cfg.CallTree = true
		cfg.Trim = false
		cfg.Granularity = "filefunctions"
	})
	if rpt == nil {
		return // error already reported
	}

	// Make stack data and generate corresponding JSON.
	stacks := rpt.Stacks()
	b, err := json.Marshal(stacks)
	if err != nil {
		http.Error(w, "error serializing stacks for flame graph",
			http.StatusInternalServerError)

func NewCFBDecrypter(block Block, iv []byte) Stream {
	return newCFB(block, iv, true)
}

func newCFB(block Block, iv []byte, decrypt bool) Stream {
	blockSize := block.BlockSize()
	if len(iv) != blockSize {
		// stack trace will indicate whether it was de or encryption
		panic("cipher.newCFB: IV length must equal block size")
	}
	x := &cfb{
		b:       block,
		out:     make([]byte, blockSize),
		next:    make([]byte, blockSize),

	boring    *boring.PublicKeyECDH
}

// Bytes returns a copy of the encoding of the public key.
func (k *PublicKey) Bytes() []byte {
	// Copy the public key to a fixed size buffer that can get allocated on the
	// caller's stack after inlining.
	var buf [133]byte
	return append(buf[:0], k.publicKey...)
}

// Equal returns whether x represents the same public key as k.
//

// return value is only set on linux to be used in osinit().
func madvise(addr unsafe.Pointer, n uintptr, flags int32) int32

// exitThread terminates the current thread, writing *wait = freeMStack when
// the stack is safe to reclaim.
//
//go:noescape
func exitThread(wait *atomic.Uint32)

//go:noescape
func obsdsigprocmask(how int32, new sigset) sigset

//go:nosplit
//go:nowritebarrierrec

	//
	// To observe the monitor in action, replace the entire text
	// of this comment with "Output:" and run this command:
	//
	//    $ go test -run=ExampleSetCrashOutput_monitor runtime/debug
	//    panic: oops
	//    ...stack...
	//    monitor: saved crash report at /tmp/10804884239807998216.crash
}

// appmain represents the 'main' function of your application.
func appmain() {
	monitor()

	// Run the application.
	println("hello")

// they might have been locked at the time of the fork. This means
// no rescheduling, no malloc calls, and no new stack segments.
// For the same reason compiler does not race instrument it.
// The calls to rawSyscall are okay because they are assembly
// functions that do not grow the stack.
//
//go:norace

		// so we don't need to use mp.locks
		// on the fast path, which is that the
		// first attempt succeeds.
		x, ok := c.Next()
		if ok {
			return x
		}
		mp.locks++ // hold m even though c.Refill may do stack split checks
		c.Refill()
		mp.locks--
	}
}

// mrandinit initializes the random state of an m.
func mrandinit(mp *m) {
	var seed [4]uint64
	for i := range seed {
		seed[i] = bootstrapRand()

)

func assert(p bool) {
	if !p {
		msg := "assertion failed"
		// Include information about the assertion location. Due to panic recovery,
		// this location is otherwise buried in the middle of the panicking stack.
		if _, file, line, ok := runtime.Caller(1); ok {
			msg = fmt.Sprintf("%s:%d: %s", file, line, msg)
		}
		panic(msg)
	}
}

// An errorDesc describes part of a type-checking error.
type errorDesc struct {

// This file implements API tests across platforms and will never have a build
// tag.

package net

import (
	"internal/testenv"
	"os"
	"runtime"
	"testing"
	"time"
)

// The full stack test cases for IPConn have been moved to the
// following:
//	golang.org/x/net/ipv4
//	golang.org/x/net/ipv6
//	golang.org/x/net/icmp

func TestTCPListenerSpecificMethods(t *testing.T) {
	switch runtime.GOOS {

// and then blocks the current goroutine on c.
func coroswitch(c *coro) {
	gp := getg()
	gp.coroarg = c
	mcall(coroswitch_m)
}

// coroswitch_m is the implementation of coroswitch
// that runs on the m stack.
//
// Note: Coroutine switches are expected to happen at
// an order of magnitude (or more) higher frequency
// than regular goroutine switches, so this path is heavily
// optimized to remove unnecessary work.