Bug 1693620 [wpt PR 27684] - Avoid DCHECK in HTMLSelectElement::SetOption, a=testonly

Automatic update from web-platform-tests Avoid DCHECK in HTMLSelectElement::SetOption SetOption adds a new <option>, but in some unusual cases, the <option> can be a parent of the <select> which it is getting added to, which prevents the <option> from being appended to the <select>. This adds a check to the ExceptionState which reflects the failure to append instead of continuing on assuming that the <option> was successfully appended. Fixed: 1178128 Change-Id: Ibfc04c2d4eb672fa2d7695855ffd8ca3d773337b Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2704645 Reviewed-by: Mason Freed <masonfreed@chromium.org> Commit-Queue: Joey Arhar <jarhar@chromium.org> Cr-Commit-Position: refs/heads/master@{#855411} -- wpt-commits: 9b7fac08b053897d5b60337ffd9811c9d380e3a3 wpt-pr: 27684
2021-02-22 21:48:46 +00:00 · 2021-02-22 21:48:46 +00:00 · 09ad907867
--- a/testing/web-platform/tests/html/semantics/forms/the-select-element/select-add-option-crash.html
+++ b/testing/web-platform/tests/html/semantics/forms/the-select-element/select-add-option-crash.html
@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<link rel=author href="mailto:jarhar@chromium.org">
+<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1178128">
+
+<script>
+function iframeloadhandler() {
+  selectid[5] = optionid;
+}
+</script>
+<option id="optionid" selected>
+  <select id="selectid">
+    <select>
+      <iframe onload="iframeloadhandler()">