Eq("a", "loop2", "exit1"),
		),
		Bloc("loop2",
			Eq("a", "loop1", "exit2"),
		),
		Bloc("exit1",
			// store before call, y is available in a register
			Valu("mem2", OpAMD64MOVQstore, types.TypeMem, 0, nil, "p", "y", "mem"),
			Valu("mem3", OpAMD64CALLstatic, types.TypeMem, 0, AuxCallLSym("_"), "mem2"),
			Exit("mem3"),
		),
		Bloc("exit2",

				expected: "blub blix",
			},
			{
				mode: "panics",
				musthave: []string{
					"fatal error: exit hook invoked panic",
					"main.testPanics",
				},
			},
			{
				mode: "callsexit",
				musthave: []string{
					"fatal error: exit hook invoked exit",
				},
			},
			{
				mode:     "exit2",
				expected: "",
			},
		}

		exe, err := buildTestProg(t, "testexithooks", bmode)
		if err != nil {

	f2 := func() { os.Exit(1) }
	f3 := func() { println("good") }
	exithook.Add(exithook.Hook{F: f1, RunOnFailure: true})
	exithook.Add(exithook.Hook{F: f2, RunOnFailure: true})
	exithook.Add(exithook.Hook{F: f3, RunOnFailure: true})
	os.Exit(1)
}

func testExit2() {
	f1 := func() { time.Sleep(100 * time.Millisecond) }
	exithook.Add(exithook.Hook{F: f1})
	for range 10 {
		go os.Exit(0)
	}
	os.Exit(0)

import (
	"sync"
	_ "unsafe" // for linkname
)

// PanicOnExit0 reports whether to panic on a call to os.Exit(0).
// This is in the testlog package because, like other definitions in
// package testlog, it is a hook between the testing package and the
// os package. This is used to ensure that an early call to os.Exit(0)
// does not cause a test to pass.
func PanicOnExit0() bool {
	panicOnExit0.mu.Lock()
	defer panicOnExit0.mu.Unlock()

	}
	atExitFuncs = nil
}

// Exit exits with code after executing all atExitFuncs.
func Exit(code int) {
	runAtExitFuncs()
	os.Exit(code)
}

// Exitf logs an error message then calls Exit(2).
func Exitf(format string, a ...interface{}) {
	fmt.Fprintf(os.Stderr, os.Args[0]+": "+format+"\n", a...)
	nerrors++
	if *flagH {
		panic("error")
	}
	Exit(2)
}

[short] skip

env GO111MODULE=on

# If a test invoked by 'go test' exits with a zero status code,
# it will panic.
! go test ./zero
! stdout ^ok
! stdout 'exit status'
stdout 'panic'
stdout ^FAIL

# If a test exits with a non-zero status code, 'go test' fails normally.
! go test ./one
! stdout ^ok
stdout 'exit status'
! stdout 'panic'
stdout ^FAIL

# Ensure that other flags still do the right thing.

# a test that exits with an I/O stream held open
# should fail after a reasonable delay, not wait forever.
# (As of the time of writing, that delay is 10% of the timeout,
# but this test does not depend on its specific value.)

[short] skip 'runs a test that hangs until its WaitDelay expires'

! go test -v -timeout=1m .

	# After the test process itself prints PASS and exits,

! stdout '"Test":.*\n\z'

# 'go test -json' should say a test passes if it exits 0 and prints nothing.
# TODO(golang.org/issue/29062): this should fail in the future.
go test -json ./exit0main
stdout '"Action":"pass".*\n\z'
! stdout '"Test":.*\n\z'

# 'go test -json' should say a test fails if it exits 1 and prints nothing.
! go test -json ./exit1main
stdout '"Action":"fail".*\n\z'
! stdout '"Test":.*\n\z'

	18: {exits: [10]int{down: 16, east: 19, west: 18, up: 22}},
	19: {exits: [10]int{up: 29, west: 18, ne: 15, east: 20, south: 30}},
	20: {exits: [10]int{ne: 19, west: 20, se: 21}},
	21: {exits: [10]int{north: 20}}, // Dead End
	22: {exits: [10]int{north: 18, east: 24, down: 23, south: 28, west: 26, nw: 22}},
	23: {exits: [10]int{east: 22, west: 28, up: 24}},
	24: {exits: [10]int{ne: 25, down: 23, nw: 28, sw: 26}},

	// ErrExit is an error returned when kubeadm is about to exit
	ErrExit = errors.New("exit")
)

// fatal prints the message if set and then exits.
func fatal(msg string, code int) {
	if len(msg) > 0 {
		// add newline if needed
		if !strings.HasSuffix(msg, "\n") {
			msg += "\n"
		}

		fmt.Fprint(os.Stderr, msg)
	}
	os.Exit(code)
}