Description of problem:
PC frozewhilst was using Darktable..

 powerdevil, kactivitymanagerd solaar, gdb and Darktable all appearto have crashed at the same time according to ABRT.

After a hard restart I had some funky graphics (i.e. flashing menues and dialogs) untill after perfoming a second restart.

Version-Release number of selected component:
gdb-headless-7.12-36.fc25

Additional info:
reporter:       libreport-2.8.0
backtrace_rating: 4
cmdline:        gdb /usr/bin/darktable 31415 -batch -ex 'set logging on /tmp/darktable_bt_IIULUY.txt' -x /usr/share/darktable/gdb_commands
crash_function: dump_core
executable:     /usr/libexec/gdb
global_pid:     31500
kernel:         4.9.2-200.fc25.x86_64
pkg_fingerprint: 4089 D8F2 FDB1 9C98
pkg_vendor:     Fedora Project
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #2 dump_core at ../../gdb/utils.c:568
 #3 gdb_demangle_signal_handler at ../../gdb/cp-support.c:1521
 #5 d_print_comp at ../../libiberty/cp-demangle.c:5594
 #6 d_print_comp_inner at ../../libiberty/cp-demangle.c:5156
 #7 d_print_comp at ../../libiberty/cp-demangle.c:5594
 #8 d_print_comp_inner at ../../libiberty/cp-demangle.c:4706
 #9 d_print_comp at ../../libiberty/cp-demangle.c:5594
 #10 d_print_comp_inner at ../../libiberty/cp-demangle.c:5156
 #11 d_print_comp at ../../libiberty/cp-demangle.c:5594
 #12 d_print_comp_inner at ../../libiberty/cp-demangle.c:5168