<!-- webkit-test-runner [ dumpJSConsoleLogInStdErr=true ] -->
<script>
    if (window.testRunner) {
        testRunner.dumpAsText();
        testRunner.waitUntilDone();
  }
  onload = () => {
    function run() {
      try {
        let cssStyleValue = CSSMathValue.parseAll('columns', 'auto')[0];
        document.body.attributeStyleMap.append('grid-auto-columns', cssStyleValue);
      } finally {
        if (window.testRunner)
          testRunner.notifyDone();
      }
    }
    setTimeout(run, 20);
  };
</script>
<div>This test should not crash</div>