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qapi: Disallow qmp_marshal_FOO(NULL, ...)

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For QMP commands without arguments, gen_marshal() laboriously
generates a qmp_marshal_FOO() that copes with null @args.  Turns
there's just one caller that passes null instead of an empty QDict.
Adjust that caller, and simplify gen_marshal().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200424084338.26803-15-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Markus Armbruster 2020-04-24 10:43:37 +02:00
parent ea097dff0f
commit 2061487bdb
3 changed files with 7 additions and 26 deletions
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2
docs/devel/qapi-code-gen.txt
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@ -1579,8 +1579,8 @@ Example:
void qmp_marshal_my_command(QDict *args, QObject **ret, Error **errp)
{
Error *err = NULL;
UserDefOne *retval;
Visitor *v;
UserDefOne *retval;
q_obj_my_command_arg arg = {0};
v = qobject_input_visitor_new(QOBJECT(args));