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-rw-r--r--dom/svg/test/tearoff_with_cc_helper.html36
1 files changed, 36 insertions, 0 deletions
diff --git a/dom/svg/test/tearoff_with_cc_helper.html b/dom/svg/test/tearoff_with_cc_helper.html
new file mode 100644
index 0000000000..6d63e939fe
--- /dev/null
+++ b/dom/svg/test/tearoff_with_cc_helper.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html>
+<body onload="go()">
+ <svg id="outerSvg" width="50%" height="50%"
+ style="border: 1px solid black">
+ </svg>
+ <script type="application/javascript">
+ /* I'm not sure what exactly was required to trigger bug 1288228's crash,
+ * but it involved tweaking a length's specified units and cycle-collecting
+ * and reloading (in some combination). So, we'll tweak the units and
+ * cycle-collect a few times, and message the outer page to reload us
+ * after we've made the first tweak.
+ */
+ const maxTweaks = 5;
+ let remainingTweaks = maxTweaks;
+
+ var savedBaseVal = document.getElementById("outerSvg").width.baseVal;
+ function go() {
+ window.parent.SpecialPowers.DOMWindowUtils.cycleCollect();
+ tweak();
+ }
+
+ function tweak() {
+ console.log("tweaked");
+ savedBaseVal.convertToSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_PX);
+ savedBaseVal.convertToSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_PERCENTAGE);
+ if (remainingTweaks == maxTweaks) {
+ window.parent.postMessage("ping", "*"); // only do this on first tweak
+ }
+ if (--remainingTweaks) {
+ setTimeout(tweak, 0);
+ }
+ }
+</script>
+</body>
+</html>