Specs:

Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.5 LTS
Release:	18.04
Codename:	bionic

/usr/lib/prince/bin/princedebug --version
Prince 12.4
Copyright 2002-2018 YesLogic Pty. Ltd.
Non-commercial License

Problem:
We are attempting to generate a big PDF file with more than 1500 pages and we are getting a segmentation fault trying to converting the document.

prince: Converting document...
prince: debug: pack
prince: debug: font request: bold Ubuntu, sans-serif
prince: debug: font scan: Arial
prince: debug: font scan: Arial, 4 matches
prince: debug: font scan: DejaVu Sans
prince: debug: font scan: DejaVu Sans, 2 matches
prince: debug: font scan: DejaVu LGC Sans
prince: debug: font scan: DejaVu LGC Sans, 0 matches
prince: debug: font scan: Liberation Sans
prince: debug: font scan: Liberation Sans, 0 matches
prince: debug: font scan: OpenSymbol
prince: debug: font scan: OpenSymbol, 0 matches
prince: debug: font scan: AR PL UKai CN
prince: debug: font scan: AR PL UKai CN, 0 matches
prince: debug: font scan: AR PL KaitiM GB
prince: debug: font scan: AR PL KaitiM GB, 0 matches
prince: debug: font scan: Kochi Gothic
prince: debug: font scan: Kochi Gothic, 0 matches
prince: debug: font scan: IPAGothic
prince: debug: font scan: IPAGothic, 0 matches
prince: debug: font scan: UnDotum
prince: debug: font scan: UnDotum, 0 matches
prince: debug: font scan: Baekmuk Gulim
prince: debug: font scan: Baekmuk Gulim, 0 matches
prince: debug: font scan: Garuda
prince: debug: font scan: Garuda, 4 matches
prince: debug: font scan: Times New Roman
prince: debug: font scan: Times New Roman, 0 matches
prince: debug: font scan: DejaVu Serif
prince: debug: font scan: DejaVu Serif, 2 matches
prince: debug: font scan: DejaVu LGC Serif
prince: debug: font scan: DejaVu LGC Serif, 0 matches
prince: debug: font scan: Liberation Serif
prince: debug: font scan: Liberation Serif, 0 matches
prince: debug: font scan: AR PL UMing CN
prince: debug: font scan: AR PL UMing CN, 0 matches
prince: debug: font scan: AR PL SungtiL GB
prince: debug: font scan: AR PL SungtiL GB, 0 matches
prince: debug: font scan: Kochi Mincho
prince: debug: font scan: Kochi Mincho, 0 matches
prince: debug: font scan: IPAMincho
prince: debug: font scan: IPAMincho, 0 matches
prince: debug: font scan: UnBatang
prince: debug: font scan: UnBatang, 0 matches
prince: debug: font scan: Baekmuk Batang
prince: debug: font scan: Baekmuk Batang, 0 matches
prince: debug: font scan: Lohit Devanagari
prince: debug: font scan: Lohit Devanagari, 0 matches
prince: debug: font scan: Lohit Bengali
prince: debug: font scan: Lohit Bengali, 0 matches
prince: debug: font scan: Ani
prince: debug: font scan: Ani, 0 matches
prince: debug: font scan: Mukti Narrow
prince: debug: font scan: Mukti Narrow, 0 matches
prince: debug: font scan: Lohit Punjabi
prince: debug: font scan: Lohit Punjabi, 0 matches
prince: debug: font scan: Lohit Gujarati
prince: debug: font scan: Lohit Gujarati, 0 matches
prince: debug: font scan: Lohit Tamil
prince: debug: font scan: Lohit Tamil, 0 matches
prince: debug: font scan: Lohit Telugu
prince: debug: font scan: Lohit Telugu, 0 matches
prince: debug: font scan: Lohit Kannada
prince: debug: font scan: Lohit Kannada, 0 matches
prince: debug: font scan: Lohit Malayalam
prince: debug: font scan: Lohit Malayalam, 0 matches
prince: debug: font scan: Lohit Oriya
prince: debug: font scan: Lohit Oriya, 0 matches
prince: used font: Ubuntu, Bold
prince: debug: font request: bold Arial Unicode MS, Noto Sans, Ubuntu, sans-serif
prince: used font: Arial Unicode MS, Bold
prince: debug: font request: Arial Unicode MS, Noto Sans, Ubuntu, sans-serif
prince: used font: Arial Unicode MS, Regular
prince: debug: font request: serif
prince: used font: Garuda, Book
prince: debug: font request: Arial Unicode MS, Noto Sans, Ubuntu, Noto Sans, Noto Sans Sinhala, sans-serif
prince: debug: font scan: Noto Sans Sinhala
prince: debug: font scan: Noto Sans Sinhala, 1 matches
Segmentation fault

How much RAM do you have? Do smaller documents work? Is this 32-bit or 64-bit?

We have 8GB, currently the process is using ~350MB, smaller documents are working fine (~300 pages). It's 64-bit arch. We also were able to generate this document running the same command on FreeBSD.

Would you be able to run the command through princedebug and email me (mikeday@yeslogic.com) the resulting /tmp/prince.debug and /tmp/prince.strace files?

This issue is fixed in the latest build, thanks for helping us track it down!