The png library uses setjmp/longjmp to throw exceptions when reading. If this is not set up, the png library calls abort(). This change handles the errors and throws a C++ exception instead. This issue was found by testing images from pngsuite at http://www.schaik.com/pngsuite/. These images are included and a unit test was added to test both images that should be successful and images that should throw an exception.
2 KiB
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2 KiB
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![](/sij/mapnik/raw/commit/0fb718a4fded954023522f5b6420c97d8c6b0233/tests/data/pngsuite/tbbn2c16.png)