tree 4406f3721977421f76aa28bc6b264dcc58c5c077
parent 0b7378afe3dee6db6cff8ee834e758d3a76efa3b
author Tom Sepez <tsepez@chromium.org> 1500308945 -0700
committer Chromium commit bot <commit-bot@chromium.org> 1500309846 +0000

More tightly validate format strings in util.cpp.

Re-work the previous fix to be even more particular
about the input.

Bug: chromium:740166
Change-Id: I6bea3b6a6dd320a83f830b07afd52951be7d1b63
Reviewed-on: https://pdfium-review.googlesource.com/7691
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>