Radar · Go · Archive · Week 45 · Nov 3 – 9, 2025

go1.25.4 released

Nice to knowtooling

What changed: The release includes fixes to the compiler, the runtime, and the crypto/subtle, encoding/pem, net/url, and os packages.
Production impact: The source does not say.
Try it: Upgrade to 1.25.4 and run your CI pipeline to ensure no regressions.
Source: go.dev/doc/devel/release#go1.25.4

Understand it, then run it

Run it now

Todaygo

// This program demonstrates that the standard library still works after the
// 1.25.4 fixes. It parses a URL and prints its components.
package main

import (
	"fmt"
	"net/url"
)

func main() {
	u, err := url.Parse("https://example.com/path?query=1")
	if err != nil {
		panic(err)
	}
	fmt.Printf("Scheme: %s\nHost: %s\nPath: %s\nQuery: %s\n",
		u.Scheme, u.Host, u.Path, u.RawQuery)
}

What it printed when we ran it on Go 1.27.1

Scheme: https
Host: example.com
Path: /path
Query: query=1

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