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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>[CDRIVER-2508] Prohibit writeConcern values less than -1</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-2508</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;We use writeConcern values of &quot;w&quot; -2 through -4 to express special internal meanings. By accident, we also allow these values in URIs like:&lt;/p&gt;

&lt;p&gt;mongodb://host/?w=-4&lt;/p&gt;

&lt;p&gt;and also in BSON documents passed as &quot;opts&quot;:&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;bson_t *opts;&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&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;   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;opts = BCON_NEW (&quot;writeConcern&quot;, &quot;{&quot;, &quot;w&quot;, BCON_INT32 (-4), &quot;}&quot;);&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;   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;mongoc_collection_insert_one (collection, document, opts);&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
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&lt;p/&gt;
&lt;p&gt;In 1.10, we&apos;ll prohibit &quot;w&quot; values less than -1.&lt;/p&gt;

&lt;p&gt;&quot;w=-1&quot; is still allowed as a deprecated alias for &quot;w=0&quot; (&lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-628&quot; title=&quot;Deprecate MONGOC_WRITE_CONCERN_W_ERRORS_IGNORED&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-628&quot;&gt;&lt;del&gt;CDRIVER-628&lt;/del&gt;&lt;/a&gt;).&lt;/p&gt;</description>
                <environment></environment>
        <key id="498500">CDRIVER-2508</key>
            <summary>Prohibit writeConcern values less than -1</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="13201">Fixed</resolution>
                                        <assignee username="jesse@mongodb.com">A. Jesse Jiryu Davis</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Thu, 15 Feb 2018 16:13:11 +0000</created>
                <updated>Sat, 28 Oct 2023 11:30:06 +0000</updated>
                            <resolved>Thu, 15 Feb 2018 16:14:15 +0000</resolved>
                                                    <fixVersion>1.10.0</fixVersion>
                                    <component>libmongoc</component>
                    <component>uri</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="1810037" author="xgen-internal-githook" created="Tue, 20 Feb 2018 14:15:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;jesse@mongodb.com&apos;, &apos;name&apos;: &apos;A. Jesse Jiryu Davis&apos;, &apos;username&apos;: &apos;ajdavis&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-2508&quot; title=&quot;Prohibit writeConcern values less than -1&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-2508&quot;&gt;&lt;del&gt;CDRIVER-2508&lt;/del&gt;&lt;/a&gt; correct NEWS entry for negative &quot;w&quot;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/5dbcc104b3267b19904fd4589b9da9715bd41898&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/5dbcc104b3267b19904fd4589b9da9715bd41898&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1807199" author="jesse" created="Thu, 15 Feb 2018 18:57:15 +0000"  >&lt;p&gt;Good point, thanks. I&apos;ll update the NEWS entry, this only affects BSON opts.&lt;/p&gt;</comment>
                            <comment id="1807069" author="jmikola@gmail.com" created="Thu, 15 Feb 2018 17:09:54 +0000"  >&lt;p&gt;For the record, I believe values less than -1 have been rejected in the URI since 1.9.0 (&lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-2234&quot; title=&quot;_mongoc_uri_build_write_concern() should report unsupported &amp;quot;w&amp;quot; option as error&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-2234&quot;&gt;&lt;del&gt;CDRIVER-2234&lt;/del&gt;&lt;/a&gt;). See: &lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/7ffa3f05207555d691b162ea51b5d86ddf3bfa55&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;7ffa3f0&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;That is when PHPC stopped using such values in our URI tests: &lt;a href=&quot;https://github.com/mongodb/mongo-php-driver/commit/f609ac7d356bcd756e3cdfb42833da9cbc084a79#diff-d06d5a7958c3f5966018cb2f169ae92aL17&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;f609ac7&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="1806872" author="jesse" created="Thu, 15 Feb 2018 16:14:15 +0000"  >&lt;p&gt;Fixed in patch for &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-2490&quot; title=&quot;Resync tests to update handling of inconsistent write concern&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-2490&quot;&gt;&lt;del&gt;CDRIVER-2490&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                    </comments>
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                            <issuelinktype id="10012">
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                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="201392">CDRIVER-628</issuekey>
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            <issuelink>
            <issuekey id="491738">CDRIVER-2490</issuekey>
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