Pass the starting buffer pointer for the backalloc to `_upb_Encode_Field` and `_upb_Encode_Extension`.
PiperOrigin-RevId: 914346686
A
Ada Zhang committed
5fdcfac9eb068d75378d23c71ddfc4052e772364
Parent: 5f77738
Committed by Copybara-Service <copybara-worker@google.com>
on 5/12/2026, 5:20:55 PM