<!DOCTYPE html>
<html>
<head>
<script>
if (window.testRunner)
  window.testRunner.dumpAsText();
</script>
</head>
<body>
<h1>Linear gradient with no comma between positions. No crash means SUCCESS.</h1>
<button style="border-image-source: radial-gradient(ellipse at left left)">
</body>
</html>