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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - A null compound index value breaks Safari &gt;= 10.1 (and iOS 10.3 beta)"
   href="https://bugs.webkit.org/show_bug.cgi?id=170000#c5">Comment # 5</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - A null compound index value breaks Safari &gt;= 10.1 (and iOS 10.3 beta)"
   href="https://bugs.webkit.org/show_bug.cgi?id=170000">bug 170000</a>
              from <span class="vcard"><a class="email" href="mailto:beidson&#64;apple.com" title="Brady Eidson &lt;beidson&#64;apple.com&gt;"> <span class="fn">Brady Eidson</span></a>
</span></b>
        <pre>Being asked to serialize an Invalid key, which should never happen.

1   0x12240e2fd WTFCrash
2   0x117151148 WebCore::serializedTypeForKeyType(WebCore::IndexedDB::KeyType)
3   0x11714ffa2 WebCore::encodeKey(WTF::Vector&lt;char, 0ul, WTF::CrashOnOverflow, 16ul&gt;&amp;, WebCore::IDBKeyData const&amp;)
4   0x11715025e WebCore::encodeKey(WTF::Vector&lt;char, 0ul, WTF::CrashOnOverflow, 16ul&gt;&amp;, WebCore::IDBKeyData const&amp;)
5   0x11714ff40 WebCore::serializeIDBKeyData(WebCore::IDBKeyData const&amp;)
….

    case IndexedDB::KeyType::Invalid:
        RELEASE_ASSERT_NOT_REACHED();    &lt;----</pre>
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