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/Frame-eval-14.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,25 @@
     1.4 +// Test the corner case of accessing an unaliased variable of a block
     1.5 +// while the block is not live.
     1.6 +
     1.7 +var g = newGlobal();
     1.8 +g.eval("function h() { debugger }");
     1.9 +g.eval("function f() { let (x = 1, y) { (function() { y = 0 })(); h() } }");
    1.10 +g.eval("var surprise = null");
    1.11 +
    1.12 +var dbg = new Debugger(g);
    1.13 +dbg.onDebuggerStatement = function(hFrame) {
    1.14 +    var fFrame = hFrame.older;
    1.15 +    assertEq(fFrame.environment.getVariable('x'), 1);
    1.16 +    assertEq(fFrame.environment.getVariable('y'), 0);
    1.17 +    fFrame.eval("surprise = function() { return ++x }");
    1.18 +    assertEq(g.surprise(), 2);
    1.19 +}
    1.20 +g.f();
    1.21 +assertEq(g.surprise !== null, true);
    1.22 +
    1.23 +// Either succeed or throw an error about 'x' not being live
    1.24 +try {
    1.25 +    assertEq(g.surprise(), 3);
    1.26 +} catch (e) {
    1.27 +    assertEq(e+'', 'Error: x is not live');
    1.28 +}