If the .data field of a QAPI Union is NULL, we don't need to free
any of the union fields..
Make use of the new visit_start_union interface to access this
information and instruct the generated code to not visit these
fields when this occurs.
Cc: qemu-sta...@nongnu.org
Reported-by: Fam Zheng <f...@redhat.com>
Suggested-by: Paolo Bonzini <pbonz...@redhat.com>
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
qapi/qapi-dealloc-visitor.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/qapi/qapi-dealloc-visitor.c b/qapi/qapi-dealloc-visitor.c
index dc53545..eb77078 100644
--- a/qapi/qapi-dealloc-visitor.c
+++ b/qapi/qapi-dealloc-visitor.c
@@ -162,6 +162,11 @@ static void qapi_dealloc_type_enum(Visitor *v, int *obj,
const char *strings[],
{
}
+static bool qapi_dealloc_start_union(Visitor *v, bool data_present, Error
**errp)
+{
+ return data_present;
+}
+
Visitor *qapi_dealloc_get_visitor(QapiDeallocVisitor *v)
{
return &v->visitor;
@@ -191,6 +196,7 @@ QapiDeallocVisitor *qapi_dealloc_visitor_new(void)
v->visitor.type_str = qapi_dealloc_type_str;
v->visitor.type_number = qapi_dealloc_type_number;
v->visitor.type_size = qapi_dealloc_type_size;
+ v->visitor.start_union = qapi_dealloc_start_union;
QTAILQ_INIT(&v->stack);
--
1.9.1
