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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-68988] Coverity analysis defect 122770: AUTO_CAUSES_COPY</title>
                <link>https://jira.mongodb.org/browse/SERVER-68988</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;AUTO_CAUSES_COPY&lt;/p&gt;

&lt;p&gt; Unnecessary object copies can affect performance. Using the auto keyword without an &amp;amp; causes a copy.&lt;br/&gt;
/src/mongo/db/pipeline/document_source_queue.cpp:47: AUTO_CAUSES_COPY 122770 Using the &quot;auto&quot; keyword without an &quot;&amp;amp;&quot; causes the copy of an object of type BSONElement.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2117984">SERVER-68988</key>
            <summary>Coverity analysis defect 122770: AUTO_CAUSES_COPY</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="4" iconUrl="https://jira.mongodb.org/images/icons/priorities/minor.svg">Minor - P4</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="amr.elhelw@mongodb.com">Amr Elhelw</assignee>
                                    <reporter username="xgen-internal-coverity">Coverity Collector User</reporter>
                        <labels>
                            <label>coverity</label>
                            <label>neweng</label>
                    </labels>
                <created>Fri, 19 Aug 2022 14:50:23 +0000</created>
                <updated>Sun, 29 Oct 2023 21:34:15 +0000</updated>
                            <resolved>Tue, 14 Mar 2023 17:13:28 +0000</resolved>
                                                    <fixVersion>7.0.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="5269704" author="xgen-internal-githook" created="Tue, 14 Mar 2023 01:11:20 +0000"  >&lt;p&gt;Author: &lt;/p&gt;
{&apos;name&apos;: &apos;Amr Elhelw&apos;, &apos;email&apos;: &apos;amr.elhelw@mongodb.com&apos;, &apos;username&apos;: &apos;aelhelw&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-68988&quot; title=&quot;Coverity analysis defect 122770: AUTO_CAUSES_COPY&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-68988&quot;&gt;&lt;del&gt;SERVER-68988&lt;/del&gt;&lt;/a&gt; Avoid creating copies with auto&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2d24e77b9576d0b2f4320810f22c2b81abaaf57f&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2d24e77b9576d0b2f4320810f22c2b81abaaf57f&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4798288" author="kyle.suarez" created="Fri, 2 Sep 2022 15:26:17 +0000"  >&lt;p&gt;After taking a closer look, we can omit doing CID 122770: we are iterating over BSONElements, and it&apos;s efficient to copy them. (They are 16 bytes and therefore are passed via register in all architectures we care about.) I have deleted the screenshot with this CID.&lt;/p&gt;

&lt;p&gt;It would still be nice to do CID 123199 as I think we could benefit from not coping the &lt;tt&gt;GetNextResult&lt;/tt&gt;.&lt;/p&gt;</comment>
                            <comment id="4798205" author="JIRAUSER1257467" created="Fri, 2 Sep 2022 15:03:15 +0000"  >&lt;p&gt;Not urgent - but please do if you have time&lt;/p&gt;</comment>
                            <comment id="4763568" author="kyle.suarez" created="Fri, 19 Aug 2022 15:23:34 +0000"  >&lt;p&gt;There were multiple AUTO_CAUSES_COPY violations filed so whoever takes this, please sweep through the file.&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="396905" name="Screen Shot 2022-08-19 at 11.22.41 AM.png" size="48854" author="kyle.suarez@mongodb.com" created="Fri, 19 Aug 2022 15:23:15 +0000"/>
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