diff --git a/layout/generic/crashtests/373868-1.xhtml b/layout/generic/crashtests/373868-1.xhtml
new file mode 100644
index 000000000000..712569386b6c
--- /dev/null
+++ b/layout/generic/crashtests/373868-1.xhtml
@@ -0,0 +1,19 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+</head>
+
+<body>
+<span style="float: left; height: 18000000px"/>
+<p style="clear: left;"/>
+<div>
+  <span style="float: right; height: 100px;">a</span>
+  b
+  <span style="float: right; height: 18000000px;"/>
+  <p/>
+  <span style="float: right; height: 18000000px;">c</span>
+  <table style="height: 20000000px;"/>
+  <p style="float: right;"/>
+</div>
+</body>
+
+</html>
diff --git a/layout/generic/crashtests/crashtests.list b/layout/generic/crashtests/crashtests.list
index 12e43145fcf6..3afb1edc476f 100644
--- a/layout/generic/crashtests/crashtests.list
+++ b/layout/generic/crashtests/crashtests.list
@@ -41,6 +41,7 @@ load 371348-1.xhtml
 load 371566-1.xhtml
 load 372376-1.xhtml
 load 373859-1.html
+load 373868-1.xhtml
 load 382199-1.html
 load 382396-1.xhtml
 load 385265-1.xhtml
