MOVD	$debugCallFrameTooLarge<>(SB), R0
	MOVD	R0, 8(RSP)
	MOVD	$20, R0
	MOVD	R0, 16(RSP) // length of debugCallFrameTooLarge string
	MOVD	$8, R20
	BREAK
	JMP	restore

restore:
	// Calls and failures resume here.
	//
	// Set R20 to 16 and invoke BRK. The debugger should restore
	// all registers except for PC and RSP and resume execution.
	MOVD	$16, R20
	BREAK

	oldUmask := syscall.Umask(umask)
	defer syscall.Umask(oldUmask)

	// We have set a umask, but if the parent directory happens to have a default
	// ACL, the umask may be ignored. To prevent spurious failures from an ACL,
	// we create a non-sticky directory as a “control case” to compare against our
	// sticky-bit “experiment”.
	control := filepath.Join(dir, "control")
	if err := Mkdir(control, 0755); err != nil {

					if err != nil {
						// If the timing didn't work out, it is possible for this Dial
						// to return an error (depending on the kernel's buffering behavior).
						// In https://go.dev/issue/65240 we saw failures with ECONNREFUSED
						// and ECONNRESET.
						//
						// What this test really cares about is the behavior of Accept, not
						// Dial, so just log the error and ignore it.
						t.Logf("DialContext: %v", err)

	// at least some of these OCONVNOPs (e.g., reinsert them after the
	// OADDR operation), but at least walkCompare needs to be fixed to
	// support that (see trybot failures on go.dev/cl/541715, PS1).
	if ir.IsAddressable(n) {
		if name, ok := ir.OuterValue(n).(*ir.Name); ok && name.Op() == ir.ONAME {
			if name.Class == ir.PAUTO && !name.Addrtaken() && ssa.CanSSA(name.Type()) {
				goto Copy

	"github.com/google/pprof/profile"
)

// fetchProfiles fetches and symbolizes the profiles specified by s.
// It will merge all the profiles it is able to retrieve, even if
// there are some failures. It will return an error if it is unable to
// fetch any profiles.
func fetchProfiles(s *source, o *plugin.Options) (*profile.Profile, error) {
	sources := make([]profileSource, 0, len(s.Sources))

//
// After a successful call to Start the [Cmd.Wait] method must be called in
// order to release associated system resources.
func (c *Cmd) Start() error {
	// Check for doubled Start calls before we defer failure cleanup. If the prior
	// call to Start succeeded, we don't want to spuriously close its pipes.
	if c.Process != nil {
		return errors.New("exec: already started")
	}

	started := false
	defer func() {

// which invokes b.Run in its own tests (see sub_test.go).
var hideStdoutForTesting = false

// Run benchmarks f as a subbenchmark with the given name. It reports
// whether there were any failures.
//
// A subbenchmark is like any other benchmark. A benchmark that calls Run at
// least once will not be measured itself and will be called once with N=1.
func (b *B) Run(name string, f func(b *B)) bool {

			// Trigger lots of synchronization and memory reads/writes to
			// increase the likelihood that the race described in #27660
			// results in corruption of ThreadSanitizer's internal state
			// and thus an assertion failure or segfault.
			i := 0
			for ctx.Err() == nil {
				j := rand.Intn(100)
				locks[j].Lock()
				ints[j]++
				locks[j].Unlock()
				// needed for gccgo, to avoid creation of an

	// Changes in how we account for non-file form data may cause the exact point
	// where we change from rejecting the form as too large to accepting it to vary,
	// but we should see both successes and failures.
	const failWhenMaxMemoryLessThan = 128
	for maxMemory := int64(0); maxMemory < failWhenMaxMemoryLessThan*2; maxMemory += 16 {
		b := strings.NewReader(testBody)
		r := NewReader(b, boundary)

			t.Skip("skipping gdb tests on AIX; see https://golang.org/issue/35710")
		}
	case "plan9":
		t.Skip("there is no gdb on Plan 9")
	}
}

func checkGdbVersion(t *testing.T) {
	// Issue 11214 reports various failures with older versions of gdb.
	out, err := exec.Command("gdb", "--version").CombinedOutput()
	if err != nil {
		t.Skipf("skipping: error executing gdb: %v", err)
	}
	re := regexp.MustCompile(`([0-9]+)\.([0-9]+)`)