Bug#1102505: linphone-desktop: Cannot find libapp-plugin.so without LD_LIBRARY_PATH, segfaults

[Fiona Klute]

Package: linphone-desktop
Version: 5.2.6+dfsg-1
Severity: grave
Justification: renders package unusable

Linphone 5.2.6+dfsg-1 crashes during startup:

$ linphone
linphone: error while loading shared libraries: libapp-plugin.so: cannot
open shared object file: No such file or directory

The file exists in the same location as for previous versions, on my
amd64 system at
/usr/lib/x86_64-linux-gnu/linphone-desktop/libapp-plugin.so. Setting
LD_LIBRARY_PATH to include the directory passes that, but then segfaults:

$ LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/linphone-desktop linphone
QObject::connect: No such signal
App::applicationStateChanged(Qt::ApplicationState) in
./linphone-app/src/app/App.cpp:271
Set TimeZone to  "Europe/Berlin"
Speicherzugriffsfehler

Backtrace when running the same command in GDB:

Reading symbols from linphone...
Reading symbols from
/usr/lib/debug/.build-id/c0/10f0a4cfdba7d00b7fe025b8ca8561b99d60d1.debug...
(gdb) run
Starting program: /usr/bin/linphone
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
QObject::connect: No such signal
App::applicationStateChanged(Qt::ApplicationState) in
./linphone-app/src/app/App.cpp:271
Set TimeZone to  "Europe/Berlin"

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff5639974 in registerFont (fnt=0x7fffffffdb50)
     at text/qfontdatabase.cpp:1051
warning: 1051	text/qfontdatabase.cpp: Datei oder Verzeichnis nicht gefunden
(gdb) bt
#0  0x00007ffff5639974 in registerFont (fnt=0x7fffffffdb50)
     at text/qfontdatabase.cpp:1051
#1  QFontDatabasePrivate::addAppFont
     (this=this at entry=0x7ffff5b0e5c0 <(anonymous
namespace)::Q_QGS_privateDb::innerFunction()::holder>, fontData=...,
fileName=...)
     at text/qfontdatabase.cpp:2482
#2  0x00007ffff563d113 in QFontDatabase::addApplicationFont (fileName=...)
     at text/qfontdatabase.cpp:2534
#3  0x0000555555682bb3 in AppController::AppController
     (this=this at entry=0x7fffffffddc8, argc=@0x7fffffffddbc: 1,
     argc at entry=@0x7fffffffddbc: <optimized out>, argv=0x7fffffffdf58)
     at ./linphone-app/src/app/AppController.cpp:99
#4  0x00005555556003d9 in main (argc=<optimized out>, argv=<optimized out>)
     at ./linphone-app/src/app/main.cpp:78


-- System Information:
Debian Release: trixie/sid
   APT prefers unstable-debug
   APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1,
'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.21-amd64 (SMP w/16 CPU threads; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE
not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linphone-desktop depends on:
ii  libbctoolbox2                           5.3.105-1
ii  libbelcard1                             5.3.105-3
ii  libc6                                   2.41-6
ii  libgcc-s1                               14.2.0-19
ii  liblinphone++12                         5.3.105-5
ii  liblinphone12                           5.3.105-5
ii  libmediastreamer2-14                    1:5.3.105+dfsg-5
ii  libqt5core5t64                          5.15.15+dfsg-5
ii  libqt5dbus5t64                          5.15.15+dfsg-5
ii  libqt5gui5t64                           5.15.15+dfsg-5
ii  libqt5multimedia5                       5.15.15-2
ii  libqt5network5t64                       5.15.15+dfsg-5
ii  libqt5qml5 [qtdeclarative-abi-5-15-15]  5.15.15+dfsg-3
ii  libqt5quick5                            5.15.15+dfsg-3
ii  libqt5quickcontrols2-5                  5.15.15+dfsg-2
ii  libqt5svg5                              5.15.15-2
ii  libqt5texttospeech5                     5.15.15-2
ii  libqt5widgets5t64                       5.15.15+dfsg-5
ii  libstdc++6                              14.2.0-19
ii  linphone-common                         5.3.105-5
ii  qml-module-qt-labs-platform             5.15.15+dfsg-2
ii  qml-module-qtgraphicaleffects           5.15.15-2
ii  qml-module-qtquick-controls             5.15.15-2
ii  qml-module-qtquick-controls2            5.15.15+dfsg-2
ii  qml-module-qtquick-dialogs              5.15.15-2
ii  qml-module-qtquick-layouts              5.15.15+dfsg-3
ii  qml-module-qtquick-shapes               5.15.15+dfsg-3
ii  qml-module-qtquick-window2              5.15.15+dfsg-3
ii  qml-module-qtquick2                     5.15.15+dfsg-3

Versions of packages linphone-desktop recommends:
pn  qt5-gtk2-platformtheme  <none>

linphone-desktop suggests no packages.

-- debconf-show failed