tree 582d91db8c3e732f3f833128fabe932231d58353
parent e9f5e428816b0b6368d78c2fcf4f5a6a1f1ebbe1
author Lei Zhang <thestig@chromium.org> 1568929918 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1568929918 +0000

Better validate Prev entries in trailers.

Prev entries are defined as "The byte offset from the beginning of the
file" so they should not be negative.

Simplify another FX_SAFE_FILESIZE usage along the way.

Change-Id: I596d708ff5a08abcaf9688edbc9e5715b6a30119
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/60970
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>