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diff --git a/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-parse-error.html b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-parse-error.html
new file mode 100644
index 000000000..3c21df49c
--- /dev/null
+++ b/testing/web-platform/tests/html/webappapis/scripting/processing-model-2/window-onerror-parse-error.html
@@ -0,0 +1,40 @@
+<!doctype html>
+<html>
+ <head>
+  <title>window.onerror: parse errors</title>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <!--
+
+    In https://html.spec.whatwg.org/multipage/#creating-scripts ,
+    step 3 describes parsing the script, and step 5 says:
+      # Otherwise, report the error using the onerror event handler of
+      # the script's global object. If the error is still not handled
+      # after this, then the error may be reported to the user.
+    which links to
+    https://html.spec.whatwg.org/multipage/#report-the-error ,
+    which describes what to do when onerror is a Function.
+
+    -->
+ </head>
+ <body>
+
+  <div id="log"></div>
+  <script>
+    setup({allow_uncaught_exception:true});
+    var error_count = 0;
+    window.onerror = function(msg, url, lineno) {
+      ++error_count;
+      test(function() {assert_equals(url, window.location.href)},
+           "correct url passed to window.onerror");
+      test(function() {assert_equals(lineno, 34)},
+           "correct line number passed to window.onerror");
+    };
+  </script>
+  <script>This script does not parse correctly.</script>
+  <script>
+  test(function() {assert_equals(error_count, 1)},
+       "correct number of calls to window.onerror");
+  </script>
+ </body>
+</html>