Directly assigning a value to a String causes a compilation error

[sunnyguhz]

The following expression compiles successfully in the older 2.X.X versions, but triggers a compilation error in the latest 3.0.0 version.

Win11 25H2
Arduino 2.3.10
Debug symbols and core logs:"None"
Optimize:"Smallest (-OS) with LTO"
Board part number:"Generic G030F6Px"
U(S)ART support:"Enabled (generic ‘Serial’)"
"Optimize for debug" is not checked.

void setup() {
  // put your setup code here, to run once:
}

void loop() {
  String LCDshowinfo;
  LCDshowinfo = 60 * 60;
}

[fpistm]

Hi @sunnyguhz
There is no error. Since we movedd to official ArduinoCore-API, String intentionally doesn't support implicit numeric assignment.
This is to prevent any conversion which would silently turn numeric bugs.
Correct code is:
String LCDshowinfo = String(60 * 60);