Chatty coredumps (on empty message file?) after startup

Reproduction:

Open Chatty
Wait a moment
Coredump

The strace shows it segfaults from a number where the last message was a smiley emoji.

[pid  1289] openat(AT_FDCWD, "/home/purism/.purple/logs/mm-sms/sms/%2b12062405820", O_RDONLY|O_NONBLOCK|O
_CLOEXEC|O_DIRECTORY) = 17
[pid  1289] fstat(17, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
[pid  1289] getdents64(17, /* 6 entries */, 32768) = 272
[pid  1289] getdents64(17, /* 0 entries */, 32768) = 0
[pid  1289] close(17)                   = 0
[pid  1289] openat(AT_FDCWD, "/home/purism/.purple/logs/mm-sms/sms/%2b12062405820", O_RDONLY|O_NONBLOCK|O
_CLOEXEC|O_DIRECTORY) = 17
[pid  1289] fstat(17, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0
[pid  1289] getdents64(17, /* 6 entries */, 32768) = 272
[pid  1289] getdents64(17, /* 0 entries */, 32768) = 0
[pid  1289] close(17)                   = 0
[pid  1289] openat(AT_FDCWD, "/home/purism/.purple/logs/+12062405820.log", O_RDONLY) = -1 ENOENT (No such
 file or directory)
[pid  1289] openat(AT_FDCWD, "/home/purism/.purple/logs/mm-sms/sms/%2b12062405820/2019-06-29.173248-0700P
DT.html", O_RDONLY) = 17
[pid  1289] fstat(17, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
[pid  1289] fcntl(17, F_GETFL)          = 0x20000 (flags O_RDONLY|O_LARGEFILE)
[pid  1289] fstat(17, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
[pid  1289] read(17, "", 4096)          = 0
[pid  1289] close(17)                   = 0
[pid  1289] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x30} ---
[pid  1290] <... ppoll resumed> )       = 0 (Timeout)
[pid  1293] <... ppoll resumed> <unfinished ...>) = ?
[pid  1291] <... ppoll resumed> <unfinished ...>) = ?
[pid  1293] +++ killed by SIGSEGV (core dumped) +++
[pid  1291] +++ killed by SIGSEGV (core dumped) +++
[pid  1290] +++ killed by SIGSEGV (core dumped) +++
[pid  1296] <... pselect6 resumed> )    = 1 (in [17], left {tv_sec=5, tv_nsec=509352961})
[pid  1289] +++ killed by SIGSEGV (core dumped) +++
read(17, "", 516)                       = 0
exit_group(0)                           = ?
+++ exited with 0 +++
Segmentation fault (core dumped)

purism@pureos:~/.purple$ dpkg -s chatty
Package: chatty
Status: install ok installed
Priority: optional
Section: net
Installed-Size: 389
Maintainer: Andrea Sch�𖽤fer <andrea.schaefer@puri.sm>
Architecture: arm64
Version: 0.0.8~378.gbp7f14cb
Depends: dconf-gsettings-backend | gsettings-backend, libc6 (>= 2.17), libcairo2 (>= 1.2.4), libgdk-pixbu
f2.0-0 (>= 2.22.0), libglib2.0-0 (>= 2.39.90), libgtk-3-0 (>= 3.21.5), libhandy-0.0-0 (>= 0.0.7), libpurp
le0 (>= 2.8.0), libsqlite3-0 (>= 3.5.9)
Suggests: calls
Description: XMPP and SMS messaging
 Chatty is a chat application for XMPP and SMS using
 libpurple and Modemmanager.
Homepage: https://source.puri.sm/Librem5/chatty
purism@pureos:~/.purple$

Backtrace from gdb:

Script started on 2019-07-02 17:09:53-07:00 [TERM="vt220" TTY="/dev/ttyGS0" COLUMNS="80" LINES="24"]
purism@pureos:~$ sudo coredumpctl gdb 1289
           PID: [0;1;39m1289[0m (chatty)
           UID: 1000 (purism)
           GID: 1000 (purism)
        Signal: 11 (SEGV)
     Timestamp: Tue 2019-07-02 16:51:22 PDT (18min ago)
  Command Line: chatty
    Executable: [0;1;39m/usr/bin/chatty[0m
 Control Group: /user.slice/user-1000.slice/session-3.scope
          Unit: session-3.scope
         Slice: user-1000.slice
       Session: 3
     Owner UID: 1000 (purism)
       Boot ID: 565f2b518def4164aa64dec9a6769a92
    Machine ID: 07e36b5d1d804ea9ba1cca2bd52e0dd1
      Hostname: pureos
       Storage: /var/lib/systemd/coredump/core.chatty.1000.565f2b518def4164aa64dec9a6769a92.1289.1562111482000000.lz4
       Message: Process 1289 (chatty) of user 1000 dumped core.
                
                Stack trace of thread 1289:
                #0  0x0000ffff92d1c64c strstr (libc.so.6)
                #1  0x0000ffff93aeb5fc g_strsplit (libglib-2.0.so.0)
                #2  0x0000aaaac7004d9c chatty_conv_parse_message (chatty)
                #3  0x0000aaaac7007248 chatty_blist_update_buddy (chatty)
                #4  0x0000aaaac70087ac chatty_blist_refresh (chatty)
                #5  0x0000aaaac7008fe8 cb_chatty_blist_refresh_timer (chatty)
                #6  0x0000ffff93acb0e4 n/a (libglib-2.0.so.0)
                #7  0x0000ffff93aca51c g_main_context_dispatch (libglib-2.0.so.0)
                #8  0x0000ffff93aca8e8 n/a (libglib-2.0.so.0)
                #9  0x0000ffff93aca984 g_main_context_iteration (libglib-2.0.so.0)
                #10 0x0000ffff93ceeb84 g_application_run (libgio-2.0.so.0)
                #11 0x0000aaaac6ffbd28 main (chatty)
                #12 0x0000ffff92cc0d24 __libc_start_main (libc.so.6)
                #13 0x0000aaaac6ffbd80 $x (chatty)
                #14 0x0000aaaac6ffbd80 $x (chatty)

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Reading symbols from /usr/bin/chatty...Reading symbols from /usr/lib/debug/.build-id/b7/9621f502ce4ab9f205ea1fe1addb37368799a7.debug...done.
done.
[New LWP 1289]
[New LWP 1290]
[New LWP 1293]
[New LWP 1291]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
Core was generated by `chatty'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x0000ffff92d1c64c in strstr () from /lib/aarch64-linux-gnu/libc.so.6
[Current thread is 1 (Thread 0xffff8ef40010 (LWP 1289))]
(gdb) bt
#0  0x0000ffff92d1c64c in strstr () at /lib/aarch64-linux-gnu/libc.so.6
#1  0x0000ffff93aeb5fc in g_strsplit ()
    at /usr/lib/aarch64-linux-gnu/libglib-2.0.so.0
#2  0x0000aaaac7004d9c in chatty_conv_parse_message
    (msg=0x30 <error: Cannot access memory at address 0x30>)
    at ../src/chatty-conversation.c:936
#3  0x0000aaaac7004d9c in chatty_conv_message_get_last_msg
    (buddy=buddy@entry=0xaaaac8b7b5a0) at ../src/chatty-conversation.c:1003
#4  0x0000aaaac7007248 in chatty_blist_update_buddy
    (node=0xaaaac8b7b5a0, list=0xaaaac8b7a1e0)
    at ../src/chatty-buddy-list.c:2157
#5  0x0000aaaac7007248 in chatty_blist_update
    (list=0xaaaac8b7a1e0, node=0xaaaac8b7b5a0)
    at ../src/chatty-buddy-list.c:2204
#6  0x0000aaaac70087ac in chatty_blist_refresh (list=0xaaaac8b7a1e0)
    at ../src/chatty-buddy-list.c:981
#7  0x0000aaaac70087ac in chatty_blist_refresh (list=0xaaaac8b7a1e0)
    at ../src/chatty-buddy-list.c:966
#8  0x0000aaaac7008fe8 in cb_chatty_blist_refresh_timer (list=<optimized out>)
    at ../src/chatty-buddy-list.c:252
#9  0x0000ffff93acb0e4 in  () at /usr/lib/aarch64-linux-gnu/libglib-2.0.so.0
#10 0x0000ffff93aca51c in g_main_context_dispatch ()
    at /usr/lib/aarch64-linux-gnu/libglib-2.0.so.0
--Type <RET> for more, q to quit, c to continue without paging--
#11 0x0000ffff93aca8e8 in  () at /usr/lib/aarch64-linux-gnu/libglib-2.0.so.0
#12 0x0000ffff93aca984 in g_main_context_iteration ()
    at /usr/lib/aarch64-linux-gnu/libglib-2.0.so.0
#13 0x0000ffff93ceeb84 in g_application_run ()
    at /usr/lib/aarch64-linux-gnu/libgio-2.0.so.0
#14 0x0000aaaac6ffbd28 in main (argc=1, argv=0xffffc28c4da8)
    at ../src/main.c:28
(gdb) quit
purism@pureos:~$ exit
exit

Script done on 2019-07-02 17:10:08-07:00 [COMMAND_EXIT_CODE="0"]

Edited Jul 03, 2019 by Todd Weaver

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Chatty coredumps (on empty message file?) after startup