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-rw-r--r--pb_decode.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/pb_decode.c b/pb_decode.c
index e2e89a0d..fba8f64c 100644
--- a/pb_decode.c
+++ b/pb_decode.c
@@ -312,6 +312,9 @@ static bool pb_field_next(pb_field_iterator_t *iter)
if (PB_HTYPE(iter->current->type) == PB_HTYPE_REQUIRED)
iter->required_field_index++;
+ if (iter->current->tag == 0)
+ return false; /* Only happens with empty message types */
+
iter->current++;
iter->field_index++;
if (iter->current->tag == 0)