new file mode 100644
--- /dev/null
+++ b/layout/base/crashtests/428113.xhtml
@@ -0,0 +1,2 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<listbox xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" style="float: right;"><listitem/><listitem/><listitem/><listitem/><listitem/><listitem label="foo"/><listitem style="position: absolute;"/></listbox></html>
--- a/layout/base/crashtests/crashtests.list
+++ b/layout/base/crashtests/crashtests.list
@@ -232,16 +232,17 @@ load 420031-1.html
load 420213-1.html
load 420219-1.html
load 420651-1.xhtml
load 421203-1.xul
asserts(0-1) load 421432.html # bug 844525
load 422276.html
load 423107-1.xhtml
load 425981-1.html
+load 428113.xhtml
load 428138-1.html
load 428448-1.html
load 429088-1.html
load 429088-2.html
load 429780-1.xhtml
load 429865-1.html
load 430569-1.html
load 430569-2.html
