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https://issues.apache.org/jira/browse/IO-697?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bruno P. Kinoshita resolved IO-697.
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Resolution: Fixed
> IOUtils.toByteArray size validation does not match documenation.
> ----------------------------------------------------------------
>
> Key: IO-697
> URL: https://issues.apache.org/jira/browse/IO-697
> Project: Commons IO
> Issue Type: Bug
> Affects Versions: 2.8.0
> Reporter: scottyg
> Assignee: Bruno P. Kinoshita
> Priority: Major
> Fix For: 2.12.0
>
>
> According to the javadoc, "throws IOException ... or InputStream size differ
> from parameter size.
> I read that as the passed in parameter size must exactly match the length of
> data represented by the InputStream. However, the current implementation will:
> * Throw an exception if size parameter is larger than the InputStream
> * Work as expected if size parameter matches size of InputStream
> * *Return a byte array only containing up-to size parameter when InputStream
> is larger than size parameter. No exception is thrown*.
> What is the actual intention of the method? What the javadoc says, or what
> the implementation is currently doing?
>
> {code:java}
> /**
> * Gets the contents of an <code>InputStream</code> as a <code>byte[]</code>.
> * Use this method instead of <code>toByteArray(InputStream)</code>
> * when <code>InputStream</code> size is known
> *
> * @param input the <code>InputStream</code> to read from
> * @param size the size of <code>InputStream</code>
> * @return the requested byte array
> * @throws IOException if an I/O error occurs or
> <code>InputStream</code> size differ from parameter
> * size
> * @throws IllegalArgumentException if size is less than zero
> * @since 2.1
> */
> public static byte[] toByteArray(final InputStream input, final int size)
> throws IOException {code}
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