SOTA Go (2026)

Expert-level rules for producing and auditing production Go. Baseline language version: Go 1.25+, the oldest release still in security support (Go fixes the last two majors; 1.24 left support with 1.26's release, 2026-02). Feature notes: loop-var scoping from 1.22, b.Loop/os.Root/tool directives from 1.24, testing/synctest and container-aware GOMAXPROCS from 1.25, errors.AsType and the default-on Green Tea GC from 1.26 — noted where relevant. Every rule states the why; every rules file ends with an audit checklist of grep/vet/lint patterns.

Purpose

Two consumers, one source of truth:

• BUILD mode — generating new Go code: follow the rules as defaults, not suggestions. Deviate only with an explicit comment justifying it.
• AUDIT mode — reviewing existing Go code: hunt violations using the audit checklists, classify by severity, report in the finding format below.