Use of char arrays (C strings) Vs Strings (discussion)

[Whandall]

@drmpf

Happy to see an example sketch that illustrates a problem

@sud_shenoy

void readSerialPort() {
  msg = "";
  if (Serial.available()) {
    delay(10);
    while (Serial.available() > 0) {
      msg += (char)Serial.read();
    }
    Serial.flush();
  }
}

A global String gets concatenated unlimited.