library test;
import self as self;
import "dart:core" as core;

class C extends core::Object {
  constructor •(core::Object o) → void
    : assert(o as{TypeError} core::bool), super core::Object::•()
    ;
}
static method main() → dynamic {
  core::Object o = 1;
  try {
    new self::C::•(o);
    assert(false, "no exception");
  }
  on core::TypeError catch(no-exception-var) {
  }
}