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-rw-r--r--pb_common.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/pb_common.c b/pb_common.c
index a9cade63..98964850 100644
--- a/pb_common.c
+++ b/pb_common.c
@@ -54,6 +54,13 @@ bool pb_field_iter_next(pb_field_iter_t *iter)
* The data_size only applies to the dynamically allocated area. */
prev_size = sizeof(void*);
}
+ else if (PB_HTYPE(prev_field->type) == PB_HTYPE_ONEOF &&
+ PB_HTYPE(iter->pos->type) == PB_HTYPE_ONEOF)
+ {
+ /* Don't advance pointers inside unions */
+ prev_size = 0;
+ iter->pData = (char*)iter->pData - prev_field->data_offset;
+ }
if (PB_HTYPE(prev_field->type) == PB_HTYPE_REQUIRED)
{