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-rw-r--r--qapi/qapi-visit-core.c7
-rw-r--r--qapi/qapi-visit-core.h3
2 files changed, 10 insertions, 0 deletions
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index d41595eaa1..7a82b63766 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -234,6 +234,13 @@ void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp)
     }
 }
 
+void visit_type_size(Visitor *v, uint64_t *obj, const char *name, Error **errp)
+{
+    if (!error_is_set(errp)) {
+        (v->type_size ? v->type_size : v->type_uint64)(v, obj, name, errp);
+    }
+}
+
 void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp)
 {
     if (!error_is_set(errp)) {
diff --git a/qapi/qapi-visit-core.h b/qapi/qapi-visit-core.h
index a19d70c104..60acedac77 100644
--- a/qapi/qapi-visit-core.h
+++ b/qapi/qapi-visit-core.h
@@ -60,6 +60,8 @@ struct Visitor
     void (*type_int16)(Visitor *v, int16_t *obj, const char *name, Error **errp);
     void (*type_int32)(Visitor *v, int32_t *obj, const char *name, Error **errp);
     void (*type_int64)(Visitor *v, int64_t *obj, const char *name, Error **errp);
+    /* visit_type_size() falls back to (*type_uint64)() if type_size is unset */
+    void (*type_size)(Visitor *v, uint64_t *obj, const char *name, Error **errp);
 };
 
 void visit_start_handle(Visitor *v, void **obj, const char *kind,
@@ -85,6 +87,7 @@ void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp);
 void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp);
 void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp);
 void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp);
+void visit_type_size(Visitor *v, uint64_t *obj, const char *name, Error **errp);
 void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp);
 void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp);
 void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp);