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.
143 B
9x9px
143 B
9x9px
![](/sij/mapnik/raw/commit/2351877cad2bbc044e668f835e2561f7743ba53d/tests/data/pngsuite/s09n3p02.png)