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ArrayIndexOutOfBoundsException in CCITTFaxDecoderStream.decode2D

See original GitHub issue

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 25
	at com.twelvemonkeys.imageio.plugins.tiff.CCITTFaxDecoderStream.decode2D(CCITTFaxDecoderStream.java:184)
	at com.twelvemonkeys.imageio.plugins.tiff.CCITTFaxDecoderStream.decodeRowType6(CCITTFaxDecoderStream.java:275)
	at com.twelvemonkeys.imageio.plugins.tiff.CCITTFaxDecoderStream.decodeRow(CCITTFaxDecoderStream.java:287)
	at com.twelvemonkeys.imageio.plugins.tiff.CCITTFaxDecoderStream.fetch(CCITTFaxDecoderStream.java:114)
	at com.twelvemonkeys.imageio.plugins.tiff.CCITTFaxDecoderStream.read(CCITTFaxDecoderStream.java:439)
	at java.io.DataInputStream.readFully(DataInputStream.java:195)
	at java.io.DataInputStream.readFully(DataInputStream.java:169)
	at com.twelvemonkeys.imageio.plugins.tiff.TIFFImageReader.readStripTileData(TIFFImageReader.java:1508)
	at com.twelvemonkeys.imageio.plugins.tiff.TIFFImageReader.read(TIFFImageReader.java:934)
	at javax.imageio.ImageIO.read(ImageIO.java:1448)
	at javax.imageio.ImageIO.read(ImageIO.java:1308)
	at TwelveMonkeysTest.main(TwelveMonkeysTest.java:57)

223423.zip

This file comes from a stream in a PDF file, I constructed the TIF header myself. The PDF file displays properly in Adobe Reader, ghostscript and in PDF.js.

I tried to change the offending code line to do nothing if the index is out of bounds and that works, but I don’t know if this the best solution.

Unrelated and unimportant: I looked at the changes since we copied the code from CCITTFaxDecoderStream.java - why does getNextChangingElement() declare a “throws IOException”? I can’t see where this would be thrown.