Describe the problem

The real time diagnostics reports "Unexpected character", but the code compiles with all warnings enabled.

image

To reproduce

void setup() {
 Serial.begin(9600);
}
void loop() {
 Serial.println("😁😒😍🤣😂😊👀✔🤦‍♂️🤦‍♀️🤦‍♀️💕😘👌❤");
}

Expected behavior

Real time diagnostics does not give more errors than compilation.

Arduino IDE version

2.0.4-nightly-20221229

Operating system

Windows

Operating system version

Windows 10 22H2

Additional context

I am working with 10 year old children. Using smileys is something common.

Issue checklist

• I searched for previous reports in the issue tracker
• I verified the problem still occurs when using the latest nightly build
• My report contains all necessary details