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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [Win] Enable IndexedDB."
   href="https://bugs.webkit.org/show_bug.cgi?id=157192#c6">Comment # 6</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [Win] Enable IndexedDB."
   href="https://bugs.webkit.org/show_bug.cgi?id=157192">bug 157192</a>
              from <span class="vcard"><a class="email" href="mailto:peavo&#64;outlook.com" title="peavo&#64;outlook.com">peavo&#64;outlook.com</a>
</span></b>
        <pre>(In reply to <a href="show_bug.cgi?id=157192#c5">comment #5</a>)
<span class="quote">&gt; (In reply to <a href="show_bug.cgi?id=157192#c2">comment #2</a>)
&gt; &gt; This patch needs VS2015 Update 2 to compile.
&gt; What exactly needs update 2?  What happens if you compile without it?</span >

I get a compile error in the method UniqueIDBDatabase::activateTransactionInBackingStore.

error C2668: 'WebCore::IDBServer::UniqueIDBDatabase::storeCallback': ambiguous call to overloaded function

void UniqueIDBDatabase::activateTransactionInBackingStore(UniqueIDBDatabaseTransaction&amp; transaction)
{
    LOG(IndexedDB, &quot;(main) UniqueIDBDatabase::activateTransactionInBackingStore&quot;);

    RefPtr&lt;UniqueIDBDatabase&gt; self(this);
    RefPtr&lt;UniqueIDBDatabaseTransaction&gt; refTransaction(&amp;transaction);

    auto callback = [this, self, refTransaction](const IDBError&amp; error) {
        refTransaction-&gt;didActivateInBackingStore(error);
    };

    uint64_t callbackID = storeCallback(callback);
    m_server.postDatabaseTask(createCrossThreadTask(*this, &amp;UniqueIDBDatabase::performActivateTransactionInBackingStore, callbackID, transaction.info()));
}</pre>
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