Comment # 18 on bug 1128546 from Guillaume GARDET

gdb trace once attached to appstreamcli proc:

#0  0x0000ffff7e4a6540 in g_variant_new_parsed_va ()
   from /usr/lib64/libglib-2.0.so.0
#1  0x0000ffff7e4a66a8 in g_variant_builder_add_parsed ()
   from /usr/lib64/libglib-2.0.so.0
#2  0x0000ffff7e5864fc in ?? () from /usr/lib64/libappstream.so.4
#3  0x0000ffff7e5766d8 in ?? () from /usr/lib64/libappstream.so.4
#4  0x0000ffff7e57b7c4 in as_cache_file_save ()
   from /usr/lib64/libappstream.so.4
#5  0x0000ffff7e57bb58 in as_pool_save_cache_file ()
   from /usr/lib64/libappstream.so.4
#6  0x0000ffff7e57bd3c in as_pool_refresh_cache ()
   from /usr/lib64/libappstream.so.4
#7  0x0000aaaab3e26398 in ?? ()
#8  0x0000aaaab3e231c4 in ?? ()
#9  0x0000ffff7e064ae4 in __libc_start_main () from /lib64/libc.so.6
#10 0x0000aaaab3e226c4 in ?? ()
Backtrace stopped: not enough registers or memory available to unwind further
Detaching from program: /usr/bin/appstreamcli, process 9879
[Inferior 1 (process 9879) detached]