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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-68787] Coverity analysis defect 122591: AUTO_CAUSES_COPY</title>
                <link>https://jira.mongodb.org/browse/SERVER-68787</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/accumulator_multi.cpp:426: AUTO_CAUSES_COPY 122591 Using the &quot;auto&quot; keyword without an &quot;&amp;amp;&quot; causes the copy of an object of type SortPatternPart.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2112403">SERVER-68787</key>
            <summary>Coverity analysis defect 122591: 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="13202">Works as Designed</resolution>
                                        <assignee username="kevin.cherkauer@mongodb.com">Kevin Cherkauer</assignee>
                                    <reporter username="xgen-internal-coverity">Coverity Collector User</reporter>
                        <labels>
                            <label>coverity</label>
                            <label>neweng</label>
                    </labels>
                <created>Fri, 12 Aug 2022 13:51:54 +0000</created>
                <updated>Fri, 27 Oct 2023 13:51:56 +0000</updated>
                            <resolved>Fri, 26 Aug 2022 23:21:38 +0000</resolved>
                                                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="4781014" author="JIRAUSER1270811" created="Fri, 26 Aug 2022 23:21:38 +0000"  >&lt;p&gt;The source of the range loop returns const iterators, so a copy is made to the loop variable as the loop changes the state of the copy, which it is not allowed to do to the original because of constness.&lt;/p&gt;</comment>
                            <comment id="4780935" author="xgen-internal-githook" created="Fri, 26 Aug 2022 22:06:16 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Kevin Cherkauer&apos;, &apos;email&apos;: &apos;kevin.cherkauer@mongodb.com&apos;, &apos;username&apos;: &apos;kevin-cherkauer&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-68787&quot; title=&quot;Coverity analysis defect 122591: AUTO_CAUSES_COPY&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-68787&quot;&gt;&lt;del&gt;SERVER-68787&lt;/del&gt;&lt;/a&gt; Note why for loop is making a copy in comment&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9b5ae4a246aa43c49a8d099a4f81be64cd6e100c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9b5ae4a246aa43c49a8d099a4f81be64cd6e100c&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4746752" author="mickey.winters" created="Fri, 12 Aug 2022 14:10:18 +0000"  >&lt;p&gt;I think we want a copy here since _sortPattern is a local variable. later in the serialize method we serialize with the original queries sort pattern. NOT the modified sort pattern we construct here. I could have expressed this better with const auto and explicitly making a copy&lt;/p&gt;</comment>
                            <comment id="4746689" author="kyle.suarez" created="Fri, 12 Aug 2022 13:52:47 +0000"  >&lt;p&gt;CC &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mickey.winters%40mongodb.com&quot; class=&quot;user-hover&quot; rel=&quot;mickey.winters@mongodb.com&quot;&gt;mickey.winters@mongodb.com&lt;/a&gt;&lt;/p&gt;</comment>
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