[OpenJDK 2D-Dev] [9] request for review: 8074954: ImageInputStreamImpl.readShort/readInt do not behave correctly at EOF

Sergey Bylokhov Sergey.Bylokhov at oracle.com
Fri Mar 20 17:32:52 UTC 2015

Hi, Andrew?
Hi, Andrew.
Should we update a readFully() also?
      * @exception java.io.EOFException if the stream reaches the end before
      * reading all the bytes.
      * @exception IOException if an I/O error occurs.
     void readFully(byte[] b, int off, int len) throws IOException;

20.03.15 14:30, Andrew Brygin wrote:
> Hello,
>  could you please review a fix for CR 8074954?
> Bug: https://bugs.openjdk.java.net/browse/JDK-8074954
> Webrev: http://cr.openjdk.java.net/~bae/8074954/9/webrev.00/
>  The problem happens if an input stream does not contain enough data
>  to read a multi-byte type (as 4-bytes integer or 2-bytes short)
>  completely. In this case the actual number of obtained bytes is
>  returned, and if we get at least one byte, the EOF exception in
>  not triggered.
>  As a result, an incorrect value is returned.
>  Suggested fix is to check explicitly whether required number of bytes
>  has been read.
>  Supplied regression test demonstrates the problem.
>  Please take a look.
> Thanks,
> Andrew.

Best regards, Sergey.

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