From 713d921aed52a802c62f02dadd59da5a9f9466b1 Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Thu, 16 Mar 2023 08:13:24 +0100 Subject: [PATCH] qapi: Fix code generated for optional conditional struct member MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: 44ea9d9be33c (qapi: Start to elide redundant has_FOO in generated C) Signed-off-by: Marc-André Lureau Signed-off-by: Markus Armbruster Message-Id: <20230316071325.492471-14-armbru@redhat.com> Reviewed-by: Eric Blake --- scripts/qapi/visit.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/scripts/qapi/visit.py b/scripts/qapi/visit.py index 26a584ee4c..c56ea4d724 100644 --- a/scripts/qapi/visit.py +++ b/scripts/qapi/visit.py @@ -74,11 +74,13 @@ def gen_visit_object_members(name: str, sep = '' for memb in members: if memb.optional and not memb.need_has(): + ret += memb.ifcond.gen_if() ret += mcgen(''' bool has_%(c_name)s = !!obj->%(c_name)s; ''', c_name=c_name(memb.name)) sep = '\n' + ret += memb.ifcond.gen_endif() ret += sep if base: