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authorDan Sinclair <dsinclair@chromium.org>2017-06-20 08:56:29 -0400
committerChromium commit bot <commit-bot@chromium.org>2017-06-20 13:09:44 +0000
commit3962d80bde19074227c34f4615b0446f4975a098 (patch)
tree764156d1ee8e0d626ae0474027da1e3850c8ef34 /core/fxcodec/lbmp
parent4db9046e56c884a350fa2c5087f8d5b8110463c4 (diff)
downloadpdfium-3962d80bde19074227c34f4615b0446f4975a098.tar.xz
Cleanup tiling and shading patterns in correct order
When a Shading is created we have both a ShadingPattern and a ShadingObject. The ShadingPattern is a ref-counted object that is stored in the CPDF_DocPageData. The ShadingObject, when we have a tiling pattern parent, is stored in the CPDF_Form of the tiling pattern. Currently during destruction it is possible for the ShadingPattern to get cleaned up before the ShadingObject which causes the UnownedPtr probe to fire. This CL loops over all patterns and for each Tiling pattern forces the CPDF_Form to get cleared. This then removes the ShadingObject before we remove the ShadingPattern. Bug: chromium:728992 Change-Id: Ife65607aa97f69440b03028981b5575b1e297093 Reviewed-on: https://pdfium-review.googlesource.com/6651 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: Nicolás Peña <npm@chromium.org>
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