afd8
1 changed files with 6 additions and 0 deletions
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6
py/runtime.h
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@@ -169,6 +169,12 @@ static inline void mp_thread_init_state(mp_state_thread_t *ts, size_t stack_size
ts->nlr_jump_callback_top = NULL;
ts->mp_pending_exception = MP_OBJ_NULL;
#if MICROPY_PY_SYS_SETTRACE
ts->prof_trace_callback = MP_OBJ_NULL;
ts->prof_callback_is_executing = false;
ts->current_code_state = NULL;
#endif
// If locals/globals are not given, inherit from main thread
if (locals == NULL) {
locals = mp_state_ctx.thread.dict_locals;