Created attachment 27891 [details] [review]
Correct the GType of XklEngineFeatures

GDM crashes with a libxklavier assertion at startup.  GDM is at version 2.27.4, and libxklavier is at version 4.0.  The stack trace is:

GLib-GObject-CRITICAL: g_param_spec_flags: assertion `G_TYPE_IS_FLAGS (flags_type)' failed aborting...
Jul 21 17:51:25 jclarke-pc gdm[7671]: [New Thread 29001140 (LWP 100162)]
Jul 21 17:51:26 jclarke-pc gdm[7671]: [Switching to Thread 29001140 (LWP 100162)]
Jul 21 17:51:26 jclarke-pc gdm[7671]: 0x28ef15f9 in wait4 () at wait4.S:3
Jul 21 17:51:26 jclarke-pc gdm[7671]: 3 RSYSCALL(wait4)
Jul 21 17:51:26 jclarke-pc gdm[7671]: #0  0x28ef15f9 in wait4 () at wait4.S:3
Jul 21 17:51:26 jclarke-pc gdm[7671]: #1  0x28ecb363 in __waitpid (pid=7671, istat=0xbfbfdb18, options=0)
Jul 21 17:51:26 jclarke-pc gdm[7671]:     at /usr/src/lib/libc/gen/waitpid.c:46
Jul 21 17:51:26 jclarke-pc gdm[7671]: #2  0x28e856f2 in ___waitpid (wpid=7671, status=0xbfbfdb18, options=0)
Jul 21 17:51:26 jclarke-pc gdm[7671]:     at /usr/src/lib/libthr/thread/thr_syscalls.c:592
Jul 21 17:51:26 jclarke-pc gdm[7671]: #3  0x0806fda7 in gdm_signal_handler_backtrace () at gdm-signal-handler.c:196
Jul 21 17:51:26 jclarke-pc gdm[7671]: ) at gdm-signal-handler.c:251
Jul 21 17:51:26 jclarke-pc gdm[7671]: #5  <signal handler called>
Jul 21 17:51:26 jclarke-pc gdm[7671]: #6  IA__g_logv (log_domain=0x28b428c7 "GLib-GObject", 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     log_level=G_LOG_LEVEL_CRITICAL, 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     format=0x28bc3414 "%s: assertion `%s' failed", 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     args1=0xbfbfe31c "=S�(�N�(H��(@)\016)�(�(H��(") at gmessages.c:512
Jul 21 17:51:26 jclarke-pc gdm[7671]: #7  0x28b8d399 in IA__g_log (log_domain=0x28b428c7 "GLib-GObject", 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     log_level=G_LOG_LEVEL_CRITICAL, 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     format=0x28bc3414 "%s: assertion `%s' failed") at gmessages.c:526
Jul 21 17:51:26 jclarke-pc gdm[7671]: #8  0x28b8d5db in IA__g_return_if_fail_warning (
Jul 21 17:51:26 jclarke-pc gdm[7671]:     log_domain=0x28b428c7 "GLib-GObject", 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     pretty_function=0x28b4533d "g_param_spec_flags", 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     expression=0x28b44ef5 "G_TYPE_IS_FLAGS (flags_type)") at gmessages.c:541
Jul 21 17:51:26 jclarke-pc gdm[7671]: #9  0x28b24ba1 in IA__g_param_spec_flags (name=0x28991728 "features", 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     nick=0x28991488 "Features", blurb=0x28991720 "Backend features", 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     flags_type=688793920, default_value=0, flags=G_PARAM_READABLE)
Jul 21 17:51:26 jclarke-pc gdm[7671]:     at gparamspecs.c:2001
Jul 21 17:51:26 jclarke-pc gdm[7671]: #10 0x28985b79 in xkl_engine_class_intern_init (klass=0x290f0880)
Jul 21 17:51:26 jclarke-pc gdm[7671]:     at xklavier.c:817
Jul 21 17:51:26 jclarke-pc gdm[7671]: #11 0x28b3b075 in IA__g_type_class_ref (type=688793728) at gtype.c:1989
Jul 21 17:51:26 jclarke-pc gdm[7671]: #12 0x28b1e8f1 in IA__g_object_new_valist (object_type=688793728, 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     first_property_name=0x289916e6 "display", var_args=0xbfbfe588 "")
Jul 21 17:51:26 jclarke-pc gdm[7671]:     at gobject.c:1280
Jul 21 17:51:26 jclarke-pc gdm[7671]: #13 0x28b1ecb0 in IA__g_object_new (object_type=688793728, 
Jul 21 17:51:26 jclarke-pc gdm[7671]:     first_property_name=0x289916e6 "display") at gobject.c:1060
Jul 21 17:51:26 jclarke-pc gdm[7671]: #14 0x28986d24 in xkl_engine_get_instance (display=0x29051200)
Jul 21 17:51:26 jclarke-pc gdm[7671]:     at xklavier.c:213
Jul 21 17:51:26 jclarke-pc gdm[7671]: #15 0x0806a823 in init_xkl () at gdm-layouts.c:52
Jul 21 17:51:26 jclarke-pc gdm[7671]: #16 0x0806a8c1 in gdm_layout_activate (layout=0x0) at gdm-layouts.c:249

It seems to me that XklEngineFeatures should be a G_FLAGS_CLASS instead of a G_ENUM_CLASS.  Attached is a patch which corrects this, and fixes the crash in gdm.