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2019-06-22In shippable code, favor smart pointers (fixes #235)Jay Berkenbilt
Use PointerHolder in several places where manually memory allocation and deallocation were being used. This helps to protect against memory leaks when exceptions are thrown in surprising places.
2019-06-21Fix sign and conversion warnings (major)Jay Berkenbilt
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.
2018-02-04Remove use of std::abs (fixes #172)Jay Berkenbilt
Different compilers want different choices of headers for std::abs. It's easier to just to not use it.
2018-01-15Fixes for clangJay Berkenbilt
2018-01-14Minor fixes to Pl_PNGFilterJay Berkenbilt
Fix comment, remove restriction that doesn't actually matter.
2017-12-26Add tests for new PNG filtersJay Berkenbilt
2017-12-25Correct errors in PNG filters and make use from libraryJay Berkenbilt
2017-12-25Initial implementation of other PNG decode filtersCasey Rojas
Initial implementation provided by Casey Rojas <crojas@infotechfl.com> Some problems are fixed in a subsequent commit.
2017-08-31PNGFilter: Better range checking for columnsJay Berkenbilt
2017-08-29Pl_PNGFilter: disallow columns = 0Jay Berkenbilt
2013-03-04Remove all old-style casts from C++ codeJay Berkenbilt
2012-06-20ABI change: fix use of off_t, size_t, and integer typesJay Berkenbilt
Significantly improve the code's use of off_t for file offsets, size_t for memory sizes, and integer types in cases where there has to be compatibility with external interfaces. Rework sections of the code that would have prevented qpdf from working on files larger than 2 (or maybe 4) GB in size.
2009-10-12do DLL_EXPORT only in header files and only at the class or top-level ↵Jay Berkenbilt
function level git-svn-id: svn+q:///qpdf/trunk@796 71b93d88-0707-0410-a8cf-f5a4172ac649
2009-09-26removed qexc; non-compatible ABI changeJay Berkenbilt
git-svn-id: svn+q:///qpdf/trunk@709 71b93d88-0707-0410-a8cf-f5a4172ac649
2009-09-26more dll exportsJay Berkenbilt
git-svn-id: svn+q:///qpdf/trunk@697 71b93d88-0707-0410-a8cf-f5a4172ac649
2008-04-29update release date to actual daterelease-qpdf-2.0Jay Berkenbilt
git-svn-id: svn+q:///qpdf/trunk@599 71b93d88-0707-0410-a8cf-f5a4172ac649