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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-20664] WiredTiger and zlib trigger clang 3.7&apos;s Wshift-negative-value warning</title>
                <link>https://jira.mongodb.org/browse/SERVER-20664</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It is included in Wall so we&apos;ll need to either fix them or suppress the warning when building those libraries.&lt;/p&gt;

&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;src/third_party/zlib-1.2.8/inflate.c:1507:61: error: shifting a negative signed value is undefined [-Werror,-Wshift-negative-value]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    if (strm == Z_NULL || strm-&amp;gt;state == Z_NULL) return -1L &amp;lt;&amp;lt; 16;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;                                                        ~~~ ^&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;1 error generated&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;</description>
                <environment></environment>
        <key id="231789">SERVER-20664</key>
            <summary>WiredTiger and zlib trigger clang 3.7&apos;s Wshift-negative-value warning</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="mathias@mongodb.com">Mathias Stearn</assignee>
                                    <reporter username="mathias@mongodb.com">Mathias Stearn</reporter>
                        <labels>
                    </labels>
                <created>Mon, 28 Sep 2015 17:03:14 +0000</created>
                <updated>Wed, 7 Dec 2016 22:50:13 +0000</updated>
                            <resolved>Fri, 9 Oct 2015 20:07:58 +0000</resolved>
                                                    <fixVersion>3.2.0-rc0</fixVersion>
                                    <component>Build</component>
                                        <votes>1</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1058114" author="xgen-internal-githook" created="Mon, 12 Oct 2015 16:43:19 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;RedBeard0531&apos;, u&apos;name&apos;: u&apos;Mathias Stearn&apos;, u&apos;email&apos;: u&apos;mathias@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-20664&quot; title=&quot;WiredTiger and zlib trigger clang 3.7&amp;#39;s Wshift-negative-value warning&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-20664&quot;&gt;&lt;del&gt;SERVER-20664&lt;/del&gt;&lt;/a&gt; Pull in zlib -Wshift-negative-value fixes&lt;/p&gt;

&lt;p&gt;This is just cherry picking the following two commits from the zlib repo:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/madler/zlib/commit/e54e1299404101a5a9d0cf5e45512b543967f958&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/madler/zlib/commit/e54e1299404101a5a9d0cf5e45512b543967f958&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Avoid shifts of negative values inflateMark().&lt;/p&gt;

&lt;p&gt;The C standard says that bit shifts of negative integers is&lt;br/&gt;
undefined.  This casts to unsigned values to assure a known&lt;br/&gt;
result.&lt;/p&gt;

&lt;p&gt;-------&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/madler/zlib/commit/44ae761dc2047038dc42a7e5a162d042fc392d2b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/madler/zlib/commit/44ae761dc2047038dc42a7e5a162d042fc392d2b&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;Clean up portability for shifts and integer sizes.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e59924200bd5754698b359c07d4858f05e920f80&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e59924200bd5754698b359c07d4858f05e920f80&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1045643" author="david.hows" created="Tue, 29 Sep 2015 01:33:15 +0000"  >&lt;p&gt;This has been fixed in zlib&apos;s development branch &lt;/p&gt;

&lt;p&gt;Issue: &lt;a href=&quot;https://github.com/madler/zlib/issues/111&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/madler/zlib/issues/111&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1045109" author="redbeard0531" created="Mon, 28 Sep 2015 17:17:54 +0000"  >&lt;p&gt;zlib commits:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/madler/zlib/commit/e54e1299404101a5a9d0cf5e45512b543967f958&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/madler/zlib/commit/e54e1299404101a5a9d0cf5e45512b543967f958&lt;/a&gt;&lt;br/&gt;
&lt;a href=&quot;https://github.com/madler/zlib/commit/44ae761dc2047038dc42a7e5a162d042fc392d2b&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/madler/zlib/commit/44ae761dc2047038dc42a7e5a162d042fc392d2b&lt;/a&gt;&lt;/p&gt;</comment>
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