Yeild() just started to cause me a problem

Projects Interfacing w/ Software on the Computer
10

The optimizer might get rid of it as Serial bool operator overload returns true always

➜ https://github.com/arduino/ArduinoCore-avr/blob/0d4f175a868e3cb8046dc69632443d28f3a85db9/cores/arduino/HardwareSerial.h#L135

operator bool() { return true; }