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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-70597] QueryPlannerAccess::processIndexScans fails when MatchExpression is not optimized</title>
                <link>https://jira.mongodb.org/browse/SERVER-70597</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It looks like when the &apos;disableMatchExpressionOptimization&apos; failpoint is set, QueryPlannerAccess can do an incorrect static_cast.&lt;/p&gt;

&lt;p&gt;We should fix this to prevent it from happening in the optimization fuzzer.  We also might as well use checked_cast to make diagnosis easier.&lt;/p&gt;</description>
                <environment></environment>
        <key id="2159644">SERVER-70597</key>
            <summary>QueryPlannerAccess::processIndexScans fails when MatchExpression is not optimized</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</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="david.percy@mongodb.com">David Percy</assignee>
                                    <reporter username="david.percy@mongodb.com">David Percy</reporter>
                        <labels>
                    </labels>
                <created>Fri, 14 Oct 2022 22:32:42 +0000</created>
                <updated>Sun, 29 Oct 2023 21:31:51 +0000</updated>
                            <resolved>Tue, 17 Jan 2023 01:18:44 +0000</resolved>
                                                    <fixVersion>6.3.0-rc0</fixVersion>
                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="5116250" author="xgen-internal-githook" created="Tue, 17 Jan 2023 01:01:07 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;David Percy&apos;, &apos;email&apos;: &apos;david.percy@mongodb.com&apos;, &apos;username&apos;: &apos;dpercy&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70597&quot; title=&quot;QueryPlannerAccess::processIndexScans fails when MatchExpression is not optimized&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70597&quot;&gt;&lt;del&gt;SERVER-70597&lt;/del&gt;&lt;/a&gt; Don&apos;t generate OrPushdown tags when optimization is disabled&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/f7dc2ed1335f3d24e69ac5a147f8eff2f131816a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/f7dc2ed1335f3d24e69ac5a147f8eff2f131816a&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="5019494" author="xgen-internal-githook" created="Wed, 30 Nov 2022 17:20:00 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;David Percy&apos;, &apos;email&apos;: &apos;david.percy@mongodb.com&apos;, &apos;username&apos;: &apos;dpercy&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-70597&quot; title=&quot;QueryPlannerAccess::processIndexScans fails when MatchExpression is not optimized&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-70597&quot;&gt;&lt;del&gt;SERVER-70597&lt;/del&gt;&lt;/a&gt; Use checked_cast for downcast from TagData to IndexTag&lt;/p&gt;

&lt;p&gt;When tests use disableMatchExpressionOptimization (an internal-only&lt;br/&gt;
feature), some of these casts are incorrect. Using checked_cast will&lt;br/&gt;
give us a well defined crash instead of UB when this happens, which&lt;br/&gt;
should make the test failures easier to deduplicate.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/70cb8b5a4c99802f6b5ee7b0c3439fc34742508c&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/70cb8b5a4c99802f6b5ee7b0c3439fc34742508c&lt;/a&gt;&lt;/p&gt;</comment>
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