422f4705ca
The commands to build the bootstrap toolchains and go commands are run from modules created by two bootstrap go.mod files: one is used when building toolchain1 and go_bootstrap, and the other is used for toolchain2 and toolchain3, and the final build. Currently the first has a go directive specifying go 1.20, and the second one does not have a go directive at all. This affects the default GODEBUG setting when building the final toolchain: the default GODEBUG value is based on the go version of the go.mod file, and when the go.mod file does not have a version it defaults to go1.16. We should set the go directive on the bootstrap used for the second half of the builds to use the current go verison from the std's go.mod file (which is the same as the version on cmd's go.mod file). The go.mod file used for the initial bootstrap should have a go directive with the minimum version of the toolchain required for bootstrapping. That version is the current version - 2 rounded down to an even number. For #64751 Fixes #68797 Change-Id: Ibdddf4bc36dc963291979d603c4f3fc55264f65b Reviewed-on: https://go-review.googlesource.com/c/go/+/604799 Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> |
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