class T {
var a = 1:
var b = 2;
}
It results in the following error message:
BUILD: ERROR: /.../ErrorTermColon.mc:2: mismatched input '
The problem is that the second line ends with a colon instead of a semicolon - which unfortunately was a bit difficult to see on the screen I was using :D
But... the error message wasn't exactly helpful - I guess some of it was cut of or it included a newline?