segmentation fault when trying to load node containing emoji unicode character

[sylvainfaivre]

Version, Operating system
CherryTree 1.7.1 running on Ubuntu 24.04.4 LTS

Describe the bug

On one specific computer, when I navigate to a node containing an emoji unicode character, CherryTree crashes with a segfault.

Same file works fine on other computers with similar setup.

File also works fine on this computer, as long as I don't click the node containing this character.

Same bug happens on other node containing different emoji characters.

To Reproduce

I shared a minimal file that makes CherryTree crash on this computer: https://transfert.free.fr/h4k2akD

Screenshots

On other computer:

On offending computer:

$ cherrytree /home/me/Desktop/passwords/test1.ctb                                                                                                                                                             
[2026-07-24 07:51:53.707] [che] [debug] /home/me/.config/cherrytree/config.cfg parsed
[2026-07-24 07:51:53.707] [che] [debug] currDesktop -> KDE
[2026-07-24 07:51:53.819] [che] [debug] autosave on 10 min
[2026-07-24 07:51:53.900] [che] [debug] Node 618 > testing
[1]    441728 segmentation fault (core dumped)  cherrytree /home/me/Desktop/passwords/test1.ctb

Kernel logs:

2026-07-24T07:51:53.910028+02:00 station kernel: cherrytree[441728]: segfault at 0 ip 0000798a05eef6f4 sp 00007fffba74a098 error 4 in libpango-1.0.so.0.5200.1[798a05edd000+39000] likely on CPU 9 (core 4, socket 0)
2026-07-24T07:51:53.910045+02:00 station kernel: Code: 00 00 00 0f 1f 00 f3 0f 1e fa e9 c7 f0 fe ff 0f 1f 80 00 00 00 00 f3 0f 1e fa e9 97 ea fe ff 0f 1f 80 00 00 00 00 f3 0f 1e fa <48> 8b 07 ff a0 88 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 07 ff a0 90

libpango information:

$ type -a cherrytree
cherrytree is /usr/bin/cherrytree
cherrytree is /bin/cherrytree
$ ldd /bin/cherrytree |grep libpango-1.0
        libpango-1.0.so.0 => /lib/x86_64-linux-gnu/libpango-1.0.so.0 (0x000077e057c9a000)
$ ll /lib/x86_64-linux-gnu/libpango-1.0.so.0
lrwxrwxrwx 1 root root 24 mars  31  2024 /lib/x86_64-linux-gnu/libpango-1.0.so.0 -> libpango-1.0.so.0.5200.1
$ ll /lib/x86_64-linux-gnu/libpango-1.0.so.0.5200.1
-rw-r--r-- 1 root root 424K mars  31  2024 /lib/x86_64-linux-gnu/libpango-1.0.so.0.5200.1
$ dpkg -S /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
libpango-1.0-0:amd64: /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
$ dpkg -S /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0.5200.1
libpango-1.0-0:amd64: /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0.5200.1
$ dpkg -l |grep libpango
ii  libpango-1.0-0:amd64                                        1.52.1+ds-1build1                                amd64        Layout and rendering of internationalized text
ii  libpango-1.0-0:i386                                         1.52.1+ds-1build1                                i386         Layout and rendering of internationalized text
ii  libpango1.0-dev:amd64                                       1.52.1+ds-1build1                                amd64        Development files for the Pango
ii  libpangocairo-1.0-0:amd64                                   1.52.1+ds-1build1                                amd64        Layout and rendering of internationalized text
ii  libpangocairo-1.0-0:i386                                    1.52.1+ds-1build1                                i386         Layout and rendering of internationalized text
ii  libpangoft2-1.0-0:amd64                                     1.52.1+ds-1build1                                amd64        Layout and rendering of internationalized text
ii  libpangoft2-1.0-0:i386                                      1.52.1+ds-1build1                                i386         Layout and rendering of internationalized text
ii  libpangomm-1.4-1v5:amd64                                    2.46.4-1build3                                   amd64        C++ Wrapper for pango (shared libraries)
ii  libpangomm-2.48-1t64:amd64                                  2.52.0-1build1                                   amd64        C++ Wrapper for pango (shared libraries)
ii  libpangoxft-1.0-0:amd64                                     1.52.1+ds-1build1                                amd64        Layout and rendering of internationalized text

Same commands give exact same information on another system that loads the file without problem.

I would be happy to help further troubleshooting.

[giuspen]

Thanks for reporting this @sylvainfaivre I will try to follow up on this tomorrow, I will let you know

[giuspen]

I did see if I could reproduce the crash on my Linux Mint which is based on Ubuntu 24.04 but couldn't. I am on holiday at the moment, I will get back to you on this with something for you to try in about 10 days.