pdftex core dump when including certain pdf files
Andre Wobst <[email protected]>
| Newsgroups | gmane.comp.tex.pdftex |
|---|---|
| Message-ID | <[email protected]> |
Hi, We recently got told by a PyX user, that recent versions of pdftex (in our tests on Ubuntu 16.04) core dumps when embedding certain PDF files. An example is attached to the bug report https://sourceforge.net/p/pyx/mailman/message/35118842/ We investigated in detail what causes the issue and found out that this happens when the font descriptors contain non-integer values. While usually those data can be taken from the AFM file, we have a fallback in place (similar to pdftex) to extract estimated values from the font data directly. For non-integer values of StemV pdftex core dumps. In the PDF reference the StemV value is said to be a "number" which are specified to be either integers or floats. (In the mean time we applied a patch to PyX to output integer values for the font descriptor values.) Note that the issue is not present in an older version of TeX Live on OS X. Best, André -- by _ _ _ Dr. André Wobst, Amselweg 22, 85716 Unterschleißheim / \ \ / ) [email protected], http://www.wobsta.de/ / _ \ \/\/ / PyX - High quality PostScript and PDF figures (_/ \_)_/\_/ with Python & TeX: visit http://pyx.sourceforge.net/