tree 4739f613490bc60e74e3419c0ef55dee72df534f
parent ef7418827c4e1f83e93779b9f244ad84d96a4d94
author Michael Stapelberg <stapelberg@golang.org> 1715948359 +0200
committer Michael Stapelberg <stapelberg@golang.org> 1715955216 +0000

internal/impl: fix size cache semantics with lazy decoding

When a message (within an extension) is lazily decoded, its size cache is
initialized to 0 (the zero value for an int32). This doesn’t mean the size cache
reads 0, but rather that it was not initialized.

This fixes TestExtensionGetRace being flaky since CL 580015.

related to golang/protobuf#1609

Change-Id: Ia305badadd300679975f230005c3e33c94050e4a
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/586396
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Lasse Folger <lassefolger@google.com>