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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>[JAVA-1793] JsonReader incorrectly parses strings containing Unicode surrogate pairs</title>
                <link>https://jira.mongodb.org/browse/JAVA-1793</link>
                <project id="10006" key="JAVA">Java Driver</project>
                    <description>&lt;p&gt;First reported on &lt;a href=&quot;https://groups.google.com/forum/?utm_medium=email&amp;amp;utm_source=footer#!msg/mongodb-user/ihCV6zWzWlg/n3JbuMUha_MJ&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-users&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;JsonReader reads the full surrogate pair using String.codePointAt, but then always moves the position by one character.&lt;/p&gt;</description>
                <environment></environment>
        <key id="201767">JAVA-1793</key>
            <summary>JsonReader incorrectly parses strings containing Unicode surrogate pairs</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="jeff.yemin@mongodb.com">Jeffrey Yemin</assignee>
                                    <reporter username="jeff.yemin@mongodb.com">Jeffrey Yemin</reporter>
                        <labels>
                    </labels>
                <created>Mon, 4 May 2015 11:27:16 +0000</created>
                <updated>Tue, 5 May 2015 19:38:45 +0000</updated>
                            <resolved>Mon, 4 May 2015 19:08:17 +0000</resolved>
                                    <version>3.0.0</version>
                                    <fixVersion>3.0.1</fixVersion>
                    <fixVersion>3.1.0</fixVersion>
                                    <component>JSON</component>
                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="905773" author="jeff.yemin" created="Tue, 5 May 2015 19:38:45 +0000"  >&lt;p&gt;Closed for 3.0.1 release.&lt;/p&gt;</comment>
                            <comment id="904543" author="xgen-internal-githook" created="Mon, 4 May 2015 19:04:44 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jyemin&apos;, u&apos;name&apos;: u&apos;Jeff Yemin&apos;, u&apos;email&apos;: u&apos;jeff.yemin@10gen.com&apos;}
&lt;p&gt;Message: Since JsonBuffer is reading character-by-character anyway, there is no need to use String.codePointAt.  And doing so is incorrect&lt;br/&gt;
unless there is a corresponding call to Character.charCount instead of just incrementing the position by a single character.  The fix&lt;br/&gt;
is simply to use use String.charAt instead of String.codePointAt.&lt;/p&gt;

&lt;p&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-1793&quot; title=&quot;JsonReader incorrectly parses strings containing Unicode surrogate pairs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-1793&quot;&gt;&lt;del&gt;JAVA-1793&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: 3.0.x&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/49654cf31a77dbde8e1f06061808ec28f477fb18&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/49654cf31a77dbde8e1f06061808ec28f477fb18&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="904508" author="xgen-internal-githook" created="Mon, 4 May 2015 18:33:52 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;jyemin&apos;, u&apos;name&apos;: u&apos;Jeff Yemin&apos;, u&apos;email&apos;: u&apos;jeff.yemin@10gen.com&apos;}
&lt;p&gt;Message: Since JsonBuffer is reading character-by-character anyway, there is no need to use String.codePointAt.  And doing so is incorrect&lt;br/&gt;
unless there is a corresponding call to Character.charCount instead of just incrementing the position by a single character.  The fix&lt;br/&gt;
is simply to use use String.charAt instead of String.codePointAt.&lt;/p&gt;

&lt;p&gt; &lt;a href=&quot;https://jira.mongodb.org/browse/JAVA-1793&quot; title=&quot;JsonReader incorrectly parses strings containing Unicode surrogate pairs&quot; class=&quot;issue-link&quot; data-issue-key=&quot;JAVA-1793&quot;&gt;&lt;del&gt;JAVA-1793&lt;/del&gt;&lt;/a&gt;&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-java-driver/commit/ca5df77fa2c60760b5ef360335e5b6f58a3cbba0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-java-driver/commit/ca5df77fa2c60760b5ef360335e5b6f58a3cbba0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="904250" author="twillouer" created="Mon, 4 May 2015 15:14:55 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;I correct it with a simple :&lt;/p&gt;

&lt;p&gt;package org.bson.json;&lt;/p&gt;

&lt;p&gt;class JsonBuffer {&lt;br/&gt;
  public int read() &lt;/p&gt;
{
    return (position &amp;gt;= buffer.length()) ? -1 : buffer.charAt(position++);
  }

&lt;p&gt;(don&apos;t know if unread must be corrected to, I think so)&lt;/p&gt;</comment>
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