tree b5aad5414cbd1986027da6472cc562bf3a922b2f
parent b848dc9515743b0332d24834e475ce022c5b3353
author Lei Zhang <thestig@chromium.org> 1550791913 +0000
committer Chromium commit bot <commit-bot@chromium.org> 1550791913 +0000

M73: Fix data ownership in CPDF_ObjectStream.

Make CFX_ReadOnlyMemoryStream capable of holding onto data. Use it in
CPDF_ObjectStream to make the stream data refcounted, instead of letting
CPDF_ObjectStream have ownership.

Commit 0389ff1a incorrectly changed data ownership. Although
CPDF_ObjectStream does not hand out its |data_stream_| directly,
ParseObjectAtOffset() will use it with a local CPDF_SyntaxParser, and
the CPDF_SyntaxParser hands off the data stream to the returned object.

BUG=chromium:933212
TBR=dsinclair@chromium.org

Change-Id: I703735cfa7e2720af3008ec57158fd875d3a0723
Reviewed-on: https://pdfium-review.googlesource.com/c/50955
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
(cherry picked from commit 5f79016feed97837d94f98460fc90896641ba530)
Reviewed-on: https://pdfium-review.googlesource.com/c/51030
Reviewed-by: Lei Zhang <thestig@chromium.org>