On Fri, 21 May 2021 19:24:19 GMT, Jose Pereda <jper...@openjdk.org> wrote:

>> This PR limits the `tableIndex` value, used by the LZWDecoder algorithm in 
>> `GIFImageLoader2`, to avoid a potential AIOOB exception that happens on some 
>> animated GIFs, to the maximum size of the tables used (4096). 
>> 
>> In some occasions loading an animated GIF like the one used in the included 
>> test, doesn't throw such exception, because we `allow partially loaded 
>> animated images` in `ImageStorage`, but only a few frames are loaded.
>> 
>> In theory, greater values of such index would operate over completely full 
>> tables, so there is no need to add new values in this case, and therefore, 
>> there is no risk in limiting the value to 4096.
>> 
>> This PR will prevent the exception and all the frames should load. The 
>> included test passes now (and fails loading only 10 frames out of 44 without 
>> the proposed fix).
>
> Jose Pereda has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   Modify test to avoid online resources

@jperedadnr Since you're looking at this already, can you check if 
https://bugs.openjdk.java.net/browse/JDK-8209560 is related?

-------------

PR: https://git.openjdk.java.net/jfx/pull/513

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