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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-37161] Coverity analysis defect 105024: Macro compares unsigned to 0</title>
                <link>https://jira.mongodb.org/browse/SERVER-37161</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;An unsigned value can never be less than 0&lt;/p&gt;

&lt;p&gt;Defect 105024 (STATIC_C)&lt;br/&gt;
  Checker NO_EFFECT (subcategory unsigned_compare_macros)&lt;br/&gt;
  File:  &lt;tt&gt;/src/mongo/transport/service_executor_reserved.cpp&lt;/tt&gt;&lt;br/&gt;
  Function &lt;tt&gt;mongo::transport::ServiceExecutorReserved::_startWorker()::&lt;span class=&quot;error&quot;&gt;&amp;#91;lambda() (instance 1)&amp;#93;&lt;/span&gt;::operator ()() const::&lt;span class=&quot;error&quot;&gt;&amp;#91;lambda() (instance 1)&amp;#93;&lt;/span&gt;::operator ()() const&lt;/tt&gt;&lt;br/&gt;
    /src/mongo/transport/service_executor_reserved.cpp, line: 90&lt;br/&gt;
    &lt;font color=&quot;red&quot;&gt;This greater-than-or-equal-to-zero comparison of an unsigned value is always true. &quot;this-&amp;gt;__coverity_captured_this-&amp;gt;_numRunningWorkerThreads.subtractAndFetch(1U) &amp;gt;= 0U&quot;.&lt;/font&gt; &lt;/p&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;                invariant(_numRunningWorkerThreads.subtractAndFetch(1) &amp;gt;= 0);&lt;/span&gt;&lt;/pre&gt;
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                <environment></environment>
        <key id="605860">SERVER-37161</key>
            <summary>Coverity analysis defect 105024: Macro compares unsigned to 0</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</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="jonathan.reams@mongodb.com">Jonathan Reams</assignee>
                                    <reporter username="xgen-internal-coverity">Coverity Collector User</reporter>
                        <labels>
                            <label>coverity</label>
                    </labels>
                <created>Mon, 17 Sep 2018 13:10:39 +0000</created>
                <updated>Sun, 29 Oct 2023 22:28:09 +0000</updated>
                            <resolved>Thu, 27 Sep 2018 19:45:22 +0000</resolved>
                                                    <fixVersion>4.1.4</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2016827" author="jonathan.reams@10gen.com" created="Thu, 27 Sep 2018 19:45:22 +0000"  >&lt;p&gt;This was fixed by reverting &lt;a href=&quot;https://github.com/mongodb/mongo/commit/4fe0de9a46492e9fa747e88234e483d172d9c410.&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/4fe0de9a46492e9fa747e88234e483d172d9c410.&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2004797" author="milkie" created="Mon, 17 Sep 2018 13:13:42 +0000"  >&lt;p&gt;I mistakenly assumed _numRunningWorkerThreads was signed when I reviewed the change that added this invariant.  I suppose we should just remove the invariant now, as there isn&apos;t an easy way to detect underflow here.  &lt;/p&gt;</comment>
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