I haven't heard of this problem. Filing a bug seems the right thing to do. 
Please provide as much of the relevant information as you can. For example: 
what options you run javadoc with, what happens if you run javadoc from the 
same JDK 17 (17-ea+26-2439), how many annotations and where you have added, 
what the source-lines-of-code count of the project is, etc.

-Pavel

> On 16 Jun 2021, at 17:45, Rick Hillegas <rick.hille...@gmail.com> wrote:
> 
> I work on Apache Derby. Derby is one of the applications which receive 
> advance notice of new Open JDK distributions. We then build our application 
> with the new JDK's javac and javadoc tools and we run our full test suite 
> against the new JVM. As a canary in the mineshaft, we noticed the following 
> significant disruption.
> 
> When I tried to build Derby with the Rampdown Phase One build of open JDK 17 
> (17-ea+26-2439), I saw many warnings related to the deprecation of Security 
> Manager classes and methods, undoubtedly the consequence of JEP 411 
> (https://openjdk.java.net/jeps/411). In a security-...@openjdk.java.net email 
> thread titled "blizzard of deprecation warnings related to JEP 411", Alan 
> Bateman recommended that we decorate the warned usages with 
> @SuppressWarnings("removal") annotations, as the Open JDK's own code does. 
> That does silence the warnings. I can then cleanly build the Derby javadoc 
> using 17-ea+26-2439.
> 
> However, when I run javadoc on the annotated code using OpenJDK Runtime 
> Environment 18.9 (build 11+28), the JDK 11 javadoc tool dies with the 
> following stack trace:
> 
>   [javadoc] javadoc: error - An internal exception has occurred.
>   [javadoc]     (java.lang.OutOfMemoryError: Java heap space)
>   [javadoc] Please file a bug against the javadoc tool via the Java bug 
> reporting page
>   [javadoc] (http://bugreport.java.com) after checking the Bug Database 
> (http://bugs.java.com)
>   [javadoc] for duplicates. Include error messages and the following 
> diagnostic in your report. Thank you.
>   [javadoc] java.lang.OutOfMemoryError: Java heap space
>   [javadoc]     at java.base/java.util.Arrays.copyOf(Arrays.java:3745)
>   [javadoc]     at 
> java.base/java.lang.StringCoding.encodeUTF8(StringCoding.java:888)
>   [javadoc]     at 
> java.base/java.lang.StringCoding.encode(StringCoding.java:489)
>   [javadoc]     at java.base/java.lang.String.getBytes(String.java:981)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.AbstractIndexWriter.createSearchIndexFile(AbstractIndexWriter.java:501)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.AbstractIndexWriter.createSearchIndexFiles(AbstractIndexWriter.java:456)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.SingleIndexWriter.generateIndexFile(SingleIndexWriter.java:133)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.SingleIndexWriter.generate(SingleIndexWriter.java:85)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDoclet.generateOtherFiles(HtmlDoclet.java:147)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:213)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.run(AbstractDoclet.java:114)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.doclet.StandardDoclet.run(StandardDoclet.java:72)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.tool.Start.parseAndExecute(Start.java:582)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:431)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:344)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.tool.Main.execute(Main.java:63)
>   [javadoc]     at 
> jdk.javadoc/jdk.javadoc.internal.tool.Main.main(Main.java:52)
> 
> Is this a known problem with a known mitigation or should I file a javadoc 
> bug for this?
> 
> Thanks,
> -Rick
> 

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