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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-2688] Crash from swift driver calling bson_init_from_json </title>
                <link>https://jira.mongodb.org/browse/CDRIVER-2688</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;A test in the Swift driver &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kaitlin.mahar&quot; class=&quot;user-hover&quot; rel=&quot;kaitlin.mahar&quot;&gt;kaitlin.mahar&lt;/a&gt; wrote crashes with a null pointer access in bson_init_from_json:&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;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-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;func testFailure() throws {&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       // this works fine&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       let extjson1 = &quot;{\&quot;a\&quot; : [{\&quot;$numberInt\&quot;: \&quot;10\&quot;}]}&quot;.data(using: .utf8)!&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       let res1 = try Document(fromJSON: extjson1)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       print(res1)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;&amp;nbsp;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       // this crashes&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       let extjson2 = &quot;{\&quot;x\&quot; : { \&quot;$binary\&quot; : {\&quot;base64\&quot; : \&quot;\&quot;, \&quot;subType\&quot; : \&quot;00\&quot;}}}&quot;.data(using: .utf8)!&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       let res2 = try Document(fromJSON: extjson2)&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&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;       print(res2)&lt;/span&gt;&lt;/pre&gt;
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		&lt;/tr&gt;
				&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;   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;   }&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Kaitlin is able to reproduce this using 1.10 but &lt;b&gt;not&lt;/b&gt; in 1.9 on macOS. This seems like an issue with the C driver. I couldn&apos;t reproduce the crash on Linux, nor from calling &lt;tt&gt;bson_init_from_json&lt;/tt&gt; with the same arguments directly in the C driver. But I have not yet tested the Swift test on macOS yet. &lt;/p&gt;</description>
                <environment></environment>
        <key id="555164">CDRIVER-2688</key>
            <summary>Crash from swift driver calling bson_init_from_json </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="13203">Gone away</resolution>
                                        <assignee username="kevin.albertson@mongodb.com">Kevin Albertson</assignee>
                                    <reporter username="kevin.albertson@mongodb.com">Kevin Albertson</reporter>
                        <labels>
                    </labels>
                <created>Wed, 6 Jun 2018 19:14:40 +0000</created>
                <updated>Fri, 27 Oct 2023 19:50:13 +0000</updated>
                            <resolved>Mon, 11 Jun 2018 18:16:49 +0000</resolved>
                                    <version>1.10.1</version>
                                    <fixVersion>1.12.0</fixVersion>
                                    <component>json</component>
                    <component>libbson</component>
                                        <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="1917319" author="kevin.albertson" created="Mon, 11 Jun 2018 18:16:49 +0000"  >&lt;p&gt;Fixed with commit to &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-2693&quot; title=&quot;Segfault in bson_b64_pton parsing valid BSON&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-2693&quot;&gt;&lt;del&gt;CDRIVER-2693&lt;/del&gt;&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1917316" author="kaitlin.mahar" created="Mon, 11 Jun 2018 18:14:11 +0000"  >&lt;p&gt;Sorry, missed your previous comment - we don&apos;t call bson_destroy_with_steal anywhere.&lt;/p&gt;

&lt;p&gt;I just built the C driver from master, and the test no longer fails. So yes, it seems that fixed it! Thanks.&#160;&lt;/p&gt;</comment>
                            <comment id="1917293" author="jesse" created="Mon, 11 Jun 2018 17:55:55 +0000"  >&lt;p&gt;Kevin points out that my &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-2693&quot; title=&quot;Segfault in bson_b64_pton parsing valid BSON&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-2693&quot;&gt;&lt;del&gt;CDRIVER-2693&lt;/del&gt;&lt;/a&gt; fix might also fix this. &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=kaitlin.mahar&quot; class=&quot;user-hover&quot; rel=&quot;kaitlin.mahar&quot;&gt;kaitlin.mahar&lt;/a&gt;, could you try with the latest C code on master?&lt;/p&gt;</comment>
                            <comment id="1915519" author="jesse" created="Fri, 8 Jun 2018 18:38:09 +0000"  >&lt;p&gt;Could you check if Swift calls bson_destroy_with_steal?&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="556762">CDRIVER-2693</issuekey>
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