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    <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-5332] warning: dereferencing type-punned pointer will break strict-aliasing rules</title>
                <link>https://jira.mongodb.org/browse/SERVER-5332</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;In file included from /home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/../../db/jsobj.h:33:0,&lt;br/&gt;
                 from /home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/../../db/cmdline.h:20,&lt;br/&gt;
                 from /home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/hostandport.h:21,&lt;br/&gt;
                 from /home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/message.h:22,&lt;br/&gt;
                 from /home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/dbclient.h:24,&lt;br/&gt;
                 from src/Doc.hh:17,&lt;br/&gt;
                 from src/crawler.cc:41:&lt;br/&gt;
/home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/../../db/../util/optime.h: In member function &apos;long long unsigned int mongo::OpTime::asDate() const&apos;:&lt;br/&gt;
/home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/../../db/../util/optime.h:97:69: warning: dereferencing type-punned pointer will break strict-aliasing rules &lt;span class=&quot;error&quot;&gt;&amp;#91;-Wstrict-aliasing&amp;#93;&lt;/span&gt;&lt;br/&gt;
/home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/../../db/../util/optime.h: In member function &apos;long long int mongo::OpTime::asLL() const&apos;:&lt;br/&gt;
/home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/../../db/../util/optime.h:100:60: warning: dereferencing type-punned pointer will break strict-aliasing rules &lt;span class=&quot;error&quot;&gt;&amp;#91;-Wstrict-aliasing&amp;#93;&lt;/span&gt;&lt;br/&gt;
In file included from /home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/dbclient.h:24:0,&lt;br/&gt;
                 from src/Doc.hh:17,&lt;br/&gt;
                 from src/crawler.cc:41:&lt;br/&gt;
/home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/message.h: In member function &apos;int&amp;amp; mongo::MsgData::dataAsInt()&apos;:&lt;br/&gt;
/home/piotr/devel/mycelium/3rd_party/mongodb/src/mongo/client/../util/net/message.h:120:35: warning: dereferencing type-punned pointer will break strict-aliasing rules &lt;span class=&quot;error&quot;&gt;&amp;#91;-Wstrict-aliasing&amp;#93;&lt;/span&gt;&lt;br/&gt;
src/crawler.cc: At global scope:&lt;/p&gt;</description>
                <environment>de20dd200870367e3f9000c9a6b74fed5e8fa402  from github</environment>
        <key id="33233">SERVER-5332</key>
            <summary>warning: dereferencing type-punned pointer will break strict-aliasing rules</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="9">Done</resolution>
                                        <assignee username="milkie@mongodb.com">Eric Milkie</assignee>
                                    <reporter username="piotr">Pedro Larroy</reporter>
                        <labels>
                    </labels>
                <created>Sun, 18 Mar 2012 23:49:58 +0000</created>
                <updated>Wed, 15 Aug 2012 14:24:20 +0000</updated>
                            <resolved>Thu, 22 Mar 2012 13:21:50 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="100200" author="milkie" created="Mon, 19 Mar 2012 17:15:21 +0000"  >&lt;p&gt;Hi Pedro,&lt;br/&gt;
The C++ driver uses the same headers as the server, for better or for worse.  We compile the server with -fno-strict-aliasing, and as a result we have several coding constructs in the headers that break the strict aliasing rules.  To fix your issue, I would compile your translation units that are including dbclient.h with -fno-strict-aliasing.&lt;/p&gt;</comment>
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