tree 434e77b043407957a4c244541d2affa00d50fd60
parent d18b8674378b104a9b5bb1f015e3f92fc174673e
author Nicolas Pena <npm@chromium.org> 1484074816 -0500
committer Chromium commit bot <commit-bot@chromium.org> 1484077751 +0000

Restrict code size in CGifLZWDecoder

The code_size variable is the number of bits. We should make sure that
the size is at most 31 to avoid having undefined shifts etc.

BUG=620661

Change-Id: Ia533386d01de93a55048cfd63d63989b2731a210
Reviewed-on: https://pdfium-review.googlesource.com/2161
Reviewed-by: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Nicolás Peña <npm@chromium.org>