runtime_StoreReluintptr(&p.localSize, uintptr(size))     // store-release
	return &local[pid], pid
}

// poolCleanup should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/bytedance/gopkg
//   - github.com/songzhibin97/gkit
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//

// Package debug contains facilities for programs to debug themselves while
// they are running.
package debug

import (
	"internal/poll"
	"os"
	"runtime"
	_ "unsafe" // for linkname
)

// PrintStack prints to standard error the stack trace returned by runtime.Stack.
func PrintStack() {
	os.Stderr.Write(Stack())
}

// Stack returns a formatted stack trace of the goroutine that calls it.

// clock sources.
//
// nosplit because it's called from exitsyscall, which is nosplit.
//
// traceClockNow is called by golang.org/x/exp/trace using linkname.
//
//go:linkname traceClockNow
//go:nosplit
func traceClockNow() traceTime {
	if osHasLowResClock {
		return traceTime(cputicks() / traceTimeDiv)
	}
	return traceTime(nanotime() / traceTimeDiv)
}

func CPUProfile() []byte {
	panic("CPUProfile no longer available")
}

// runtime/pprof.runtime_cyclesPerSecond should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/grafana/pyroscope-go/godeltaprof
//   - github.com/pyroscope-io/godeltaprof
//
// Do not remove or change the type signature.

	// compiler has provided some good hash codes for us.
	return uintptr(inter.Type.Hash ^ typ.Hash)
}

// getitab should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/bytedance/sonic
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname getitab

	exitsyscall()
	return args.r1, args.r2, args.err
}
func syscallX()

// golang.org/x/sys linknames syscall.syscall6
// (in addition to standard package syscall).
// Do not remove or change the type signature.
//
// syscall.syscall6 is meant for package syscall (and x/sys),
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/tetratelabs/wazero
//

			}
		}
	}
	return unsafe.Pointer(&zeroVal[0])
}

// mapaccess2_fast32 should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/ugorji/go/codec
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname mapaccess2_fast32

}

// IsPollDescriptor reports whether fd is the descriptor being used by the poller.
// This is only used for testing.
//
// IsPollDescriptor should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/opencontainers/runc
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname IsPollDescriptor

// is not necessarily true as allocations can have trailing padding,
// and multiple variables may be packed into a single allocation.
//
// checkptrBase should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/bytedance/sonic
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname checkptrBase

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package net

import (
	"context"
	"internal/bytealg"
	"runtime"
	"sync"
	_ "unsafe" // for linkname
)

// BUG(rsc,mikio): On DragonFly BSD and OpenBSD, listening on the
// "tcp" and "udp" networks does not listen for both IPv4 and IPv6
// connections. This is due to the fact that IPv4 traffic will not be