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477c7f6a
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2020-06-28T15:54:23
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Fix quadratic runtime in HTML parser
Commit eeb99329 removed an important optimization avoiding quadratic
runtime when repeatedly scanning the input buffer for terminating
characters in the HTML push parser. The related bug is
https://bugzilla.gnome.org/show_bug.cgi?id=444994
Make sure that ctxt->checkIndex is always written and store additional
parser state in ctxt->inSubset which is unused in the HTML parser.
Found by OSS-Fuzz.
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