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    <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-7459] BSONObjBuilder and BSONArrayBuilder may throw (msgasserted) in destructor</title>
                <link>https://jira.mongodb.org/browse/SERVER-7459</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;If a BSONObjBuilder or BSONArrayBuilder is destroyed and done() or obj() have not been called, _done() is invoked by the destructor.&lt;br/&gt;
_done(), in turn, calls _BufBuilder::grow() to make space for EOO.&lt;br/&gt;
When an attempt is made by _BufBuilder::grow_reallocate() (called by grow()) to expand the buffer over BufferMaxSize a MsgAssertionException is raised by msgasserted(13548, &quot;BufBuilder attempted to grow() &quot; ... &quot; past the 64MB limit&quot;).&lt;br/&gt;
This exception is not catchable and crashes the process.&lt;/p&gt;

&lt;p&gt;A suboptimal workaround is to make sure to call *Builder::doneFast() before the builder&apos;s destructor is invoked when there&apos;s a chance that the constructed BSONObject exceeds 64MB.&lt;/p&gt;

&lt;p&gt;A possible solution involves reserving space for EOO when creating a builder so that the destructor never needs to grow the buffer to append EOO. &lt;/p&gt;</description>
                <environment></environment>
        <key id="54213">SERVER-7459</key>
            <summary>BSONObjBuilder and BSONArrayBuilder may throw (msgasserted) in destructor</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="henrik.edin@mongodb.com">Henrik Edin</assignee>
                                    <reporter username="andrea.lattuada@10gen.com">Andrea Lattuada</reporter>
                        <labels>
                    </labels>
                <created>Wed, 24 Oct 2012 17:52:20 +0000</created>
                <updated>Tue, 15 Mar 2022 20:02:56 +0000</updated>
                            <resolved>Tue, 15 Mar 2022 20:02:56 +0000</resolved>
                                                                    <component>Internal Code</component>
                    <component>Stability</component>
                                        <votes>1</votes>
                                    <watches>8</watches>
                                                                                                                <comments>
                            <comment id="4413968" author="henrik.edin" created="Tue, 15 Mar 2022 20:02:56 +0000"  >&lt;p&gt;Space is reserved for the EOO byte so we do not need to grow in the destructor.&lt;/p&gt;</comment>
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            <issuekey id="183231">SERVER-17226</issuekey>
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