Frame-onStep-async-gc-01.js

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// An onStep handler on a suspended async function frame keeps a Debugger alive.

let g = newGlobal({newCompartment: true});

g.eval(`

  async function f() {

    debugger;

    await Promise.resolve(0);

    return 'ok';

`);

let dbg = Debugger(g);

let hit = false;

dbg.onDebuggerStatement = frame => {

    frame.onPop = completion => {

        frame.onStep = () => { hit = true; };

        frame.onPop = undefined;

};

    dbg.onDebuggerStatement = undefined;

    dbg = null;

};

g.f();

assertEq(dbg, null);

gc();

assertEq(hit, false);

drainJobQueue();

assertEq(hit, true);