From abe2caf6df4cc98e540d9c05b4f2bce14cdedfa4 Mon Sep 17 00:00:00 2001
From: Damien George
Date: Fri, 7 Feb 2020 12:30:55 +1100
Subject: py/scheduler: Move clearing of kbd traceback to
 mp_keyboard_interrupt.

This is a more logical place to clear the KeyboardInterrupt traceback,
right before it is set as a pending exception.  The clearing is also
optimised from a function call to a simple store of NULL.
---
 py/scheduler.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'py')

diff --git a/py/scheduler.c b/py/scheduler.c
index ca91e42da..eccd9f91b 100644
--- a/py/scheduler.c
+++ b/py/scheduler.c
@@ -29,7 +29,9 @@
 #include "py/runtime.h"
 
 #if MICROPY_KBD_EXCEPTION
+// This function may be called asynchronously at any time so only do the bare minimum.
 void MICROPY_WRAP_MP_KEYBOARD_INTERRUPT(mp_keyboard_interrupt)(void) {
+    MP_STATE_VM(mp_kbd_exception).traceback_data = NULL;
     MP_STATE_VM(mp_pending_exception) = MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception));
     #if MICROPY_ENABLE_SCHEDULER
     if (MP_STATE_VM(sched_state) == MP_SCHED_IDLE) {
-- 
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