// number of net tests that can run concurrently so that the overall number
		// of network connections won't exceed the limit.
		_, dup := scriptNetEnabled.LoadOrStore(t, true)
		if !dup {
			// Acquire a net token for this test until the test completes.
			netTestSem <- struct{}{}
			t.Cleanup(func() {
				<-netTestSem
				scriptNetEnabled.Delete(t)
			})
		}
	}

		ln.fd.ctl.Close()
		return err
	}
	if err := ln.fd.ctl.Close(); err != nil {
		return err
	}
	return nil
}

func (ln *TCPListener) file() (*os.File, error) {
	f, err := ln.dup()
	if err != nil {
		return nil, err
	}
	return f, nil
}

func (sl *sysListener) listenTCP(ctx context.Context, laddr *TCPAddr) (*TCPListener, error) {
	fd, err := listenPlan9(ctx, sl.network, laddr)

package poll

import (
	"internal/byteorder"
	"sync/atomic"
	"syscall"
	"unsafe"
)

type SysFile struct {
	// RefCountPtr is a pointer to the reference count of Sysfd.
	//
	// WASI preview 1 lacks a dup(2) system call. When the os and net packages
	// need to share a file/socket, instead of duplicating the underlying file
	// descriptor, we instead provide a way to copy FD instances and manage the

					t.Errorf("inverse(%g) = %g, not ∈ [%g, %g)", trackMass, inv, l, u)
				}
			}
		}
	}
}

// aeq returns true if x and y are equal up to 8 digits (1 part in 100
// million).
// TODO(amedee) dup of gc_test.go
func aeq(x, y float64) bool {
	if x < 0 && y < 0 {
		x, y = -x, -y
	}
	const digits = 8
	factor := 1 - math.Pow(10, -digits+1)
	return x*factor <= y && y*factor <= x

		// to a full pipe buffer don't get lost.
		fd2, _, err := poll.DupCloseOnExec(int(f.Fd()))
		if err != nil {
			return err
		}
		runtime.KeepAlive(f) // prevent finalization before dup
		fd = uintptr(fd2)
	}
	if prev := runtime_setCrashFD(fd); prev != ^uintptr(0) {
		// We use NewFile+Close because it is portable
		// unlike syscall.Close, whose parameter type varies.

// name of the directory containing names and control files for all open file descriptors
var dupdev, _ = BytePtrFromString("#d")

// forkAndExecInChild forks the process, calling dup onto 0..len(fd)
// and finally invoking exec(argv0, argvv, envv) in the child.
// If a dup or exec fails, it writes the error string to pipe.
// (The pipe write end is close-on-exec so if exec succeeds, it will be closed.)
//

import static org.objectweb.asm.Opcodes.ARETURN;
import static org.objectweb.asm.Opcodes.ASTORE;
import static org.objectweb.asm.Opcodes.CHECKCAST;
import static org.objectweb.asm.Opcodes.DUP;
import static org.objectweb.asm.Opcodes.F_SAME;
import static org.objectweb.asm.Opcodes.GETFIELD;
import static org.objectweb.asm.Opcodes.GETSTATIC;
import static org.objectweb.asm.Opcodes.GOTO;

import org.gradle.kotlin.dsl.support.bytecode.ARETURN
import org.gradle.kotlin.dsl.support.bytecode.ASTORE
import org.gradle.kotlin.dsl.support.bytecode.CHECKCAST
import org.gradle.kotlin.dsl.support.bytecode.DUP
import org.gradle.kotlin.dsl.support.bytecode.GETSTATIC
import org.gradle.kotlin.dsl.support.bytecode.ICONST_0
import org.gradle.kotlin.dsl.support.bytecode.INVOKEINTERFACE

	// Store the name and type provided by the user....
	if t, dup := nameToConcreteType.LoadOrStore(name, reflect.TypeOf(value)); dup && t != ut.user {
		panic(fmt.Sprintf("gob: registering duplicate types for %q: %s != %s", name, t, ut.user))
	}

	// but the flattened type in the type table, since that's what decode needs.
	if n, dup := concreteTypeToName.LoadOrStore(ut.base, name); dup && n != name {
		nameToConcreteType.Delete(name)

)

// Implemented in runtime package.
func runtime_BeforeFork()
func runtime_AfterFork()
func runtime_AfterForkInChild()

// Fork, dup fd onto 0..len(fd), and exec(argv0, argvv, envv) in child.
// If a dup or exec fails, write the errno error to pipe.
// (Pipe is close-on-exec so if exec succeeds, it will be closed.)
// In the child, this function must not acquire any locks, because