Fedora Linux 42, Playing on QT client, but loading the same save file in the gtk client also reproduces the crash.
I loaded a saved game. Hit the turn done button. Map disappeared; freeciv menu screen displayed.
I tried loading a few earlier autosaves. Same problem.
/var/log/messages shows an assertion failure, and a core dump being processed:
Nov 22 10:49:07 linuxgame freeciv-gtk4[52447]: 1: in gui_to_map_pos() [mapview_common.c::626]: assertion 'dx >= 0 && dx < W' failed.
Nov 22 10:49:07 linuxgame freeciv-gtk4[52447]: 1: Please report this message at https://redmine.freeciv.org/projects/freeciv
Nov 22 10:49:07 linuxgame freeciv-gtk4[52447]: 1: in gui_to_map_pos() [mapview_common.c::626]: assertion 'dx >= 0 && dx < W' failed.
Nov 22 10:49:07 linuxgame freeciv-gtk4[52447]: 1: Please report this message at https://redmine.freeciv.org/projects/freeciv
Nov 22 10:49:07 linuxgame audit[53055]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=53055 comm="freeciv-server" exe="/usr/bin/freeciv-server" sig=11 res=1
Nov 22 10:49:07 linuxgame kernel: freeciv-server[53055]: segfault at 0 ip 00005621a9b7dcf9 sp 00007fff7d946bf0 error 4 in freeciv-server[19fcf9,5621a99de000+2fd000] likely on CPU 2 (core 2, socket 0)
Nov 22 10:49:07 linuxgame kernel: Code: 41 56 41 55 41 54 53 48 83 ec 78 44 89 45 8c 64 48 8b 04 25 28 00 00 00 48 89 45 c8 31 c0 84 d2 0f 84 c4 03 00 00 48 8b 46 58 <8b> 00 8b 0d bb 7d 09 01 99 f7 f9 89 55 b4 89 45 b0 f6 05 4f 7d 09
Nov 22 10:49:07 linuxgame systemd-coredump[53130]: Process 53055 (freeciv-server) of user 1000 terminated abnormally with signal 11/SEGV, processing...
Nov 22 10:49:07 linuxgame audit: BPF prog-id=143 op=LOAD
Nov 22 10:49:07 linuxgame audit: BPF prog-id=144 op=LOAD
Nov 22 10:49:07 linuxgame audit: BPF prog-id=145 op=LOAD
Nov 22 10:49:07 linuxgame systemd[1]: Started systemd-coredump@7-53130-0.service - Process Core Dump (PID 53130/UID 0).
Nov 22 10:49:07 linuxgame audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@7-53130-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Nov 22 10:49:07 linuxgame audit: BPF prog-id=146 op=LOAD
Nov 22 10:49:07 linuxgame audit: BPF prog-id=147 op=LOAD
Nov 22 10:49:07 linuxgame audit: BPF prog-id=148 op=LOAD
Nov 22 10:49:07 linuxgame systemd[1]: Started drkonqi-coredump-processor@7-53130-0.service - Pass systemd-coredump journal entries to relevant user for potential DrKonqi handling.
Nov 22 10:49:07 linuxgame audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=drkonqi-coredump-processor@7-53130-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Nov 22 10:49:07 linuxgame abrt-dump-journal-core[1023]: Failed to obtain all required information from journald
Nov 22 10:49:08 linuxgame systemd-coredump[53131]: Process 53055 (freeciv-server) of user 1000 dumped core.#012#012Module /usr/bin/freeciv-server from rpm freeciv-3.2.1-1.fc42.x86_64#012Module libpcre2-8.so.0 from rpm pcre2-10.46-1.fc42.x86_64#012Module libcrypt.so.2 from rpm libxcrypt-4.5.2-1.fc42.x86_64#012Module libselinux.so.1 from rpm libselinux-3.8-3.fc42.x86_64#012Module libbrotlicommon.so.1 from rpm brotli-1.1.0-6.fc42.x86_64#012Module libsasl2.so.3 from rpm cyrus-sasl-2.1.28-30.fc42.x86_64#012Module libevent-2.1.so.7 from rpm libevent-2.1.12-15.fc42.x86_64#012Module libkeyutils.so.1 from rpm keyutils-1.6.3-5.fc42.x86_64#012Module libkrb5support.so.0 from rpm krb5-1.21.3-6.fc42.x86_64#012Module libcom_err.so.2 from rpm e2fsprogs-1.47.2-3.fc42.x86_64#012Module libk5crypto.so.3 from rpm krb5-1.21.3-6.fc42.x86_64#012Module libkrb5.so.3 from rpm krb5-1.21.3-6.fc42.x86_64#012Module libunistring.so.5 from rpm libunistring-1.1-9.fc42.x86_64#012Module libicudata.so.76 from rpm icu-76.1-4.fc42.x86_64#012Module libbrotlidec.so.1 from rpm brotli-1.1.0-6.fc42.x86_64#012Module libgssapi_krb5.so.2 from rpm krb5-1.21.3-6.fc42.x86_64#012Module libcrypto.so.3 from rpm openssl-3.2.6-2.fc42.x86_64#012Module libssl.so.3 from rpm openssl-3.2.6-2.fc42.x86_64#012Module libpsl.so.5 from rpm libpsl-0.21.5-5.fc42.x86_64#012Module libssh.so.4 from rpm libssh-0.11.3-1.fc42.x86_64#012Module libidn2.so.0 from rpm libidn2-2.3.8-1.fc42.x86_64#012Module libnghttp2.so.14 from rpm nghttp2-1.64.0-3.fc42.x86_64#012Module libtinfo.so.6 from rpm ncurses-6.5-5.20250125.fc42.x86_64#012Module libz.so.1 from rpm zlib-ng-2.2.5-2.fc42.x86_64#012Module libzstd.so.1 from rpm zstd-1.5.7-1.fc42.x86_64#012Module liblzma.so.5 from rpm xz-5.8.1-2.fc42.x86_64#012Module libbz2.so.1 from rpm bzip2-1.0.8-20.fc42.x86_64#012Module libicuuc.so.76 from rpm icu-76.1-4.fc42.x86_64#012Module libcurl.so.4 from rpm curl-8.11.1-6.fc42.x86_64#012Module libreadline.so.8 from rpm readline-8.2-13.fc42.x86_64#012Stack trace of thread 53055:#012#0 0x00005621a9b7dcf9 invasion_funct (/usr/bin/freeciv-server + 0x19fcf9)#012#1 0x00005621a9b82beb find_something_to_kill (/usr/bin/freeciv-server + 0x1a4beb)#012#2 0x00005621a9b77e3e kill_something_with (/usr/bin/freeciv-server + 0x199e3e)#012#3 0x00005621a9b7a21b military_advisor_choose_build (/usr/bin/freeciv-server + 0x19c21b)#012#4 0x00005621a9b59730 dai_do_last_activities (/usr/bin/freeciv-server + 0x17b730)#012#5 0x00005621a99ecf34 end_phase.lto_priv.0 (/usr/bin/freeciv-server + 0xef34)#012#6 0x00005621a9a0323e srv_main (/usr/bin/freeciv-server + 0x2523e)#012#7 0x00005621a99e44a9 main (/usr/bin/freeciv-server + 0x64a9)#012#8 0x00007f76a72e6575 __libc_start_call_main (libc.so.6 + 0x3575)#012#9 0x00007f76a72e6628 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3628)#012#10 0x00005621a99e4ea5 _start (/usr/bin/freeciv-server + 0x6ea5)#012ELF object binary architecture: AMD x86-64
Nov 22 10:49:08 linuxgame systemd[1]: systemd-coredump@7-53130-0.service: Deactivated successfully.
Nov 22 10:49:08 linuxgame audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@7-53130-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Nov 22 10:49:08 linuxgame audit: BPF prog-id=145 op=UNLOAD
Nov 22 10:49:08 linuxgame audit: BPF prog-id=144 op=UNLOAD
Nov 22 10:49:08 linuxgame audit: BPF prog-id=143 op=UNLOAD
Nov 22 10:49:08 linuxgame freeciv-gtk4[52447]: 1: Gtk: gtk_window_destroy: assertion 'GTK_IS_WINDOW (window)' failed
Nov 22 10:49:08 linuxgame freeciv-gtk4[52447]: 1: Lost connection to server: server disconnected.
Nov 22 10:49:08 linuxgame systemd[1]: systemd-coredump@7-53130-0.service: Consumed 738ms CPU time, 247.9M memory peak.
Nov 22 10:49:08 linuxgame systemd[1]: drkonqi-coredump-processor@7-53130-0.service: Deactivated successfully.
Nov 22 10:49:08 linuxgame audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=drkonqi-coredump-processor@7-53130-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Nov 22 10:49:08 linuxgame systemd[1438]: Started drkonqi-coredump-launcher@14-53132-0.service - Launch DrKonqi for a systemd-coredump crash (PID 53132/UID 0).
Nov 22 10:49:08 linuxgame drkonqi-coredump-launcher[53142]: Unable to find file for pid 53055 expected at "kcrash-metadata/freeciv-server.48dbca489d2d47cbbe6f7d4b02a3389b.53055.ini"
Nov 22 10:49:08 linuxgame drkonqi-coredump-launcher[53142]: Nothing handled the dump :O
Nov 22 10:49:08 linuxgame audit: BPF prog-id=148 op=UNLOAD
Nov 22 10:49:08 linuxgame audit: BPF prog-id=147 op=UNLOAD
Nov 22 10:49:08 linuxgame audit: BPF prog-id=146 op=UNLOAD
Nov 22 10:49:10 linuxgame abrt-server[53145]: Deleting problem directory ccpp-2025-11-22-10:49:08.762831-53055 (dup of ccpp-2025-11-22-10:28:49.263056-48263)
Nov 22 10:49:10 linuxgame abrt-applet[1897]: g_app_info_should_show: assertion 'G_IS_APP_INFO (appinfo)' failed
Nov 22 10:49:10 linuxgame abrt-notification[53195]: Process 48263 (freeciv-server) crashed in invasion_funct()
Nov 22 10:49:10 linuxgame abrt-applet[1897]: g_app_info_should_show: assertion 'G_IS_APP_INFO (appinfo)' failed
Nov 22 10:49:13 linuxgame systemd[1438]: app-org.freeciv.gtk4@72dc0041a76743509e461351263b0b51.service: Consumed 4min 29.753s CPU time, 583.1M memory peak.