Bug#1120362: libglibmm-2.4-1t64: Segmentation fault on rawtherapee start

[Frank Duckhorn]

Package: libglibmm-2.4-1t64
Version: 2.66.8-2
Severity: normal

Dear Maintainer,

since the last update I get a segmentation fault right after starting the program rawtherapee.
By debugging I found that the segmentation fault occurs in libglibmm.

Here is the backtrace:
#0  0x00007ffff738a680 in Glib::ustring::ustring(Glib::ustring const&) ()
    at /lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#1  0x0000555556220c7d in rtengine::procparams::ColorManagementParams::ColorManagementParams
	(this=this at entry=0x5555568129e0 <(anonymous namespace)::DEFAULT_CMP>)
	at ./rtengine/procparams.cc:2716
#2  0x00005555558ceca4 in __static_initialization_and_destruction_0 () at ./rtgui/histogrampanel.cc:43
#3  _GLOBAL__sub_I_histogrampanel.cc(void) () at ./rtgui/histogrampanel.cc:1966
#4  0x00007ffff5143dd6 in __libc_start_main () at /lib/x86_64-linux-gnu/libc.so.6
#5  0x00005555558da361 in _start ()

It occurs by instantiating "Glib::ustring srgb".

When I install the old version 2.66.8-1 of libglibmm-2.4-1t64 the error is gone and rawtherapee starts without problems.
Therefore I think, that the reason is in the new version of libglibmm and other programs may be affected too.

Best regards,
Frank

-- System Information:
Debian Release: forky/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.11.10-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libglibmm-2.4-1t64 depends on:
ii  libc6              2.41-12
ii  libgcc-s1          15.2.0-7
ii  libglib2.0-0t64    2.86.1-1
ii  libsigc++-2.0-0v5  2.12.1-4
ii  libstdc++6         15.2.0-7

libglibmm-2.4-1t64 recommends no packages.

libglibmm-2.4-1t64 suggests no packages.

-- no debconf information