golang.org/x/sys v0.47.0: windows.CREATE_BREAKAWAY_FROM_JOB

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB in pkg:golang/golang.org/x/sys@v0.47.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/golang.org/x/sys@v0.47.0
Demonstrate these symbols/APIs:
  - golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:984c3828c715a4007750bf8574852bea450438468993284860cb145baaa150be","contract":["windows.CREATE_BREAKAWAY_FROM_JOB represents process creation flag 0x01000000","windows.CREATE_BREAKAWAY_FROM_JOB combines with other creation flags such as CREATE_SUSPENDED and CREATE_NEW_CONSOLE","windows.SysProcAttr CreationFlags accepts CREATE_BREAKAWAY_FROM_JOB","windows.CREATE_BREAKAWAY_FROM_JOB is distinct from related job object limit flags"],"goal":"verify golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB in pkg:golang/golang.org/x/sys@v0.47.0","kind":"HOW","packages":["pkg:golang/golang.org/x/sys@v0.47.0"],"schemaVersion":1,"symbols":["golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB"]},"contractCommand":["env","GOOS=windows","go","build","-o","/dev/null","./test"],"environment":{"arch":"x64","ecosystem":"golang","os":"windows","osVersionBucket":"11","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/golang.org/x/sys@v0.47.0"],"schemaVersion":1,"symbols":["golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB"],"verifierAdapter":"golang@1"}

module sample

go 1.25.0

require golang.org/x/sys v0.47.0

golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=

{
  "schemaVersion": 1,
  "goal": "verify golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB in pkg:golang/golang.org/x/sys@v0.47.0",
  "kind": "HOW",
  "packages": [
    "pkg:golang/golang.org/x/sys@v0.47.0"
  ],
  "symbols": [
    "golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB"
  ]
}

package main

import (
	"fmt"
	"os"

	"golang.org/x/sys/windows"
)

func main() {
	// 1. Verify CREATE_BREAKAWAY_FROM_JOB equals 0x01000000 (16777216)
	const expectedFlag uint32 = 0x01000000
	if windows.CREATE_BREAKAWAY_FROM_JOB != expectedFlag {
		fmt.Fprintf(os.Stderr, "expected CREATE_BREAKAWAY_FROM_JOB = 0x%08x, got 0x%08x\n", expectedFlag, windows.CREATE_BREAKAWAY_FROM_JOB)
		os.Exit(1)
	}

	// 2. Verify bitwise OR combinations with other process creation flags
	combinedFlags := uint32(windows.CREATE_BREAKAWAY_FROM_JOB | windows.CREATE_SUSPENDED | windows.CREATE_NEW_CONSOLE)
	if combinedFlags&windows.CREATE_BREAKAWAY_FROM_JOB == 0 {
		fmt.Fprintf(os.Stderr, "expected CREATE_BREAKAWAY_FROM_JOB bit to be set in combined flags\n")
		os.Exit(1)
	}
	if combinedFlags&windows.CREATE_SUSPENDED == 0 {
		fmt.Fprintf(os.Stderr, "expected CREATE_SUSPENDED bit to be set in combined flags\n")
		os.Exit(1)
	}
	if combinedFlags&windows.CREATE_NEW_CONSOLE == 0 {
		fmt.Fprintf(os.Stderr, "expected CREATE_NEW_CONSOLE bit to be set in combined flags\n")
		os.Exit(1)
	}

	// 3. Verify windows.SysProcAttr CreationFlags field accepts CREATE_BREAKAWAY_FROM_JOB
	attr := windows.SysProcAttr{
		CreationFlags: windows.CREATE_BREAKAWAY_FROM_JOB | windows.CREATE_UNICODE_ENVIRONMENT,
	}
	if attr.CreationFlags&windows.CREATE_BREAKAWAY_FROM_JOB == 0 {
		fmt.Fprintf(os.Stderr, "expected CreationFlags in SysProcAttr to contain CREATE_BREAKAWAY_FROM_JOB\n")
		os.Exit(1)
	}

	// 4. Verify CREATE_BREAKAWAY_FROM_JOB is distinct from related job object limit flags
	if uint32(windows.CREATE_BREAKAWAY_FROM_JOB) == uint32(windows.JOB_OBJECT_LIMIT_BREAKAWAY_OK) {
		fmt.Fprintf(os.Stderr, "CREATE_BREAKAWAY_FROM_JOB should be distinct from JOB_OBJECT_LIMIT_BREAKAWAY_OK\n")
		os.Exit(1)
	}

	fmt.Println("golang.org/x/sys/windows.CREATE_BREAKAWAY_FROM_JOB contract verified successfully")
}