Weak fields were the predecessor to extensions (many many years ago) and were
entirely removed from Google’s production usage by now. (The corresponding field
in descriptor.proto was always documented as “// For Google-internal migration
only. Do not use.”)
Before this change, Go Protobuf still contained support for weak fields behind
the `protolegacy` build tag.
The `protolegacy` build tag was always documented as not being part of the
compatibility agreement:
// WARNING: The compatibility agreement covers nothing provided by this flag.
// As such, functionality may suddenly be removed or changed at our discretion.
const ProtoLegacy = protoLegacy
Fixesgolang/protobuf#1666
Change-Id: Ie1675424bc80d9f44345ccb96a858ef847ee1018
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/641655
Reviewed-by: Chressie Himpel <chressie@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
e677ef98d5