<!DOCTYPE html>
<html>
<head>
<style>
grid {
  display: grid;
  grid-template: "test" 100px / 100px;
  grid-template-rows: subgrid;
}
</style>
</head>
<body>
Test passes if no crash.
<grid></grid>
</body>
<script>
  if (window.testRunner)
    testRunner.dumpAsText();

  document.styleSheets[0].cssRules[0].cssText
</script>
</html>