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Add comments to force line breaks, parenthesize function arguments that are contatenated strings, etc. -- these kinds of changes improve clang-format's results and also cause emacs cc-mode to match clang-format. After this type of change, most of the time, when clang-format and emacs disagree, clang-format is better.
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Run this: for i in **/*.cc **/*.c **/*.h **/*.hh; do clang-format < $i >| $i.new && mv $i.new $i done
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Use get() and use_count() instead. Add #define NO_POINTERHOLDER_DEPRECATION to remove deprecation markers for these only. This commit also removes all deprecated PointerHolder API calls from qpdf's code except in PointerHolder's test suite, which must continue to test the deprecated APIs.
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Use QPDFObjectHandle::isNameAndEquals, isDictionaryOfType and isStreamOfType.
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When making resources indirect in from_dr, the code was using the wrong owning QPDF, forgetting that from_dr had already been copied using CopyForeignObject.
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Also handle direct annotation, though this is much less likely.
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This makes all integer type conversions that have potential data loss explicit with calls that do range checks and raise an exception. After this commit, qpdf builds with no warnings when -Wsign-conversion -Wconversion is used with gcc or clang or when -W3 -Wd4800 is used with MSVC. This significantly reduces the likelihood of potential crashes from bogus integer values. There are some parts of the code that take int when they should take size_t or an offset. Such places would make qpdf not support files with more than 2^31 of something that usually wouldn't be so large. In the event that such a file shows up and is valid, at least qpdf would raise an error in the right spot so the issue could be legitimately addressed rather than failing in some weird way because of a silent overflow condition.