tree 476875676a203a505498031ec0df2770ea9b991b
parent 91bf19ba0e52a3fc8f2bf52a145cbcaeb115d4e1
author Tom Sepez <tsepez@chromium.org> 1623266869 +0000
committer Pdfium LUCI CQ <pdfium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1623266869 +0000

Better size calculations for struct PixelWeight

This CL implements many of the suggestions I made on
  https://pdfium-review.googlesource.com/c/pdfium/+/81650

so that those changes can be made independently.

-- Use safe arithmetic when calculating allocation sizes.
-- Make calculations robust in face of changes to PixelWeight.
-- Add sanity check on `dest_max` argument.

Change-Id: Idd4fef6f6784fbd6175eb7d7927398e0907e9dc5
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/81671
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>