The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/debug/Environment-gc-02.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,28 @@
     1.4 +// A closure's .environment keeps the lexical environment alive even if the closure is destroyed.
     1.5 +
     1.6 +var N = 4;
     1.7 +var g = newGlobal();
     1.8 +g.eval("function add(a) { return function (b) { return eval('a + b'); }; }");
     1.9 +var dbg = new Debugger;
    1.10 +var gw = dbg.addDebuggee(g);
    1.11 +var aw = gw.getOwnPropertyDescriptor("add").value;
    1.12 +
    1.13 +// Create N closures and collect environments.
    1.14 +var arr = [];
    1.15 +for (var i = 0; i < N; i++)
    1.16 +    arr[i] = aw.call(null, i).return.environment;
    1.17 +
    1.18 +// Test that they work now.
    1.19 +function check() {
    1.20 +    for (var i = 0; i < N; i++) {
    1.21 +        assertEq(arr[i].find("b"), null);
    1.22 +        assertEq(arr[i].find("a"), arr[i]);
    1.23 +    }
    1.24 +}
    1.25 +check();
    1.26 +
    1.27 +// Test that they work after gc.
    1.28 +gc();
    1.29 +gc({});
    1.30 +g.gc(g);
    1.31 +check();