bug 374102 - crash test by Martijn Wargers.

layout/xul/base/src/crashtests/374102-1.xul

@@ -0,0 +1,5 @@
+<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+<tabpanels>
+<treechildren style="display: -moz-deck;"/>
+</tabpanels>
+</window>

layout/xul/base/src/crashtests/crashtests.list

@@ -24,6 +24,7 @@ load 346281-1.xul
 load 360642-1.xul
 load 366112-1.xul
 load 369942-1.xhtml
+load 374102-1.xul
 load 377592-1.svg
 load 382746-1.xul
 load 382899-1.xul