tb := new(paraBuilder)
		p.addBlock(tb)
		tb.table = new(tableBuilder)
		tb.table.start(hdr, text)
		return line{}, true
	}

	if b != nil {
		for i := p.lineDepth; i < len(p.stack); i++ {
			p.stack[i].pos.EndLine = p.lineno
		}
	} else {
		// Note: Ends anything without a matching prefix.
		b = new(paraBuilder)
		p.addBlock(b)
	}
	b.text = append(b.text, text)
	return line{}, true

		if isOverflowRecord {
			// Looks like an overflow record from the profBuf. Not much to
			// do here, we only want to report full records.
			continue
		}

		// Construct the stack for insertion to the stack table.
		nstk := 1
		pcBuf[0] = logicalStackSentinel
		for ; nstk < len(pcBuf) && nstk-1 < len(stk); nstk++ {
			pcBuf[nstk] = uintptr(stk[nstk-1])
		}

		// Write out a trace event.

	if bytes.Count(data, []byte("\n")) < 2 {
		childExitHook()
		os.Exit(0) // parent exited without crash report
	}

	log.Printf("parent reported crash:\n%s", data)

	// Parse the stack out of the crash report
	// and record a telemetry count for it.
	name, err := telemetryCounterName(data)
	if err != nil {
		// Keep count of how often this happens
		// so that we can investigate if necessary.

// 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

	Stacks   []CounterConfig `json:",omitempty"`
}

type CounterConfig struct {
	Name  string
	Rate  float64 // If X <= Rate, report this counter
	Depth int     `json:",omitempty"` // for stack counters
}

// A Report is what's uploaded (or saved locally)
type Report struct {
	Week     string  // first day this report covers (YYYY-MM-DD)
	LastWeek string  // Week field from latest previous report uploaded

}

// ReadStackCounter reads the given StackCounter.
func ReadStackCounter(c *counter.StackCounter) (stackCounts map[string]uint64, _ error) {
	return ic.ReadStack(c)
}

// ReadFile reads the counters and stack counters from the given file.
func ReadFile(name string) (counters, stackCounters map[string]uint64, _ error) {
	return ic.ReadFile(name)

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

//go:build cgo && !netgo && unix && !darwin

package net

/*
#define _GNU_SOURCE 1

#cgo CFLAGS: -fno-stack-protector
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>

#ifndef EAI_NODATA
#define EAI_NODATA -5

func Add(h Hook) {
	for !locked.CompareAndSwap(0, 1) {
		Gosched()
	}
	hooks = append(hooks, h)
	locked.Store(0)
}

// Run runs the exit hooks.
//
// If an exit hook panics, Run will throw with the panic on the stack.
// If an exit hook invokes exit in the same goroutine, the goroutine will throw.
// If an exit hook invokes exit in another goroutine, that exit will block.
func Run(code int) {
	for !locked.CompareAndSwap(0, 1) {

	ev := event.Type(evb)
	spec := r.specs[ev]
	args, err := r.readArgs(len(spec.Args))
	if err != nil {
		return Event{}, err
	}
	if spec.IsStack {
		len := int(args[1])
		for i := 0; i < len; i++ {
			// Each stack frame has four args: pc, func ID, file ID, line number.
			frame, err := r.readArgs(4)
			if err != nil {
				return Event{}, err
			}
			args = append(args, frame...)
		}
	}
	var data []byte
	if spec.HasData {

// Copyright 2023 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.

// Tests stack symbolization.

//go:build ignore

package main

import (
	"log"
	"net"
	"os"
	"runtime"
	"runtime/trace"
	"sync"
	"time"
)

func main() {
	if err := trace.Start(os.Stdout); err != nil {
		log.Fatalf("failed to start tracing: %v", err)