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go/doc/next/5-toolchain.md
Keith Randall 6e4abe8cef doc: mention stack allocation of slices 
Very similar to last release's note.

Change-Id: Ie7afe21d98cee1c9718e53b20e8af8ee18504bb9
Reviewed-on: https://go-review.googlesource.com/c/go/+/725921
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
2025-12-02 14:43:05 -08:00

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Compiler

The compiler can now allocate the backing store for slices on the stack in more situations, which improves performance. If this change is causing trouble, the bisect tool can be used to find the allocation causing trouble using the -compile=variablemake flag. All such new stack allocations can also be turned off using -gcflags=all=-d=variablemakehash=n.

Assembler

Linker

On 64-bit ARM-based Windows (the windows/arm64 port), the linker now supports internal linking mode of cgo programs, which can be requested with the -ldflags=-linkmode=internal flag.

Bootstrap

As mentioned in the Go 1.24 release notes, Go 1.26 now requires Go 1.24.6 or later for bootstrap. We expect that Go 1.28 will require a minor release of Go 1.26 or later for bootstrap.