X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=pb.h;h=f68d1d65ee8d3e1b360206750e1f835f6730c1be;hb=31e09c6630c47d0aa1c1ec3909a936ba5674254f;hp=2cf5c4dce27637686dddf2f1ecc2bf86c2d90557;hpb=af601e4e971075e1f53a26f6c1ab63320823d8c2;p=apps%2Fagl-service-can-low-level.git

diff --git a/pb.h b/pb.h
index 2cf5c4dc..f68d1d65 100644
--- a/pb.h
+++ b/pb.h
@@ -393,6 +393,8 @@ struct pb_extension_s {
 #define PB_DATAOFFSET_FIRST(st, m1, m2) (offsetof(st, m1))
 /* data_offset for subsequent fields */
 #define PB_DATAOFFSET_OTHER(st, m1, m2) (offsetof(st, m1) - offsetof(st, m2) - pb_membersize(st, m2))
+/* data offset for subsequent fields inside an union (oneof) */
+#define PB_DATAOFFSET_UNION(st, m1, m2) (PB_SIZE_MAX)
 /* Choose first/other based on m1 == m2 (deprecated, remains for backwards compatibility) */
 #define PB_DATAOFFSET_CHOOSE(st, m1, m2) (int)(offsetof(st, m1) == offsetof(st, m2) \
                                   ? PB_DATAOFFSET_FIRST(st, m1, m2) \