tree ec7b90043be6d4ae00920dfe71a452174fc75b98
parent d2afac1e9200478997e308eecc582a073185d7ab
author Nicolas Pena <npm@chromium.org> 1494860347 -0400
committer Chromium commit bot <commit-bot@chromium.org> 1494863653 +0000

Gif: error out on invalid code sizes

From the Gif spec:
'The output codes are of variable length, starting at <code size>+1 bits per
code, up to 12 bits per code. This defines a maximum code value of 4095
(0xFFF).'
'Because the LZW compression used for GIF creates a series of variable length
codes, of between 3 and 12 bits each'

Bug: chromium:722115
Change-Id: Ic9cff99e6012195a6b5173693b029dc710285688
Reviewed-on: https://pdfium-review.googlesource.com/5490
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>