M4 status LED flashing with no main.py present #447 Initialized stack variable

main.c

@@ -131,6 +131,11 @@ bool start_mp(safe_mode_t safe_mode) {
     #endif
 
     pyexec_result_t result;
+
+    result.return_code = 0;
+    result.exception_type = NULL;
+    result.exception_line = 0;
+
     bool found_main = false;
 
     if (safe_mode != NO_SAFE_MODE) {
@@ -166,9 +171,10 @@ bool start_mp(safe_mode_t safe_mode) {
         if (reload_next_character) {
             return true;
         }
+
         if (serial_connected() && serial_bytes_available()) {
             // Skip REPL if reload was requested.
-            return serial_read() == CHAR_CTRL_D;
+            return (serial_read() == CHAR_CTRL_D);
         }
 
         if (!serial_connected_before_animation && serial_connected()) {

supervisor/shared/rgb_led_status.c

@@ -207,6 +207,7 @@ void prep_rgb_status_animation(const pyexec_result_t* result,
     new_status_color(ALL_DONE);
     status->pattern_start = ticks_ms;
     status->safe_mode = safe_mode;
+    status->found_main = found_main;
     status->total_exception_cycle = 0;
     status->ones = result->exception_line % 10;
     status->ones += status->ones > 0 ? 1 : 0;