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qom/object: add some interface asserts 

An interface can't have any instance size or callback, or itself
implement other interfaces (this is unsupported).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180912125303.29158-1-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2018-09-12 16:53:03 +04:00 committed by Paolo Bonzini
parent dcf6760a64
commit 422ca1432f
1 changed files with 8 additions and 1 deletions
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9
qom/object.c
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@ -286,7 +286,14 @@ static void type_initialize(TypeImpl *ti)
if (ti->instance_size == 0) {
ti->abstract = true;
}
if (type_is_ancestor(ti, type_interface)) {
assert(ti->instance_size == 0);
assert(ti->abstract);
assert(!ti->instance_init);
assert(!ti->instance_post_init);
assert(!ti->instance_finalize);
assert(!ti->num_interfaces);
}
ti->class = g_malloc0(ti->class_size);
parent = type_get_parent(ti);