Comment # 1 on bug 1210317 from
Valgrind tells the following:

==450== Invalid read of size 8
==450==    at 0x8307EC2: ??? (in /usr/lib64/libgtk-3.so.0.2405.32)
==450==    by 0x6FA1DA3: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA29F2: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x7009C6B: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA1DA3: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA29F2: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FFD8C1: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA1DA3: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA1DD8: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x5F70AAD: ??? (in /usr/lib64/libglib-2.0.so.0.7600.1)
==450==    by 0x5F74F95: g_main_context_dispatch (in
/usr/lib64/libglib-2.0.so.0.7600.1)
==450==    by 0x5F75357: ??? (in /usr/lib64/libglib-2.0.so.0.7600.1)
==450==  Address 0xf9bcff8 is 24 bytes inside a block of size 176 free'd
==450==    at 0x484617B: free (in
/usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==450==    by 0x5F7BD58: g_free_sized (in /usr/lib64/libglib-2.0.so.0.7600.1)
==450==    by 0x71110C2: g_type_free_instance (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x7FD5760: ??? (in /usr/lib64/libgtk-3.so.0.2405.32)
==450==    by 0x70EE6E8: ??? (in /usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x7108725: g_signal_emit_valist (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x7108A5E: g_signal_emit (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x6FD09E9: g_application_run (in
/usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6568BAF: (below main) (in /usr/lib64/libc.so.6)
==450==  Block was alloc'd at
==450==    at 0x48485EF: calloc (in
/usr/libexec/valgrind/vgpreload_memcheck-amd64-linux.so)
==450==    by 0x5F7BCB0: g_malloc0 (in /usr/lib64/libglib-2.0.so.0.7600.1)
==450==    by 0x7110B33: g_type_create_instance (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x70F453F: ??? (in /usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x70F5BAF: g_object_new_with_properties (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x70F69A0: g_object_new (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x7FD81F6: ??? (in /usr/lib64/libgtk-3.so.0.2405.32)
==450==    by 0x70EE4EF: g_closure_invoke (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x71015F4: ??? (in /usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x71088E5: g_signal_emit_valist (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x7108A5E: g_signal_emit (in
/usr/lib64/libgobject-2.0.so.0.7600.1)
==450==    by 0x6FD0091: g_application_register (in
/usr/lib64/libgio-2.0.so.0.7600.1)
==450== 
==450== Invalid read of size 4
==450==    at 0x8307ED4: ??? (in /usr/lib64/libgtk-3.so.0.2405.32)
==450==    by 0x6FA1DA3: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA29F2: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x7009C6B: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA1DA3: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA29F2: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FFD8C1: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA1DA3: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x6FA1DD8: ??? (in /usr/lib64/libgio-2.0.so.0.7600.1)
==450==    by 0x5F70AAD: ??? (in /usr/lib64/libglib-2.0.so.0.7600.1)
==450==    by 0x5F74F95: g_main_context_dispatch (in
/usr/lib64/libglib-2.0.so.0.7600.1)
==450==    by 0x5F75357: ??? (in /usr/lib64/libglib-2.0.so.0.7600.1)
==450==  Address 0xaaaaaaaaaaaaa9ea is not stack'd, malloc'd or (recently)
free'd


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