```
GNU Image Manipulation Program version 2.10.12
git-describe: GIMP_2_10_10-209-g3d8535b55f
C compiler:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.3.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp --enable-cet=auto
Thread model: posix
gcc version 8.3.0 (GCC)

using GEGL version 0.4.16 (compiled against version 0.4.16)
using GLib version 2.60.6 (compiled against version 2.60.3)
using GdkPixbuf version 2.38.1 (compiled against version 2.38.1)
using GTK+ version 2.24.32 (compiled against version 2.24.32)
using Pango version 1.44.3 (compiled against version 1.43.0)
using Fontconfig version 2.13.1 (compiled against version 2.13.1)
using Cairo version 1.17.3 (compiled against version 1.16.0)

```
> fatal error: Segmentation fault

Stack trace:
```
/usr/lib/libgimpbase-2.0.so.0(gimp_stack_trace_print+0x3b7)[0x7f4b83fc3287]
gimp-2.10(+0xc93ff)[0x56160df9c3ff]
gimp-2.10(gimp_fatal_error+0x17)[0x56160df9c857]
gimp-2.10(+0xc9fc8)[0x56160df9cfc8]
/usr/lib/libpthread.so.0(+0x13cff)[0x7f4b827ffcff]
/usr/lib/libc.so.6(+0x849f4)[0x7f4b826ad9f4]
/usr/lib/libfontconfig.so.1(+0x20cd3)[0x7f4b830e6cd3]
/usr/lib/libfontconfig.so.1(FcPatternDestroy+0x4d)[0x7f4b830e720d]
/usr/lib/libglib-2.0.so.0(+0x7c18e)[0x7f4b829d118e]
/usr/lib/libglib-2.0.so.0(g_hash_table_remove_all+0x57)[0x7f4b829d23e7]
/usr/lib/libglib-2.0.so.0(g_hash_table_destroy+0xe)[0x7f4b829d242e]
/usr/lib/libpangoft2-1.0.so.0(+0x806d)[0x7f4b8316306d]
/usr/lib/libpangoft2-1.0.so.0(pango_fc_font_map_shutdown+0x60)[0x7f4b83165b00]
/usr/lib/libpangoft2-1.0.so.0(+0xbace)[0x7f4b83166ace]
/usr/lib/libgobject-2.0.so.0(g_object_unref+0x1a0)[0x7f4b82aaa350]
/usr/lib/libpango-1.0.so.0(+0x25f0c)[0x7f4b83132f0c]
/usr/lib/libgobject-2.0.so.0(g_object_unref+0x1a0)[0x7f4b82aaa350]
/usr/lib/libpango-1.0.so.0(+0x1abd4)[0x7f4b83127bd4]
/usr/lib/libgobject-2.0.so.0(g_object_unref+0x1a0)[0x7f4b82aaa350]
gimp-2.10(+0x497cc2)[0x56160e36acc2]
/usr/lib/libgobject-2.0.so.0(g_object_unref+0x1a0)[0x7f4b82aaa350]
gimp-2.10(+0x178a27)[0x56160e04ba27]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x1a9)[0x7f4b82aa8ca9]
/usr/lib/libgobject-2.0.so.0(+0x1f705)[0x7f4b82a96705]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0xf89)[0x7f4b82a9a899]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x8f)[0x7f4b82a9b6ff]
gimp-2.10(gimp_text_buffer_set_size+0xcd)[0x56160e19184d]
gimp-2.10(+0x2c6ee9)[0x56160e199ee9]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x1a9)[0x7f4b82aa8ca9]
/usr/lib/libgobject-2.0.so.0(+0x1f705)[0x7f4b82a96705]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0xf89)[0x7f4b82a9a899]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x8f)[0x7f4b82a9b6ff]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x1a9)[0x7f4b82aa8ca9]
/usr/lib/libgobject-2.0.so.0(+0x1f705)[0x7f4b82a96705]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0xf89)[0x7f4b82a9a899]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x8f)[0x7f4b82a9b6ff]
/usr/lib/libgtk-x11-2.0.so.0(gtk_adjustment_value_changed+0x3d)[0x7f4b834a657d]
/usr/lib/libgtk-x11-2.0.so.0(gtk_spin_button_set_value+0xe8)[0x7f4b835d4b48]
/usr/lib/libgtk-x11-2.0.so.0(gtk_spin_button_update+0x1e7)[0x7f4b835d54d7]
/usr/lib/libgtk-x11-2.0.so.0(+0x1a1979)[0x7f4b835d5979]
/usr/lib/libgtk-x11-2.0.so.0(+0x12e7cb)[0x7f4b835627cb]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x1a9)[0x7f4b82aa8ca9]
/usr/lib/libgobject-2.0.so.0(+0x1ef77)[0x7f4b82a95f77]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x51b)[0x7f4b82a99e2b]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x8f)[0x7f4b82a9b6ff]
/usr/lib/libgtk-x11-2.0.so.0(+0x249234)[0x7f4b8367d234]
/usr/lib/libgtk-x11-2.0.so.0(gtk_propagate_event+0xad)[0x7f4b83560a0d]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x322)[0x7f4b83560e42]
/usr/lib/libgdk-x11-2.0.so.0(+0x59d5d)[0x7f4b831d9d5d]
/usr/lib/libglib-2.0.so.0(g_main_context_dispatch+0x293)[0x7f4b829bdcf3]
/usr/lib/libglib-2.0.so.0(+0x6ab10)[0x7f4b829bfb10]
/usr/lib/libglib-2.0.so.0(g_main_loop_run+0xc2)[0x7f4b829c0a62]
gimp-2.10(app_run+0x36e)[0x56160df9bbde]
gimp-2.10(main+0x3c1)[0x56160df9b491]
/usr/lib/libc.so.6(__libc_start_main+0xf2)[0x7f4b8264fee2]
gimp-2.10(_start+0x2d)[0x56160df9b62d]

```
Description:


Additional info:
* package version(s)
* config and/or log files etc.
* link to upstream bug report, if any

Steps to reproduce:

Crashes when editing text using Thai font Sawasdee and other fonts.