tree 8a946f8827f80c327a44197b2e2bb416e0a2cfdd
parent 874b62712a9aff78584548c6a2e66ffaaa011519
author Lei Zhang <thestig@chromium.org> 1599782503 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1599782503 +0000

Use CheckedNumerics to calculate pitch in CalculatePitchAndSize().

In CFX_DIBitmap::CalculatePitchAndSize(), instead of manually avoiding
integer overflow when calculating the pitch, use CheckedNumerics instead
by instantiating a FX_SAFE_UINT32.

This raises the limit for the maximum possible pitch value in some
cases, such that the manual integer overflow check for the size value is
the limiting factor for successful calculations.

Bug: chromium:1124660
Change-Id: I83ec7fe8eff69cc4101dfecf4d8360bd9dea39f2
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/73397
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>