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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-70706] Coverity analysis defect 133999: Move constructor without move assignment</title>
                <link>https://jira.mongodb.org/browse/SERVER-70706</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Copy without assign&lt;/p&gt;

&lt;p&gt; This class has a user-defined copy constructor but no user-defined assignment operator. If the copy constructor is necessary to manage owned resources then a corresponding assignment operator is usually required. If an object of this type is assigned memory leaks and/or use-after-free errors may occur. Note that a compiler-generated assignment operator will perform only a bit-wise copy for any fields that do not have their own assignment operators defined. Class has user-written copy constructor but no user-written assignment operator&lt;br/&gt;
/src/mongo/db/query/optimizer/cascades/memo_defs.h:56: COPY_WITHOUT_ASSIGN 133999 Class &quot;mongo::optimizer::cascades::OrderPreservingABTSet&quot; has a user-written copy constructor &quot;mongo::optimizer::cascades::OrderPreservingABTSet::OrderPreservingABTSet(mongo::optimizer::cascades::OrderPreservingABTSet const &amp;amp;) =delete&quot; but no corresponding user-written assignment operator.&lt;br/&gt;
/src/mongo/db/query/optimizer/cascades/memo_defs.h:59: COPY_WITHOUT_ASSIGN 133999 User-written copy constructor.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2162723">SERVER-70706</key>
            <summary>Coverity analysis defect 133999: Move constructor without move assignment</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="svilen.mihaylov@mongodb.com">Svilen Mihaylov</assignee>
                                    <reporter username="xgen-internal-coverity">Coverity Collector User</reporter>
                        <labels>
                            <label>coverity</label>
                            <label>neweng</label>
                    </labels>
                <created>Wed, 19 Oct 2022 20:14:15 +0000</created>
                <updated>Sun, 29 Oct 2023 21:31:43 +0000</updated>
                            <resolved>Wed, 2 Nov 2022 18:32:04 +0000</resolved>
                                                    <fixVersion>6.2.0-rc0</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="4949403" author="xgen-internal-githook" created="Wed, 2 Nov 2022 18:30:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Svilen Mihaylov&apos;, &apos;email&apos;: &apos;svilen.mihaylov@mongodb.com&apos;, &apos;username&apos;: &apos;svilen-mihaylov&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70706&quot; title=&quot;Coverity analysis defect 133999: Move constructor without move assignment&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70706&quot;&gt;&lt;del&gt;SERVER-70706&lt;/del&gt;&lt;/a&gt; Move constructor without move assignment&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/2a6386e6d6c1f847248e468a6407907484f58fb6&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/2a6386e6d6c1f847248e468a6407907484f58fb6&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="4913784" author="kyle.suarez" created="Wed, 19 Oct 2022 20:16:40 +0000"  >&lt;p&gt;The complaint about the copy constructor is a false positive, because explicitly deleting the copy constructor will cause the copy assignment operator to also be deleted.&lt;/p&gt;

&lt;p&gt;However, the move constructor is marked as &lt;tt&gt;= default&lt;/tt&gt;, so I think we do need to mark the move assignment operator as also &lt;tt&gt;= default&lt;/tt&gt; as it won&apos;t be generated by default?&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="409293" name="Screen Shot 2022-10-19 at 4.13.59 PM.png" size="73782" author="kyle.suarez@mongodb.com" created="Wed, 19 Oct 2022 20:15:06 +0000"/>
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