<!DOCTYPE HTML> <html><head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <title>Testcase for bug 529670</title> <script> function boom() { document.createRange().getClientRects() document.createRange().getBoundingClientRect() var range = document.createRange(); range.detach(); range.getClientRects() range.getBoundingClientRect() } </script> </head> <body onload="boom()"></body> </html>