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function main() {
class Base {}
class Derived extends Base {
constructor() {
let v = 0xffff;
try {
// Ensure this statement doesn't get DCE'ed.
v &= 0xff;
// Accessing |this| throws when |super()| wasn't yet called.
this;
} catch {}
assertEq(v, 255);
super();
}
}
for (let i = 0; i < 15; i++) {
new Derived();
}
}
main();
main();