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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-11020] Consistently use NDEBUG across all TU&apos;s when building without debugging</title>
                <link>https://jira.mongodb.org/browse/SERVER-11020</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;For historical reasons, we have not been defining NDEBUG globally in the server build. This resulted in at least one subtle misconfiguration (see &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-11010&quot; title=&quot;Building without NDEBUG defined causes tcmalloc to prefer the mmap allocator to sbrk allocator&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-11010&quot;&gt;&lt;del&gt;SERVER-11010&lt;/del&gt;&lt;/a&gt;). We fixed &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-11010&quot; title=&quot;Building without NDEBUG defined causes tcmalloc to prefer the mmap allocator to sbrk allocator&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-11010&quot;&gt;&lt;del&gt;SERVER-11010&lt;/del&gt;&lt;/a&gt; by adding NDEBUG, but scoped only to the gperftools build, but this won&apos;t protect against other future third_party dependencies on NDEBUG.&lt;/p&gt;

&lt;p&gt;We should, early in 2.7, promote NDEBUG to the top level build for non-debug builds.&lt;/p&gt;</description>
                <environment></environment>
        <key id="92565">SERVER-11020</key>
            <summary>Consistently use NDEBUG across all TU&apos;s when building without debugging</summary>
                <type id="3" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14718&amp;avatarType=issuetype">Task</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="9">Done</resolution>
                                        <assignee username="andrew.morrow@mongodb.com">Andrew Morrow</assignee>
                                    <reporter username="andrew.morrow@mongodb.com">Andrew Morrow</reporter>
                        <labels>
                            <label>build</label>
                    </labels>
                <created>Thu, 3 Oct 2013 14:52:40 +0000</created>
                <updated>Fri, 18 Sep 2015 22:40:54 +0000</updated>
                            <resolved>Fri, 27 Mar 2015 15:39:29 +0000</resolved>
                                                    <fixVersion>3.1.1</fixVersion>
                                    <component>Build</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="866159" author="xgen-internal-githook" created="Fri, 27 Mar 2015 15:38:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;acmorrow&apos;, u&apos;name&apos;: u&apos;Andrew Morrow&apos;, u&apos;email&apos;: u&apos;acm@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-11020&quot; title=&quot;Consistently use NDEBUG across all TU&amp;#39;s when building without debugging&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-11020&quot;&gt;&lt;del&gt;SERVER-11020&lt;/del&gt;&lt;/a&gt; Don&apos;t overload the meaning of _DEBUG, use our own debug macro&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/67cf6c0d51bf59a1933325c793b02c220283f331&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/67cf6c0d51bf59a1933325c793b02c220283f331&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="864528" author="milkie" created="Thu, 26 Mar 2015 01:53:29 +0000"  >&lt;p&gt;I&apos;m leaning towards using something private to MongoDB, instead of using NDEBUG.  After refreshing my memory with &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-16496&quot; title=&quot;override Boost&amp;#39;s assert handler&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-16496&quot;&gt;&lt;del&gt;SERVER-16496&lt;/del&gt;&lt;/a&gt;, it seems like it would be helpful to avoid problems in the future if we do NOT use NDEBUG, in case a future third-party product makes use of it and changes behavior in a way we dislike.&lt;br/&gt;
It will mean that when importing new third-party code, we should remember to check if such code uses NDEBUG and what repercussions it has.&lt;/p&gt;</comment>
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