tree af3942be6aaf45858a0faf598e97c0d44afe5003
parent c4ffab7a2308dabdc2ba1355902d94f7cc3b2d8f
author Dan Sinclair <dsinclair@chromium.org> 1518707385 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1518707385 +0000

Add limit to number of formcalc expressions

Currently it's possible to create a formcalc script which creates a
large number of expressions. This will eventually cause stack exhaustion
as we try to allocate the needed expression objects.

This CL limits the number of parsed expressions in the PostExpression
section in order to keep from failing due to stack overflow.

Bug: chromium:799721
Change-Id: I69fca35db7f75ef97aec21c22fc06d926dfe2df6
Reviewed-on: https://pdfium-review.googlesource.com/26870
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>