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authorEric Blake <eblake@redhat.com>2016-03-17 16:48:27 -0600
committerMarkus Armbruster <armbru@redhat.com>2016-03-18 10:29:25 +0100
commit972a110162677fe5155f68a718ec6e999cd059a7 (patch)
treeb261494c40c0493beb52aeb01e0794ac8ec2e5a5 /scripts
parent29f6bd15eb8a55ed37b2a443f7275b3d134eb2b2 (diff)
qapi: Fix command with named empty argument type
The generator special-cased { 'command':'foo', 'data': {} } to avoid emitting a visitor variable, but failed to see that { 'struct':'NamedEmptyType, 'data': {} } { 'command':'foo', 'data':'NamedEmptyType' } needs the same treatment. There, the generator happily generates a visitor to get no arguments, and a visitor to destroy no arguments; and the compiler isn't happy with that, as demonstrated by the updated qapi-schema-test.json: tests/test-qmp-marshal.c: In function ‘qmp_marshal_user_def_cmd0’: tests/test-qmp-marshal.c:264:14: error: variable ‘v’ set but not used [-Werror=unused-but-set-variable] Visitor *v; ^ No change to generated code except for the testsuite addition. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <1458254921-17042-3-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/qapi-commands.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
index edcbd10128..3784f33fcc 100644
--- a/scripts/qapi-commands.py
+++ b/scripts/qapi-commands.py
@@ -66,7 +66,7 @@ def gen_marshal_vars(arg_type, ret_type):
''',
c_type=ret_type.c_type())
- if arg_type:
+ if arg_type and arg_type.members:
ret += mcgen('''
QmpInputVisitor *qiv = qmp_input_visitor_new_strict(QOBJECT(args));
QapiDeallocVisitor *qdv;
@@ -98,7 +98,7 @@ def gen_marshal_vars(arg_type, ret_type):
def gen_marshal_input_visit(arg_type, dealloc=False):
ret = ''
- if not arg_type:
+ if not arg_type or not arg_type.members:
return ret
if dealloc: