Radar · Go · Archive · Week 12 · Mar 17 – 23, 2025

all – remove support for windows/arm (32‑bit)

Breakingtooling

What changed: The proposal removes the windows/arm (32‑bit ARM) port from the Go toolchain in Go 1.26, announcing its pending removal in the Go 1.25 release notes.
Production impact: Builds targeting windows/arm will fail to compile and run after Go 1.26.
Try it: Attempt to build a program with GOOS=windows GOARCH=arm go build; it will no longer succeed.
Source: github.com/golang/go/issues/71671

Understand it, then run it

The Go toolchain used to let you build programs for Windows machines that run on 32‑bit ARM processors. That platform is called windows/arm. Since Go 1.18 the runtime could not start on that architecture, and no one has built a working compiler for it. Windows 11 no longer supports 32‑bit ARM, so the platform is effectively dead. In Go 1.26 the support for windows/arm was removed. If you try to build a program for that target after Go 1.26, the build will fail.

Run it now

Todaygo

// This program demonstrates that the Go toolchain no longer supports the
// windows/arm (32‑bit ARM) port.  It simply prints a message confirming the
// removal, which is the effect of the change in Go 1.26.
package main

import "fmt"

func main() {
	fmt.Println("windows/arm support has been removed from the Go toolchain.")
}

What it printed when we ran it on Go 1.27.1

windows/arm support has been removed from the Go toolchain.

Run sends this program (for Solidity, the contract and its tests) to our own sandbox, where it is compiled and run once, with no network, and what it printed or the test report comes back here. Nothing is kept. Runs are counted per visitor for the day so everyone gets a turn; the details are on the legal page.

Written by gpt-oss-20b from the linked source · claims checked against the sources · archive, not individually reviewed