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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-14852] Create endian- and alignment-agnostic abstractions for reading and writing data</title>
                <link>https://jira.mongodb.org/browse/SERVER-14852</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;We lack a fundamental read/write primitive for the server which provides an endian and alignment safe cross platform abstraction.  I.e. one which swabs bytes where necessary and reads/writes via memcpy rather than reinterpret_cast.&lt;/p&gt;

&lt;p&gt;This is needed to:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;remove undefined behavior in the server&lt;/li&gt;
	&lt;li&gt;enable builds on big endian architectures&lt;/li&gt;
	&lt;li&gt;enable builds on architectures with strict alignment access&lt;/li&gt;
	&lt;li&gt;remove -fno-strict-aliasing from server compilation flags&lt;/li&gt;
&lt;/ul&gt;
</description>
                <environment></environment>
        <key id="151861">SERVER-14852</key>
            <summary>Create endian- and alignment-agnostic abstractions for reading and writing data</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="9">Done</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="mira.carey@mongodb.com">Mira Carey</reporter>
                        <labels>
                    </labels>
                <created>Mon, 11 Aug 2014 17:44:36 +0000</created>
                <updated>Tue, 17 Mar 2015 17:05:38 +0000</updated>
                            <resolved>Fri, 26 Sep 2014 19:22:45 +0000</resolved>
                                    <version>2.7.4</version>
                                    <fixVersion>2.7.7</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="688418" author="xgen-internal-githook" created="Tue, 12 Aug 2014 18:17:13 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;hanumantmk&apos;, u&apos;name&apos;: u&apos;Jason Carey&apos;, u&apos;email&apos;: u&apos;hanumantmk@gmail.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-14852&quot; title=&quot;Create endian- and alignment-agnostic abstractions for reading and writing data&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-14852&quot;&gt;&lt;del&gt;SERVER-14852&lt;/del&gt;&lt;/a&gt; AAE safe read/write primitives&lt;/p&gt;

&lt;p&gt;Alignment, aliasing and endian safe read write primitives in the form&lt;br/&gt;
of DataView and DataCursor primitives.  These primitives provide safe&lt;br/&gt;
reads and writes with explicit endian variants that funnel through&lt;br/&gt;
std::memcpy to provide defined behavior.&lt;/p&gt;

&lt;p&gt;Support for a safe packed struct idiom is also provided in the&lt;br/&gt;
encoded_value_storage class.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8d0bf7dfbfafd09b9465feec3651cdd31aeb0dcc&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8d0bf7dfbfafd09b9465feec3651cdd31aeb0dcc&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="12776">SERVER-1625</issuekey>
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            <issuelink>
            <issuekey id="13125">SERVER-1811</issuekey>
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            <issuekey id="151867">SERVER-14853</issuekey>
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            <issuelink>
            <issuekey id="190142">SERVER-17629</issuekey>
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