Add a nullcheck to the tone_timer_callback function

rowingdude · web-flow · commit b9ab2f11a018 · 2024-08-12T09:30:07.000-04:00
diff --git a/cores/arduino/Tone.cpp b/cores/arduino/Tone.cpp
@@ -73,7 +73,9 @@ int Tone::channel = -1;
 static Tone* active_tone = nullptr;
 
 void tone_timer_callback(timer_callback_args_t __attribute__((unused)) *args) {
-    active_tone->toggle();
+    if (active_tone) {
+        active_tone->toggle();
+    }
 }
 
 void tone(pin_size_t pin, unsigned int frequency, unsigned long duration = 0) {

Original file line number	Diff line number	Diff line change
`@@ -73,7 +73,9 @@ int Tone::channel = -1;`
`73`	`73`	`static Tone* active_tone = nullptr;`
`74`	`74`
`75`	`75`	`void tone_timer_callback(timer_callback_args_t __attribute__((unused)) *args) {`
`76`		`- active_tone->toggle();`
	`76`	`+ if (active_tone) {`
	`77`	`+ active_tone->toggle();`
	`78`	`+ }`
`77`	`79`	`}`
`78`	`80`
`79`	`81`	`void tone(pin_size_t pin, unsigned int frequency, unsigned long duration = 0) {`