1 files changed, 41 insertions, 0 deletions
diff --git a/layout/reftests/display-list/retained-dl-zindex-2.html b/layout/reftests/display-list/retained-dl-zindex-2.html
new file mode 100644
index 0000000000..db3b6e75b6
--- /dev/null
+++ b/layout/reftests/display-list/retained-dl-zindex-2.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<head>
+<style>
+div {
+  width: 200px;
+  height: 200px;
+  position:relative;
+  will-change:transform;
+}
+#one {
+  top:120px;
+  background-color:blue;
+}
+#two {
+  top: -200px;
+  left: 100px;
+  background-color:green;
+}
+#three {
+  top: -180px;
+  left: 100px;
+  background-color:red;
+  z-index: 1;
+}
+</style>
+</head>
+<body>
+  <div id="one"></div>
+  <div id="two"></div>
+  <div id="three"></div>
+</body>
+<script>
+function doTest() {
+  document.getElementById("three").style.zIndex = -1;
+  document.documentElement.removeAttribute("class");
+}
+
+window.addEventListener("MozReftestInvalidate", doTest);
+</script>
+</html>