vl.c: -object: don't ignore duplicate 'id'

object_property_add_child() may fail if 'id' matches
an already existing object. Which means an incorrect
command line.
So instead of silently ignoring error, report it and
terminate QEMU.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/vl.c b/vl.c
index 7f4fe0d5df..cf3de56b7d 100644
--- a/vl.c
+++ b/vl.c
@@ -2800,6 +2800,7 @@ static int object_create(QemuOpts *opts, void *opaque)
 {
     const char *type = qemu_opt_get(opts, "qom-type");
     const char *id = qemu_opts_id(opts);
+    Error *local_err = NULL;
     Object *obj;
 
     g_assert(type != NULL);
@@ -2816,8 +2817,14 @@ static int object_create(QemuOpts *opts, void *opaque)
     }
 
     object_property_add_child(container_get(object_get_root(), "/objects"),
-                              id, obj, NULL);
+                              id, obj, &local_err);
+
     object_unref(obj);
+    if (local_err) {
+        qerror_report_err(local_err);
+        error_free(local_err);
+        return -1;
+    }
     return 0;
 }