qapi: Fix code generated for optional conditional struct member
The generated member visit neglects to emit #if around a conditional
struct member's has_ variable. For instance,
tests/qapi-schema/qapi-schema-test.json generates
#if defined(TEST_IF_STRUCT)
bool visit_type_TestIfStruct_members(Visitor *v, TestIfStruct *obj, Error **errp)
{
---> bool has_baz = !!obj->baz;
if (!visit_type_int(v, "foo", &obj->foo, errp)) {
return false;
}
#if defined(TEST_IF_STRUCT_MEMBER)
if (!visit_type_int(v, "bar", &obj->bar, errp)) {
return false;
}
#endif /* defined(TEST_IF_STRUCT_MEMBER) */
#if defined(TEST_IF_STRUCT_MEMBER)
if (visit_optional(v, "baz", &has_baz)) {
if (!visit_type_str(v, "baz", &obj->baz, errp)) {
return false;
}
}
#endif /* defined(TEST_IF_STRUCT_MEMBER) */
return true;
}
[...]
#endif /* defined(TEST_IF_STRUCT) */
Won't compile when TEST_IF_STRUCT is defined and TEST_IF_STRUCT_MEMBER
isn't.
Fix that the obvious way:
#if defined(TEST_IF_STRUCT_MEMBER)
bool has_baz = !!obj->baz;
#endif /* defined(TEST_IF_STRUCT_MEMBER) */
Fixes: 44ea9d9be3 (qapi: Start to elide redundant has_FOO in generated C)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230316071325.492471-14-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
713d921aed