tree 59300cf05358ce2707ab60cf8c95ae64c906720e
parent d5d0039036563731c5a9cde93ef3095743464baa
author Tom Sepez <tsepez@chromium.org> 1717445957 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1717445957 +0000

Avoid safe numerics underflow trap in CJBig2_BitStream::getByteLeft().

Perform range checks on m_dw_ByteIdx in more places.

-- Add comments about valid ranges.
-- rename offset() to setOffset() since the former sounds too much
   like a read accessor method.

Fixed: 343749070
Change-Id: I44e057a009bd0b2a06f22c65ea9b4be311bfdf3f
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/120030
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Thomas Sepez <tsepez@google.com>
Commit-Queue: Tom Sepez <tsepez@chromium.org>