}
	if testing.Short() && testenv.Builder() != "" && os.Getenv("USER") == "swarming" {
		// The Go build system's swarming user is known not to be root.
		// Unfortunately, it sometimes appears as root due the current
		// implementation of a no-network check using 'unshare -n -r'.
		// Since this test does need root to work, we need to skip it.
		t.Skip("skipping root only test on a non-root builder")
	}

	if runtime.GOOS == "android" {

// requires that the stream of values produced by math/rand remain unchanged.
// int31n can thus only be used internally, by newly introduced APIs.
//
// For implementation details, see:
// https://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction
// https://lemire.me/blog/2016/06/30/fast-random-shuffling
func (r *Rand) int31n(n int32) int32 {
	v := r.Uint32()

// See the License for the specific language governing permissions and
// limitations under the License.

// Package driver implements the core pprof functionality. It can be
// parameterized with a flag implementation, fetch and symbolize
// mechanisms.
package driver

import (
	"bytes"
	"fmt"
	"io"
	"os"
	"path/filepath"
	"regexp"
	"strings"

	"github.com/google/pprof/internal/plugin"

// but it is also input to mksyscall,
// which parses the //sys lines and generates system call stubs.
// Note that sometimes we use a lowercase //sys name and wrap
// it in our own nicer implementation, either here or in
// syscall_bsd.go or syscall_unix.go.

package unix

import (
	"sync"
	"unsafe"
)

// See version list in https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/sys/param.h

// This is an implementation based on the s390x
// implementation.

// Find a separator with 2 <= len <= 32 within a string.
// Separators with lengths of 2, 3 or 4 are handled
// specially.

// This works on power8 and above. The loads and
// compares are done in big endian order
// since that allows the used of VCLZD, and allows
// the same implementation to work on big and little

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Implementation of Server

package httptest

import (
	"crypto/tls"
	"crypto/x509"
	"flag"
	"fmt"
	"log"
	"net"
	"net/http"
	"net/http/internal/testcert"
	"os"
	"strings"
	"sync"
	"time"
)

		check.labels(body)
	}

	if sig.results.Len() > 0 && !check.isTerminating(body, "") {
		check.error(body.Rbrace, MissingReturn, "missing return")
	}

	// spec: "Implementation restriction: A compiler may make it illegal to
	// declare a variable inside a function body if the variable is never used."
	check.usage(sig.scope)
}

func (check *Checker) usage(scope *Scope) {
	var unused []*Var

// PreferGo option used concurrently are all dialed properly.
func TestConcurrentPreferGoResolversDial(t *testing.T) {
	switch runtime.GOOS {
	case "plan9":
		// TODO: plan9 implementation of the resolver uses the Dial function since
		// https://go.dev/cl/409234, this test could probably be reenabled.
		t.Skipf("skip on %v", runtime.GOOS)
	}

	testenv.MustHaveExternalNetwork(t)

var benchmarkLock sync.Mutex

// Used for every benchmark for measuring memory.
var memStats runtime.MemStats

// InternalBenchmark is an internal type but exported because it is cross-package;
// it is part of the implementation of the "go test" command.
type InternalBenchmark struct {
	Name string
	F    func(b *B)
}

// B is a type passed to [Benchmark] functions to manage benchmark

// It also returns the number of indirections required to get to the
// implementation.
func implementsInterface(typ, gobEncDecType reflect.Type) (success bool, indir int8) {
	if typ == nil {
		return
	}
	rt := typ
	// The type might be a pointer and we need to keep
	// dereferencing to the base type until we find an implementation.
	for {
		if rt.Implements(gobEncDecType) {
			return true, indir
		}