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[Bug 1827681] [NEW] Gimp a bug warning occurred when I was using the "handles transformations" tool (I was using 4 handles)

 

Public bug reported:

```
Éditeur d’image GIMP version 2.10.10
git-describe: 5e662c37d7cc472266989f259c4ae579d66a6617
C compiler:
	Using built-in specs.
	COLLECT_GCC=gcc
	COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
	OFFLOAD_TARGET_NAMES=nvptx-none
	OFFLOAD_TARGET_DEFAULT=1
	Target: x86_64-linux-gnu
	Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.3.0-27ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --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 --with-sysroot=/ --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 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04) 
	
using GEGL version 0.4.14 (compiled against version 0.4.14)
using GLib version 2.56.4 (compiled against version 2.56.3)
using GdkPixbuf version 2.36.11 (compiled against version 2.36.11)
using GTK+ version 2.24.32 (compiled against version 2.24.32)
using Pango version 1.40.14 (compiled against version 1.40.14)
using Fontconfig version 2.12.6 (compiled against version 2.12.6)
using Cairo version 1.15.10 (compiled against version 1.15.10)

```
> GIMP-AVERTISSEMENT: no rectangle found by algorithm, no cropping done

Stack trace:
```

# Stack traces obtained from PID 4832 - Thread 4832 #

[New LWP 4833]
[New LWP 4834]
[New LWP 4835]
[New LWP 4836]
[New LWP 4837]
[New LWP 4838]
[New LWP 4861]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
  Id   Target Id         Frame 
* 1    Thread 0x7fa1b4e07e00 (LWP 4832) "gimp-2.10" 0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
  2    Thread 0x7fa1a6f01700 (LWP 4833) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  3    Thread 0x7fa1a6700700 (LWP 4834) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  4    Thread 0x7fa1a5eff700 (LWP 4835) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  5    Thread 0x7fa19cc4b700 (LWP 4836) "gmain" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
  6    Thread 0x7fa19737e700 (LWP 4837) "gdbus" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
  7    Thread 0x7fa174cb4700 (LWP 4838) "async" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  8    Thread 0x7fa16e47f700 (LWP 4861) "swap writer" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7fa16e47f700 (LWP 4861)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e88ab1 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7fa174cb4700 (LWP 4838)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00005645ad3e00ec in  ()
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7fa19737e700 (LWP 4837)):
#0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa1b19530e6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7fa19cc4b700 (LWP 4836)):
#0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b07df6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa1b07df721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7fa1a5eff700 (LWP 4835)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7fa1a6700700 (LWP 4834)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7fa1a6f01700 (LWP 4833)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7fa1b4e07e00 (LWP 4832)):
#0  0x00007fa1affe3384 in read () at /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fa1b3448de0 in gimp_stack_trace_print () at /usr/lib/libgimpbase-2.0.so.0
#2  0x00005645ad1211ba in gui_message ()
#3  0x00005645ad3dceac in gimp_show_message ()
#4  0x00005645ad116fab in  ()
#5  0x00007fa1b07e61cd in g_logv () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa1b07e633f in g_log () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00005645ad3e2fe2 in  ()
#8  0x00005645ad3e4768 in gimp_transform_resize_boundary ()
#9  0x00005645ad1d185a in gimp_transform_tool_transform ()
#10 0x00005645ad1cde03 in  ()
#11 0x00005645ad1c86d0 in gimp_tool_control ()
#12 0x00005645ad1cf3e9 in  ()
#13 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007fa1b43e36f5 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#26 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007fa1b0acd12e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007fa1b43e2679 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#31 0x00007fa1b448838b in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#32 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#33 0x00007fa1b0accde8 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#34 0x00007fa1b0ad50af in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#35 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#36 0x00007fa1b459e2bc in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#37 0x00007fa1b448662c in gtk_propagate_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#38 0x00007fa1b4486a2b in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#39 0x00007fa1b40fc02c in  () at /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#40 0x00007fa1b07df417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007fa1b07df650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00005645ad116b68 in app_run ()
#44 0x00005645ad11642c in main ()

```
> GIMP-AVERTISSEMENT: no rectangle found by algorithm, no cropping done

Stack trace:
```

# Stack traces obtained from PID 4832 - Thread 4832 #

[New LWP 4833]
[New LWP 4834]
[New LWP 4835]
[New LWP 4836]
[New LWP 4837]
[New LWP 4838]
[New LWP 4861]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
  Id   Target Id         Frame 
* 1    Thread 0x7fa1b4e07e00 (LWP 4832) "gimp-2.10" 0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
  2    Thread 0x7fa1a6f01700 (LWP 4833) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  3    Thread 0x7fa1a6700700 (LWP 4834) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  4    Thread 0x7fa1a5eff700 (LWP 4835) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  5    Thread 0x7fa19cc4b700 (LWP 4836) "gmain" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
  6    Thread 0x7fa19737e700 (LWP 4837) "gdbus" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
  7    Thread 0x7fa174cb4700 (LWP 4838) "async" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
  8    Thread 0x7fa16e47f700 (LWP 4861) "swap writer" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6

Thread 8 (Thread 0x7fa16e47f700 (LWP 4861)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e88ab1 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 7 (Thread 0x7fa174cb4700 (LWP 4838)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00005645ad3e00ec in  ()
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 6 (Thread 0x7fa19737e700 (LWP 4837)):
#0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa1b19530e6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 5 (Thread 0x7fa19cc4b700 (LWP 4836)):
#0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b07df6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa1b07df721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 4 (Thread 0x7fa1a5eff700 (LWP 4835)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 3 (Thread 0x7fa1a6700700 (LWP 4834)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 2 (Thread 0x7fa1a6f01700 (LWP 4833)):
#0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
#3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
#5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

Thread 1 (Thread 0x7fa1b4e07e00 (LWP 4832)):
#0  0x00007fa1affe3384 in read () at /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fa1b3448de0 in gimp_stack_trace_print () at /usr/lib/libgimpbase-2.0.so.0
#2  0x00005645ad1211ba in gui_message ()
#3  0x00005645ad3dceac in gimp_show_message ()
#4  0x00005645ad116fab in  ()
#5  0x00007fa1b07e61cd in g_logv () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fa1b07e633f in g_log () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00005645ad3e2fe2 in  ()
#8  0x00005645ad3e4768 in gimp_transform_resize_boundary ()
#9  0x00005645ad422d21 in gimp_drawable_transform_buffer_affine ()
#10 0x00005645ad417770 in  ()
#11 0x00005645ad470b85 in  ()
#12 0x00005645ad4686e1 in gimp_item_transform ()
#13 0x00005645ad1d095f in  ()
#14 0x00005645ad1cd02a in  ()
#15 0x00005645ad1d1eca in gimp_transform_tool_transform ()
#16 0x00005645ad1cde03 in  ()
#17 0x00005645ad1c86d0 in gimp_tool_control ()
#18 0x00005645ad1cf3e9 in  ()
#19 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007fa1b43e36f5 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#32 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#33 0x00007fa1b0acd12e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#34 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#35 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#36 0x00007fa1b43e2679 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#37 0x00007fa1b448838b in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#38 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#39 0x00007fa1b0accde8 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#40 0x00007fa1b0ad50af in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#41 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#42 0x00007fa1b459e2bc in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#43 0x00007fa1b448662c in gtk_propagate_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#44 0x00007fa1b4486a2b in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#45 0x00007fa1b40fc02c in  () at /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#46 0x00007fa1b07df417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007fa1b07df650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#49 0x00005645ad116b68 in app_run ()
#50 0x00005645ad11642c in main ()

```

** Affects: gimp (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Studio Bugs, which is subscribed to gimp in Ubuntu.
Matching subscriptions: Ubuntu Studio Bugs
https://bugs.launchpad.net/bugs/1827681

Title:
  Gimp a bug warning occurred when I was using the "handles
  transformations" tool (I was using 4 handles)

Status in gimp package in Ubuntu:
  New

Bug description:
  ```
  Éditeur d’image GIMP version 2.10.10
  git-describe: 5e662c37d7cc472266989f259c4ae579d66a6617
  C compiler:
  	Using built-in specs.
  	COLLECT_GCC=gcc
  	COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
  	OFFLOAD_TARGET_NAMES=nvptx-none
  	OFFLOAD_TARGET_DEFAULT=1
  	Target: x86_64-linux-gnu
  	Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.3.0-27ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --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 --with-sysroot=/ --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 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04) 
  	
  using GEGL version 0.4.14 (compiled against version 0.4.14)
  using GLib version 2.56.4 (compiled against version 2.56.3)
  using GdkPixbuf version 2.36.11 (compiled against version 2.36.11)
  using GTK+ version 2.24.32 (compiled against version 2.24.32)
  using Pango version 1.40.14 (compiled against version 1.40.14)
  using Fontconfig version 2.12.6 (compiled against version 2.12.6)
  using Cairo version 1.15.10 (compiled against version 1.15.10)

  ```
  > GIMP-AVERTISSEMENT: no rectangle found by algorithm, no cropping done

  Stack trace:
  ```

  # Stack traces obtained from PID 4832 - Thread 4832 #

  [New LWP 4833]
  [New LWP 4834]
  [New LWP 4835]
  [New LWP 4836]
  [New LWP 4837]
  [New LWP 4838]
  [New LWP 4861]
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
  0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
    Id   Target Id         Frame 
  * 1    Thread 0x7fa1b4e07e00 (LWP 4832) "gimp-2.10" 0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
    2    Thread 0x7fa1a6f01700 (LWP 4833) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    3    Thread 0x7fa1a6700700 (LWP 4834) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    4    Thread 0x7fa1a5eff700 (LWP 4835) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    5    Thread 0x7fa19cc4b700 (LWP 4836) "gmain" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
    6    Thread 0x7fa19737e700 (LWP 4837) "gdbus" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
    7    Thread 0x7fa174cb4700 (LWP 4838) "async" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    8    Thread 0x7fa16e47f700 (LWP 4861) "swap writer" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6

  Thread 8 (Thread 0x7fa16e47f700 (LWP 4861)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e88ab1 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 7 (Thread 0x7fa174cb4700 (LWP 4838)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00005645ad3e00ec in  ()
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 6 (Thread 0x7fa19737e700 (LWP 4837)):
  #0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #3  0x00007fa1b19530e6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
  #4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 5 (Thread 0x7fa19cc4b700 (LWP 4836)):
  #0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b07df6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #3  0x00007fa1b07df721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 4 (Thread 0x7fa1a5eff700 (LWP 4835)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 3 (Thread 0x7fa1a6700700 (LWP 4834)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 2 (Thread 0x7fa1a6f01700 (LWP 4833)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 1 (Thread 0x7fa1b4e07e00 (LWP 4832)):
  #0  0x00007fa1affe3384 in read () at /lib/x86_64-linux-gnu/libpthread.so.0
  #1  0x00007fa1b3448de0 in gimp_stack_trace_print () at /usr/lib/libgimpbase-2.0.so.0
  #2  0x00005645ad1211ba in gui_message ()
  #3  0x00005645ad3dceac in gimp_show_message ()
  #4  0x00005645ad116fab in  ()
  #5  0x00007fa1b07e61cd in g_logv () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #6  0x00007fa1b07e633f in g_log () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #7  0x00005645ad3e2fe2 in  ()
  #8  0x00005645ad3e4768 in gimp_transform_resize_boundary ()
  #9  0x00005645ad1d185a in gimp_transform_tool_transform ()
  #10 0x00005645ad1cde03 in  ()
  #11 0x00005645ad1c86d0 in gimp_tool_control ()
  #12 0x00005645ad1cf3e9 in  ()
  #13 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #14 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #15 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #16 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #17 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #18 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #19 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #20 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #21 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #22 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #23 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #24 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #25 0x00007fa1b43e36f5 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #26 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #27 0x00007fa1b0acd12e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #28 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #29 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #30 0x00007fa1b43e2679 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #31 0x00007fa1b448838b in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #32 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #33 0x00007fa1b0accde8 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #34 0x00007fa1b0ad50af in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #35 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #36 0x00007fa1b459e2bc in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #37 0x00007fa1b448662c in gtk_propagate_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #38 0x00007fa1b4486a2b in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #39 0x00007fa1b40fc02c in  () at /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
  #40 0x00007fa1b07df417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #41 0x00007fa1b07df650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #42 0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #43 0x00005645ad116b68 in app_run ()
  #44 0x00005645ad11642c in main ()

  ```
  > GIMP-AVERTISSEMENT: no rectangle found by algorithm, no cropping done

  Stack trace:
  ```

  # Stack traces obtained from PID 4832 - Thread 4832 #

  [New LWP 4833]
  [New LWP 4834]
  [New LWP 4835]
  [New LWP 4836]
  [New LWP 4837]
  [New LWP 4838]
  [New LWP 4861]
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
  0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
    Id   Target Id         Frame 
  * 1    Thread 0x7fa1b4e07e00 (LWP 4832) "gimp-2.10" 0x00007fa1affe3384 in read () from /lib/x86_64-linux-gnu/libpthread.so.0
    2    Thread 0x7fa1a6f01700 (LWP 4833) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    3    Thread 0x7fa1a6700700 (LWP 4834) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    4    Thread 0x7fa1a5eff700 (LWP 4835) "worker" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    5    Thread 0x7fa19cc4b700 (LWP 4836) "gmain" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
    6    Thread 0x7fa19737e700 (LWP 4837) "gdbus" 0x00007fa1afcf5bf9 in poll () from /lib/x86_64-linux-gnu/libc.so.6
    7    Thread 0x7fa174cb4700 (LWP 4838) "async" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
    8    Thread 0x7fa16e47f700 (LWP 4861) "swap writer" 0x00007fa1afcfc839 in syscall () from /lib/x86_64-linux-gnu/libc.so.6

  Thread 8 (Thread 0x7fa16e47f700 (LWP 4861)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e88ab1 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 7 (Thread 0x7fa174cb4700 (LWP 4838)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00005645ad3e00ec in  ()
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 6 (Thread 0x7fa19737e700 (LWP 4837)):
  #0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #3  0x00007fa1b19530e6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
  #4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 5 (Thread 0x7fa19cc4b700 (LWP 4836)):
  #0  0x00007fa1afcf5bf9 in poll () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b07df5c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b07df6dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #3  0x00007fa1b07df721 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #5  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #6  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 4 (Thread 0x7fa1a5eff700 (LWP 4835)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 3 (Thread 0x7fa1a6700700 (LWP 4834)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 2 (Thread 0x7fa1a6f01700 (LWP 4833)):
  #0  0x00007fa1afcfc839 in syscall () at /lib/x86_64-linux-gnu/libc.so.6
  #1  0x00007fa1b082577f in g_cond_wait () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #2  0x00007fa1b1e4f593 in  () at /usr/lib/x86_64-linux-gnu/libgegl-0.4.so.0
  #3  0x00007fa1b0807195 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #4  0x00007fa1affd96db in start_thread () at /lib/x86_64-linux-gnu/libpthread.so.0
  #5  0x00007fa1afd0288f in clone () at /lib/x86_64-linux-gnu/libc.so.6

  Thread 1 (Thread 0x7fa1b4e07e00 (LWP 4832)):
  #0  0x00007fa1affe3384 in read () at /lib/x86_64-linux-gnu/libpthread.so.0
  #1  0x00007fa1b3448de0 in gimp_stack_trace_print () at /usr/lib/libgimpbase-2.0.so.0
  #2  0x00005645ad1211ba in gui_message ()
  #3  0x00005645ad3dceac in gimp_show_message ()
  #4  0x00005645ad116fab in  ()
  #5  0x00007fa1b07e61cd in g_logv () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #6  0x00007fa1b07e633f in g_log () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #7  0x00005645ad3e2fe2 in  ()
  #8  0x00005645ad3e4768 in gimp_transform_resize_boundary ()
  #9  0x00005645ad422d21 in gimp_drawable_transform_buffer_affine ()
  #10 0x00005645ad417770 in  ()
  #11 0x00005645ad470b85 in  ()
  #12 0x00005645ad4686e1 in gimp_item_transform ()
  #13 0x00005645ad1d095f in  ()
  #14 0x00005645ad1cd02a in  ()
  #15 0x00005645ad1d1eca in gimp_transform_tool_transform ()
  #16 0x00005645ad1cde03 in  ()
  #17 0x00005645ad1c86d0 in gimp_tool_control ()
  #18 0x00005645ad1cf3e9 in  ()
  #19 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #20 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #21 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #22 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #23 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #24 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #25 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #26 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #27 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #28 0x00007fa1b0acd05e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #29 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #30 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #31 0x00007fa1b43e36f5 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #32 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #33 0x00007fa1b0acd12e in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #34 0x00007fa1b0ad5715 in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #35 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #36 0x00007fa1b43e2679 in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #37 0x00007fa1b448838b in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #38 0x00007fa1b0aba10d in g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #39 0x00007fa1b0accde8 in  () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #40 0x00007fa1b0ad50af in g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #41 0x00007fa1b0ad612f in g_signal_emit () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
  #42 0x00007fa1b459e2bc in  () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #43 0x00007fa1b448662c in gtk_propagate_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #44 0x00007fa1b4486a2b in gtk_main_do_event () at /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
  #45 0x00007fa1b40fc02c in  () at /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
  #46 0x00007fa1b07df417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #47 0x00007fa1b07df650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #48 0x00007fa1b07df962 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
  #49 0x00005645ad116b68 in app_run ()
  #50 0x00005645ad11642c in main ()

  ```

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Follow ups