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authorHenrique Nakashima <hnakashima@chromium.org>2018-04-11 21:55:49 +0000
committerChromium commit bot <commit-bot@chromium.org>2018-04-11 21:55:49 +0000
commitb92ec18fdccd196035e02f3232c0b730637ac815 (patch)
treea78ea05f4b90265dd6451a6a626bdb3a771b689b /testing
parentc763970de6e749123af76170c16bbc3929058437 (diff)
downloadpdfium-b92ec18fdccd196035e02f3232c0b730637ac815.tar.xz
Fix crash when ColorSpace references itself directly.
Also fixes any problems with cycles between colorspaces. Past fixes have solved problems with CPDF_DocPageData::GetColorSpace() calling itself and CPDF_DocPageData::GetColorSpace() calling CPDF_ColorSpace::Load() and vice versa. They have not solved CPDF_ColorSpace::Load() calling itself. This CL repurposes the |pVisited| set to ensure CPDF_ColorSpace::Load() does not try to load a colorspace as a dependency of itself and creates |pVisitedLocal| to ensure CPDF_DocPageData::GetColorSpace() does not create a similar circular dependency not involving CPDF_ColorSpace::Load(). Bug: chromium:828206 Change-Id: Ib2d0ec494be169135607f3651e0f70627b26ebd7 Reviewed-on: https://pdfium-review.googlesource.com/29810 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
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