Document `upb_Message_SetMessage`.

PiperOrigin-RevId: 613747349
9 months ago · 3c0f3ca6be
parent 9db04d2e01
commit 3c0f3ca6be
1 changed files with 3 additions and 0 deletions
--- a/upb/message/accessors.h
+++ b/upb/message/accessors.h
@ -351,6 +351,9 @@ UPB_API_INLINE void _upb_Message_SetTaggedMessagePtr(
  _upb_Message_SetNonExtensionField(msg, field, &sub_message);
 }

+// Sets the value of a message-typed field. The `mini_table` and `field`
+// parameters belong to `msg`, not `sub_message`. The mini_tables of `msg` and
+// `sub_message` must have been linked for this to work correctly.
 UPB_API_INLINE void upb_Message_SetMessage(upb_Message* msg,
                                           const upb_MiniTable* mini_table,
                                           const upb_MiniTableField* field,