On Tue, 29 Jul 2025 17:22:09 GMT, Phil Race <p...@openjdk.org> wrote:
>> Jayathirth D V has updated the pull request with a new target base due to a
>> merge or a rebase. The incremental webrev excludes the unrelated changes
>> brought in by the merge/rebase. The pull request contains five additional
>> commits since the last revision:
>>
>> - Update test to handle all regression cases
>> - Add checks at other places also
>> - Merge remote-tracking branch 'upstream/master' into jpeg_getImageTypes
>> - Check only for negative index
>> - 8364135: JPEGImageReader.getImageTypes() should throw exception for
>> non-zero image index
>
> src/java.desktop/share/classes/com/sun/imageio/plugins/jpeg/JPEGImageReader.java
> line 907:
>
>> 905: if (imageIndex != 0) {
>> 906: throw new IndexOutOfBoundsException("imageIndex != 0!");
>> 907: }
>
> There are JPEG streams with > 1.
> And elsewhere we handle it. Look at hasNextImage()
>
> Is this method the sole place where -1 would not throw the right exception ?
Thanks for the inputs.
getWidth(), getHeight(), getRawImageType() also need similar check.
What i have noticed is for all negative indices apart from "-1" we end up in
gotoImage() function and it throws appropriate exception. Only getWidth(),
getHeight(), getRawImageType() & getImageTypes() we don't throw proper
exception according to spec when "-1" index is used. Also in case of
getRawImageType() we actually throw NPE when "-1" index is passed.
So i have updated the code to add additional check for negative index at these
places also.
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PR Review Comment: https://git.openjdk.org/jdk/pull/26522#discussion_r2289860006
