new file mode 100644
--- /dev/null
+++ b/layout/generic/crashtests/429981-1.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+<head>
+<style type="text/css">
+
+ body {
+ height: 100px;
+ width: 300pt;
+ -moz-column-width: 100pt;
+ -moz-column-gap: 0;
+ }
+
+ #x {
+ padding: 100px;
+ }
+
+ #overflow {
+ height: 400px;
+ float: left;
+ }
+
+</style>
+</head>
+
+<body><div id="x"><div id="overflow"></div>K</div></body>
+
+</html>
--- a/layout/generic/crashtests/crashtests.list
+++ b/layout/generic/crashtests/crashtests.list
@@ -140,10 +140,11 @@ load 416264-1.html
load 416476-1.html
load 418532-1.html
load 421404-1.html
load 422283-1.html
load 422301-1.html
load 423055-1.html
load 425253-1.html
load 426272-1.html
+load 429981-1.html
load 430352-1.html
load 448903-1.html
