diff --git a/mozilla/layout/generic/crashtests/416264-1.html b/mozilla/layout/generic/crashtests/416264-1.html
new file mode 100644
index 00000000000..783920e9f6c
--- /dev/null
+++ b/mozilla/layout/generic/crashtests/416264-1.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+<head>
+</head>
+
+<body style="display: -moz-box;"><div style="-moz-column-count: 2;"><div style="height: 200px;"></div><span style="display: inline-block; width: 100px;"></span></div></body>
+
+</html>
diff --git a/mozilla/layout/generic/crashtests/crashtests.list b/mozilla/layout/generic/crashtests/crashtests.list
index 00050b42cfa..c9ced856b47 100644
--- a/mozilla/layout/generic/crashtests/crashtests.list
+++ b/mozilla/layout/generic/crashtests/crashtests.list
@@ -130,5 +130,6 @@ load 412201-1.xhtml
 load 414061-1.html
 load 414719-1.html
 load 415685-1.html
+load 416264-1.html
 load 421404-1.html
 load 425253-1.html
diff --git a/mozilla/layout/xul/base/src/crashtests/412479-1.xhtml b/mozilla/layout/xul/base/src/crashtests/412479-1.xhtml
new file mode 100644
index 00000000000..b1086a816ee
--- /dev/null
+++ b/mozilla/layout/xul/base/src/crashtests/412479-1.xhtml
@@ -0,0 +1,4 @@
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+<head></head>
+<body><xul:menubar style="display: table-column; padding: 10px 3000px;"/></body>
+</html>
diff --git a/mozilla/layout/xul/base/src/crashtests/crashtests.list b/mozilla/layout/xul/base/src/crashtests/crashtests.list
index 26024601295..485e7218531 100644
--- a/mozilla/layout/xul/base/src/crashtests/crashtests.list
+++ b/mozilla/layout/xul/base/src/crashtests/crashtests.list
@@ -23,3 +23,4 @@ load 397304-1.html
 load 398326-1.xhtml
 load 402912-1.xhtml
 load 408904-1.xul
+load 412479-1.xhtml
