nproc = 7
	}
	if setNproc {
		var rlim syscall.Rlimit
		if syscall.Getrlimit(nproc, &rlim) == nil {
			max := int(rlim.Cur) / (threads + 5)
			if attempts > max {
				t.Logf("lowering attempts from %d to %d for RLIMIT_NPROC", attempts, max)
				attempts = max
			}
		}
	}

	if os.Getenv("test18146") == "exec" {
		runtime.GOMAXPROCS(1)
		for n := threads; n > 0; n-- {
			go func() {

// Exported for testing only.
import (
	"unicode/utf8"
)

var IsSpace = isSpace

const DefaultBufSize = defaultBufSize

func (s *Scanner) MaxTokenSize(n int) {
	if n < utf8.UTFMax || n > 1e9 {
		panic("bad max token size")
	}
	if n < len(s.buf) {
		s.buf = make([]byte, n)
	}
	s.maxTokenSize = n
}

// ErrOrEOF is like Err, but returns EOF. Used to test a corner case.
func (s *Scanner) ErrOrEOF() error {

pkg syscall (freebsd-386), const AF_INET6_SDP ideal-int
pkg syscall (freebsd-386), const AF_INET_SDP = 40
pkg syscall (freebsd-386), const AF_INET_SDP ideal-int
pkg syscall (freebsd-386), const AF_MAX = 42
pkg syscall (freebsd-386), const DLT_MATCHING_MAX = 246
pkg syscall (freebsd-386), const DLT_MPEG_2_TS = 243
pkg syscall (freebsd-386), const DLT_MPEG_2_TS ideal-int
pkg syscall (freebsd-386), const DLT_NFC_LLCP = 245

static unsigned int
goDummyCallbackThread(void* p)
{
	int i, max;

	max = *(int*)p;
	for(i=0; i<max; i++)
		goDummy();
	return 0;
}

int
callGoInCThread(int max)
{
	uintptr_t thread_id;
	thread_id = _beginthreadex(0, 0, goDummyCallbackThread, &max, 0, 0);
	WaitForSingleObject((HANDLE)thread_id, INFINITE);
	CloseHandle((HANDLE)thread_id);
	return max;

	case *ast.SliceExpr:
		f.walk(&n.X, ctxExpr, visit)
		if n.Low != nil {
			f.walk(&n.Low, ctxExpr, visit)
		}
		if n.High != nil {
			f.walk(&n.High, ctxExpr, visit)
		}
		if n.Max != nil {
			f.walk(&n.Max, ctxExpr, visit)
		}
	case *ast.TypeAssertExpr:
		f.walk(&n.X, ctxExpr, visit)
		f.walk(&n.Type, ctxType, visit)
	case *ast.CallExpr:
		if context == ctxAssign2 {

pkg syscall (netbsd-arm64-cgo), const ETHER_HDR_LEN ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHER_MAX_LEN = 1518
pkg syscall (netbsd-arm64-cgo), const ETHER_MAX_LEN ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHER_MAX_LEN_JUMBO = 9018
pkg syscall (netbsd-arm64-cgo), const ETHER_MAX_LEN_JUMBO ideal-int
pkg syscall (netbsd-arm64-cgo), const ETHERMIN = 46
pkg syscall (netbsd-arm64-cgo), const ETHERMIN ideal-int

#cgo LDFLAGS: -framework CoreFoundation -framework Security
#include <TargetConditionals.h>
#include <CoreFoundation/CoreFoundation.h>
#include <Security/Security.h>
#if TARGET_OS_IPHONE == 0 && __MAC_OS_X_VERSION_MAX_ALLOWED < 101200
  typedef CFStringRef SecKeyAlgorithm;
  static CFDataRef SecKeyCreateSignature(SecKeyRef key, SecKeyAlgorithm algorithm, CFDataRef dataToSign, CFErrorRef *error){return NULL;}

)

// Size constants from various tar specifications.
const (
	blockSize  = 512 // Size of each block in a tar stream
	nameSize   = 100 // Max length of the name field in USTAR format
	prefixSize = 155 // Max length of the prefix field in USTAR format

	// Max length of a special file (PAX header, GNU long name or link).
	// This matches the limit used by libarchive.
	maxSpecialFileSize = 1 << 20
)

// The maximum token size must be less than the larger of max and cap(buf).
// If max <= cap(buf), [Scanner.Scan] will use this buffer only and do no allocation.
//
// By default, [Scanner.Scan] uses an internal buffer and sets the
// maximum token size to [MaxScanTokenSize].
//
// Buffer panics if it is called after scanning has started.
func (s *Scanner) Buffer(buf []byte, max int) {
	if s.scanCalled {

#cgo LDFLAGS: -framework CoreFoundation -framework Security
#include <TargetConditionals.h>
#include <CoreFoundation/CoreFoundation.h>
#include <Security/Security.h>
#if TARGET_OS_IPHONE == 0 && __MAC_OS_X_VERSION_MAX_ALLOWED < 101200
  typedef CFStringRef SecKeyAlgorithm;
  static CFDataRef SecKeyCreateSignature(SecKeyRef key, SecKeyAlgorithm algorithm, CFDataRef dataToSign, CFErrorRef *error){return NULL;}