This is the reproducer:

git clone https://gitbox.apache.org/repos/asf/commons-lang.git
git checkout 0ffdc06a99330d6c754b8d3e0a6696f5dfdecb90 # this is where we are now
cd /commons-lang
mvn clean javadoc:javadoc && mvn javadoc:javadoc

Weird!

Gary

On 2025/08/29 20:42:55 Matthias Bünger wrote:
>  From my experience this is mostly an encoding issue, e.g. not using 
> UTF-8 everywhere.
> 
> Am 29.08.2025 um 22:30 schrieb Gary D. Gregory:
> > Hi All,
> >
> > A MalformedInputException started happening today when we updated our 
> > parent pom in Command Lang which includes updating the Javadoc plugin from 
> > 3.11.2 to 3.11.3. Do you think this failure is related to 
> > https://stackoverflow.com/questions/53449049/maven-javadoc-plugin-error-javadoc-error-cannot-read-input-length-1-with-no
> >  and 
> > https://github.com/apache/maven-javadoc-plugin/blob/3dcf135299950db9541f7da671bec1a84c5cef49/src/main/java/org/apache/maven/plugins/javadoc/AbstractJavadocMojo.java#L4373?
> >
> > <...>
> > Caused by: java.nio.charset.MalformedInputException: Input length = 1
> >      at java.nio.charset.CoderResult.throwException (CoderResult.java:281)
> >      at sun.nio.cs.StreamDecoder.implRead (StreamDecoder.java:339)
> >      at sun.nio.cs.StreamDecoder.read (StreamDecoder.java:178)
> >      at java.io.InputStreamReader.read (InputStreamReader.java:184)
> >      at java.io.BufferedReader.fill (BufferedReader.java:161)
> >      at java.io.BufferedReader.readLine (BufferedReader.java:324)
> >      at java.io.BufferedReader.readLine (BufferedReader.java:389)
> >      at java.io.BufferedReader$1.hasNext (BufferedReader.java:571)
> >      at java.util.Iterator.forEachRemaining (Iterator.java:115)
> >      at java.util.Spliterators$IteratorSpliterator.forEachRemaining 
> > (Spliterators.java:1801)
> >      at java.util.stream.AbstractPipeline.copyInto 
> > (AbstractPipeline.java:482)
> >      at java.util.stream.AbstractPipeline.wrapAndCopyInto 
> > (AbstractPipeline.java:472)
> >      at java.util.stream.ReduceOps$ReduceOp.evaluateSequential 
> > (ReduceOps.java:708)
> >      at java.util.stream.AbstractPipeline.evaluate 
> > (AbstractPipeline.java:234)
> >      at java.util.stream.ReferencePipeline.collect 
> > (ReferencePipeline.java:566)
> >      at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.isUpToDate 
> > (AbstractJavadocMojo.java:5010)
> >
> > From:
> >
> > https://github.com/apache/commons-lang/actions/runs/17325932362/job/49213011492
> >
> > The output for the above is copied to 
> > https://gist.github.com/garydgregory/1652fd57c1481b6090c48a8229e8cc65
> >
> > TY,
> > Gary
> >
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