}

	t.runNames = flag.Args()

	// Set GOTRACEBACK to system if the user didn't set a level explicitly.
	// Since we're running tests for Go, we want as much detail as possible
	// if something goes wrong.
	//
	// Set it before running any commands just in case something goes wrong.
	if ok := isEnvSet("GOTRACEBACK"); !ok {
		if err := os.Setenv("GOTRACEBACK", "system"); err != nil {
			if t.keepGoing {

	const prefix = "crash/crash"
	return counter.EncodeStack(pcs, prefix), nil
}

// parseStackPCs parses the parent process's program counters for the
// first running goroutine out of a GOTRACEBACK=system traceback,
// adjusting them so that they are valid for the child process's text
// segment.
//
// This function returns only program counter values, ensuring that

// SetTraceback sets the amount of detail printed by the runtime in
// the traceback it prints before exiting due to an unrecovered panic
// or an internal runtime error.
// The level argument takes the same values as the GOTRACEBACK
// environment variable. For example, SetTraceback("all") ensure
// that the program prints all goroutines when it crashes.
// See the package runtime documentation for details.

		timer := time.AfterFunc(timeout, func() {
			// Panic — instead of calling t.Error and returning from the test — so
			// that we get a useful goroutine dump if the test times out, especially
			// if GOTRACEBACK=system or GOTRACEBACK=crash is set.
			if !started.Load() {
				panic("finalizer did not start")
			} else {

func init() {
	// We're testing the runtime, so make tracebacks show things
	// in the runtime. This only raises the level, so it won't
	// override GOTRACEBACK=crash from the user.
	SetTracebackEnv("system")
}

var errf error

func errfn() error {
	return errf
}

func errfn1() error {
	return io.EOF
}

func BenchmarkIfaceCmp100(b *testing.B) {

		if iscgo {
			print("signal arrived during external code execution\n")
		}
		gp = g0.m.curg
	}
	print("\n")

	g0.m.throwing = throwTypeRuntime
	g0.m.caughtsig.set(gp)

	level, _, docrash := gotraceback()
	if level > 0 {
		tracebacktrap(r.ip(), r.sp(), r.lr(), gp)
		tracebackothers(gp)
		dumpregs(r)
	}

	if docrash {
		dieFromException(info, r)
	}

	exit(2)
}

		"GOEXE=" + cfg.ExeSuffix,
		"GOEXPERIMENT=" + os.Getenv("GOEXPERIMENT"),
		"GOOS=" + runtime.GOOS,
		"TESTGO_GOHOSTOS=" + goHostOS,
		"GOPROXY=" + proxyURL,
		"GOPRIVATE=",
		"GOROOT=" + testGOROOT,
		"GOTRACEBACK=system",
		"TESTGONETWORK=panic", // allow only local connections by default; the [net] condition resets this
		"TESTGO_GOROOT=" + testGOROOT,
		"TESTGO_EXE=" + testGo,
		"TESTGO_VCSTEST_HOST=" + httpURL.Host,

	// To help debugging, immediately log version
	logger.Info("Starting", "version", version.Get())

	logger.Info("Golang settings", "GOGC", os.Getenv("GOGC"), "GOMAXPROCS", os.Getenv("GOMAXPROCS"), "GOTRACEBACK", os.Getenv("GOTRACEBACK"))

	// Start events processing pipeline.
	c.EventBroadcaster.StartStructuredLogging(0)
	c.EventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: c.Client.CoreV1().Events("")})

		noSignalStack(sig)
	} else {
		sigNotOnStack(sig, sp, mp)
	}
	dropm()
	return false
}

// crashing is the number of m's we have waited for when implementing
// GOTRACEBACK=crash when a signal is received.
var crashing atomic.Int32

// testSigtrap and testSigusr1 are used by the runtime tests. If
// non-nil, it is called on SIGTRAP/SIGUSR1. If it returns true, the

// at fault for the failure, such as racing map writes.
//
// fatal does not include runtime frames, system goroutines, or frame metadata
// (fp, sp, pc) in the stack trace unless GOTRACEBACK=system or higher.
//
//go:nosplit
func fatal(s string) {
	// Everything fatal does should be recursively nosplit so it
	// can be called even when it's unsafe to grow the stack.
	systemstack(func() {