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doc: pre-announce removal of gotypesalias and asynctimerchan GODEBUG flags

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This announcement follows the policy outlined in #76163.

For #76472.

Change-Id: I4299e7f474e314810883dc4f50be6afba8c3e3e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/726020
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Robert Griesemer 2025-12-02 11:58:29 -08:00 • committed by Gopher Robot
parent 1a64db3a4b
commit 7cab1b1b26
3 changed files with 11 additions and 2 deletions
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4
doc/godebug.md
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@ -306,7 +306,7 @@ Go 1.23 changed the channels created by package time to be unbuffered
and [`Timer.Reset`](/pkg/time/#Timer.Reset) method results much easier.
The [`asynctimerchan` setting](/pkg/time/#NewTimer) disables this change.
There are no runtime metrics for this change,
This setting may be removed in a future release, Go 1.27 at the earliest.
This setting will be removed in Go 1.27.
Go 1.23 changed the mode bits reported by [`os.Lstat`](/pkg/os#Lstat) and [`os.Stat`](/pkg/os#Stat)
for reparse points, which can be controlled with the `winsymlink` setting.
@ -385,7 +385,7 @@ Whether the type checker produces `Alias` types or not is controlled by the
[`gotypesalias` setting](/pkg/go/types#Alias).
For Go 1.22 it defaults to `gotypesalias=0`.
For Go 1.23, `gotypesalias=1` will become the default.
This setting will be removed in a future release, Go 1.27 at the earliest.
This setting will be removed in Go 1.27.
Go 1.22 changed the default minimum TLS version supported by both servers
and clients to TLS 1.2. The default can be reverted to TLS 1.0 using the

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doc/next/6-stdlib/99-minor/go/types/76472.md Normal file
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@ -0,0 +1,4 @@
The `asynctimerchan` GODEBUG setting introduced in [Go 1.23](/doc/godebug#go-123)
will be removed in the next major Go release.
Starting in Go 1.27, the [time](/pkg/time) package will always use unbuffered
(synchronous) channels for timers regardless of GODEBUG setting or go.mod language version.

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doc/next/6-stdlib/99-minor/time/76472.md Normal file
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@ -0,0 +1,5 @@
The `gotypesalias` GODEBUG setting introduced in [Go 1.22](/doc/godebug#go-122)
will be removed in the next major Go release.
Starting in Go 1.27, the [go/types](/pkg/go/types) package will always produce an
[Alias type](/pkg/go/types#Alias) for the representation of [type aliases](/ref/spec#Type_declarations)
regardless of GODEBUG setting or go.mod language version.