LayoutTests/fast/css/css-fontface-rule-crash.html

   1 <html>
   2 <head>
   3 <script src="../../resources/gc.js"></script>
   4 <script>
   5 if (window.layoutTestController) {
   6     layoutTestController.dumpAsText();
   7     layoutTestController.waitUntilDone();
   8 }
   9
  10 function load()
  11 {
  12     style = document.createElement('style');
  13     style.textContent = '@font-face { font-family: "A"; }';
  14     document.head.appendChild(style);
  15     rulestyle = document.styleSheets[0].cssRules[0].style;
  16     document.head.removeChild(style);
  17     style = null;
  18     setTimeout(crash, 0);
  19 }
  20
  21 function crash()
  22 {
  23     gc();
  24     obj = rulestyle.parentRule;
  25     // If the gc() actually successfully reaps everything it can, then obj
  26     // will end up null (post-fix). gc() is not guaranteed to reap the font-face
  27     // rule, however, particularly in the browser context.
  28     if (obj)
  29         obj = obj.foo;
  30     document.body.innerText = 'PASS';
  31     if (window.layoutTestController)
  32         layoutTestController.notifyDone()
  33 }
  34 </script>
  35 </head>
  36 <body onload="load()"></body>
  37 </html>