Environment-gc-02.js

Enable keyboard shortcuts

// A closure's .environment keeps the lexical environment alive even if the closure is destroyed.

var N = 4;

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

g.eval("function add(a) { return function (b) { return eval('a + b'); }; }");

var dbg = new Debugger;

var gw = dbg.addDebuggee(g);

var aw = gw.getOwnPropertyDescriptor("add").value;

// Create N closures and collect environments.

var arr = [];

for (var i = 0; i < N; i++)

    arr[i] = aw.call(null, i).return.environment;

// Test that they work now.

function check() {

    for (var i = 0; i < N; i++) {

        assertEq(arr[i].find("b"), null);

        assertEq(arr[i].find("a"), arr[i]);

check();

// Test that they work after gc.

gc();

gc({});

g.gc(g);

check();