GIMP crashed just after saving

[StSav012]

I have not done anything in particular. Just saved a new project with File → Save As… In several seconds, GIMP crashed. I'm not sure that the saving is relevant.

I'm using Ubuntu 19.10.

Auto-generated report follows.

```
GNU Image Manipulation Program version 2.10.8
git-describe: GIMP_2_10_6-294-ga967e8d2c2
C compiler:
 Using built-in specs.
 COLLECT_GCC=gcc
 COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
 OFFLOAD_TARGET_NAMES=nvptx-none
 OFFLOAD_TARGET_DEFAULT=1
 Target: x86_64-linux-gnu
 Configured with: ../src/configure -v --with-pkgversion='Ubuntu 8.2.0-13ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-8 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
 Thread model: posix
 gcc version 8.2.0 (Ubuntu 8.2.0-13ubuntu1)

using GEGL version 0.4.14 (compiled against version 0.4.12)
using GLib version 2.62.4 (compiled against version 2.58.1)
using GdkPixbuf version 2.40.0 (compiled against version 2.38.0)
using GTK+ version 2.24.32 (compiled against version 2.24.32)
using Pango version 1.42.3 (compiled against version 1.42.3)
using Fontconfig version 2.13.1 (compiled against version 2.13.0)
using Cairo version 1.16.0 (compiled against version 1.16.0)

```
> fatal error: Aborted

Stack trace:
```

# Stack traces obtained from PID 3298 - Thread 3298 #

[New LWP 3301]
[New LWP 3302]
[New LWP 3303]
[New LWP 3304]
[New LWP 3305]
[New LWP 3322]
[New LWP 6455]
[New LWP 6902]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__libc_read (nbytes=256, buf=0x7ffe80d05690, fd=14) at ../sysdeps/unix/sysv/linux/read.c:26
  Id Target Id Frame
* 1 Thread 0x7fcb70d76e00 (LWP 3298) "gimp-2.10" __libc_read (nbytes=256, buf=0x7ffe80d05690, fd=14) at ../sysdeps/unix/sysv/linux/read.c:26
  2 Thread 0x7fcb7061f700 (LWP 3301) "worker" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  3 Thread 0x7fcb6e5ea700 (LWP 3302) "gmain" 0x00007fcb71d18c2f in __GI___poll (fds=0x55b193fe0d80, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
  4 Thread 0x7fcb6dde9700 (LWP 3303) "gdbus" 0x00007fcb71d18c2f in __GI___poll (fds=0x55b193ff5b20, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
  5 Thread 0x7fcb57fff700 (LWP 3304) "async" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  6 Thread 0x7fcb577fe700 (LWP 3305) "worker" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  7 Thread 0x7fcb56423700 (LWP 3322) "swap writer" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  8 Thread 0x7fcb56ffd700 (LWP 6455) "paint" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  9 Thread 0x7fcb457fc700 (LWP 6902) "pool-gimp-2.10" syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38

Thread 9 (Thread 0x7fcb457fc700 (LWP 6902)):
#0 0x00007fcb71d1e94d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fcb7200bea6 in g_cond_wait_until () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fcb71f903e1 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fcb71f90a06 in g_async_queue_timeout_pop () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fcb71fe9969 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511021090560, -2552484345361049313, 140731059548782, 140731059548783, 140731059548928, 140511021086976, 2523506718432975135, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#7 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fcb56ffd700 (LWP 6455)):
#0 0x00007fcb71d1e94d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fcb7200bd83 in g_cond_wait () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x000055b192254cdd in ()
#3 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511314695936, -2552484345361049313, 140731059557934, 140731059557935, 140731059558080, 140511314692352, 2523543001779820831, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#5 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fcb56423700 (LWP 3322)):
#0 0x00007fcb71d1e94d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fcb7200bd83 in g_cond_wait () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fcb724c9799 in () at /lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511302268672, -2552484345361049313, 140731059554782, 140731059554783, 140731059554928, 140511302265088, 2523543591264082207, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#5 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fcb577fe700 (LWP 3305)):
#0 0x00007fcb71d1e94d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fcb7200bd83 in g_cond_wait () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x000055b192487423 in ()
#3 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511323088640, -2552484345361049313, 140731059560558, 140731059560559, 140731059560704, 140511323085056, 2523546299777833247, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#5 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fcb57fff700 (LWP 3304)):
#0 0x00007fcb71d1e94d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fcb7200bd83 in g_cond_wait () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x000055b19248766c in ()
#3 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511331481344, -2552484345361049313, 140731059560574, 140731059560575, 140731059560720, 140511331477760, 2523545199729334559, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#5 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fcb6dde9700 (LWP 3303)):
#0 0x00007fcb71d18c2f in __GI___poll (fds=0x55b193ff5b20, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1 0x00007fcb71fbfaae in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fcb71fbfe33 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fcb723a18da in () at /lib/x86_64-linux-gnu/libgio-2.0.so.0
#4 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511698392832, -2552484345361049313, 140731059560670, 140731059560671, 140731059560816, 140511698389248, 2523452577685854495, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#6 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fcb6e5ea700 (LWP 3302)):
#0 0x00007fcb71d18c2f in __GI___poll (fds=0x55b193fe0d80, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1 0x00007fcb71fbfaae in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fcb71fbfbe3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fcb71fbfc31 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511706785536, -2552484345361049313, 140731059560254, 140731059560255, 140731059560400, 140511706781952, 2523455875683866911, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#6 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fcb7061f700 (LWP 3301)):
#0 0x00007fcb71d1e94d in syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fcb7200bd83 in g_cond_wait () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fcb7248d993 in () at /lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3 0x00007fcb71fe9181 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fcb71dff669 in start_thread (arg=<optimized out>) at pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140511740557056, -2552484345361049313, 140731059560574, 140731059560575, 140731059560720, 140511740553472, 2523460279635958047, 2523461361759967519}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#5 0x00007fcb71d25323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fcb70d76e00 (LWP 3298)):
#0 0x00007fcb71e0a31c in __libc_read (nbytes=256, buf=0x7ffe80d05690, fd=14) at ../sysdeps/unix/sysv/linux/read.c:26
        resultvar = 18446744073709551104
        sc_cancel_oldtype = 1
#1 0x00007fcb71e0a31c in __libc_read (fd=14, buf=0x7ffe80d05690, nbytes=256) at ../sysdeps/unix/sysv/linux/read.c:24
#2 0x00007fcb728fd7d4 in gimp_stack_trace_print () at /lib/libgimpbase-2.0.so.0
#3 0x000055b1921c24a0 in ()
#4 0x000055b1921c28d8 in ()
#5 0x000055b1921c3037 in ()
#6 0x00007fcb71e0b540 in <signal handler called> () at /lib/x86_64-linux-gnu/libpthread.so.0
#7 0x00007fcb71c493eb in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
        set = {__val = {0, 140511764154496, 94222920024064, 94221258981552, 94221258981653, 94221258981552, 94221258981552, 94221258981655, 94221258981852, 94221258981552, 94221258981852, 0, 0, 0, 0, 0}}
        pid = <optimized out>
        tid = <optimized out>
#8 0x00007fcb71c28899 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x6, sa_sigaction = 0x6}, sa_mask = {__val = {0, 4, 47244640256, 0, 0, 140511765304430, 0, 21474836480, 140731059560192, 140728898420736, 140511765334864, 0, 10149367699326333696, 140511765304430, 140511304994816, 140511765319608}}, sa_flags = 1907828339, sa_restorer = 0x104}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#9 0x00007fcb71c28769 in __assert_fail_base (fmt=0x7fcb71dbcfb8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x7fcb71b72808 "!xcb_xlib_threads_sequence_lost", file=0x7fcb71b72673 "../../src/xcb_io.c", line=260, function=<optimized out>) at assert.c:92
        str = 0x55b1942b7710 "P힘\261U"
        total = 4096
#10 0x00007fcb71c3a006 in __GI___assert_fail (assertion=0x7fcb71b72808 "!xcb_xlib_threads_sequence_lost", file=0x7fcb71b72673 "../../src/xcb_io.c", line=260, function=0x7fcb71b72ac0 "poll_for_event") at assert.c:101
#11 0x00007fcb71afe493 in () at /lib/x86_64-linux-gnu/libX11.so.6
#12 0x00007fcb71afe53d in () at /lib/x86_64-linux-gnu/libX11.so.6
#13 0x00007fcb71afe83a in _XEventsQueued () at /lib/x86_64-linux-gnu/libX11.so.6
#14 0x00007fcb71af0171 in XPending () at /lib/x86_64-linux-gnu/libX11.so.6
#15 0x00007fcb729be3ef in () at /lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#16 0x00007fcb71fbf4e1 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007fcb71fbfa52 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fcb71fbfe33 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x000055b1921c1cb7 in app_run ()
#20 0x000055b1921c15b5 in main ()
[Inferior 1 (process 3298) detached]

```