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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-13600] Remove copying implicit conversions between NamespaceString and std::string.</title>
                <link>https://jira.mongodb.org/browse/SERVER-13600</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;These implicit conversions are dangerous when combined with pass-by-reference, plus they introduce unexpected copies.&lt;/p&gt;

&lt;p&gt;While it would be ideal to remove all implicit conversion between the types, an expedient step along the way is to remove implicit construction of NamespaceStrings and std::strings, while still allowing implicit casting from const NamespaceString&amp;amp; to std::string&amp;amp;.&lt;/p&gt;</description>
                <environment></environment>
        <key id="131282">SERVER-13600</key>
            <summary>Remove copying implicit conversions between NamespaceString and std::string.</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="9">Done</resolution>
                                        <assignee username="schwerin@mongodb.com">Andy Schwerin</assignee>
                                    <reporter username="schwerin@mongodb.com">Andy Schwerin</reporter>
                        <labels>
                    </labels>
                <created>Tue, 15 Apr 2014 16:39:45 +0000</created>
                <updated>Mon, 11 Jul 2016 17:19:14 +0000</updated>
                            <resolved>Tue, 15 Apr 2014 18:59:28 +0000</resolved>
                                                    <fixVersion>2.7.0</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="550569" author="xgen-internal-githook" created="Tue, 15 Apr 2014 18:57:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13600&quot; title=&quot;Remove copying implicit conversions between NamespaceString and std::string.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13600&quot;&gt;&lt;del&gt;SERVER-13600&lt;/del&gt;&lt;/a&gt; Remove string-copying implicit conversion operator from NamespaceString to std::string.&lt;/p&gt;

&lt;p&gt;By replacing the implicit conversion operator from const&lt;br/&gt;
NamespaceString&amp;amp;&lt;del&gt;&amp;gt;std::string with one from const NamespaceString&amp;amp;&lt;/del&gt;&amp;gt;const&lt;br/&gt;
std::string&amp;amp;, we at least eliminate an implicit copy.  Better might be to get&lt;br/&gt;
rid of the implicit conversion entirely, but we might want to start by removing&lt;br/&gt;
APIs that take std::string when they mean NamespaceString.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/194676d5d68993abc3fa709d0661850e699dc154&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/194676d5d68993abc3fa709d0661850e699dc154&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="550568" author="xgen-internal-githook" created="Tue, 15 Apr 2014 18:57:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;andy10gen&apos;, u&apos;name&apos;: u&apos;Andy Schwerin&apos;, u&apos;email&apos;: u&apos;schwerin@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-13600&quot; title=&quot;Remove copying implicit conversions between NamespaceString and std::string.&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-13600&quot;&gt;&lt;del&gt;SERVER-13600&lt;/del&gt;&lt;/a&gt; Forbid implicit construction of NamespaceString from StringData.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/044e2d91a089efd7da2e044a29dc875c12e5a548&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/044e2d91a089efd7da2e044a29dc875c12e5a548&lt;/a&gt;&lt;/p&gt;</comment>
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