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authorWei Li <weili@chromium.org>2017-03-23 09:45:04 -0700
committerChromium commit bot <commit-bot@chromium.org>2017-03-23 17:05:05 +0000
commit6bdd824188bc9a2e6b24b5752a3170ce10185c1d (patch)
tree272c426e10e66315ef2993d2d8712029aa6a90b5 /fpdfsdk/fxedit
parent409b663d532d4d6f09a1188fa3b9ac4044708bc4 (diff)
downloadpdfium-6bdd824188bc9a2e6b24b5752a3170ce10185c1d.tar.xz
Fix two CloneNonCycle issues
CloneNonCycle() tries to detect cyclic object references without copying them. There are two issues: -- for elements in an array or a dictionary, they should be able to refer to the same object, which are not cyclic; -- for cyclic referenced elements in an array or a dictionary, do not clone the element at all. Having nullptr or <key, nullptr> as an element, like we did before, might cause crash when the element being accessed. BUG=chromium:701860 Change-Id: Id0304accde76ed06fa5ce640994c7628359600fb Reviewed-on: https://pdfium-review.googlesource.com/3156 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
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