tree 3e23e79fd397cd8c1cef363356b3e7862ac1561e
parent 0e744a2a712c01ca67cdd6161da561e2c6bc5925
author Lei Zhang <thestig@chromium.org> 1591059259 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1591059259 +0000

Fix an UnownedPtr error in CXFA_FFTabOrderPageWidgetIterator.

CPDFXFA_Page::GetNextXFAAnnot() and GetFirstOrLastXFAAnnot() can
potentially trigger an UnownedPtr error in
CXFA_FFTabOrderPageWidgetIterator. Fix the issue by using a RetainPtr to
ensure the object in question has the right live time.

This is a secondary issue from a previous bug report. Add a test case
for that.

Bug: chromium:980161
Change-Id: I895c3b6634aa0f7a68d2b44cc0307afc64716c78
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/70252
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>