package main

import (
	"runtime"
	"unsafe"
)

func main() {
	defer func() {
		if recover() == nil {
			panic("did not panic")
		}
		pcs := make([]uintptr, 20)
		n := runtime.Callers(1, pcs)
		for _, pc := range pcs[:n] {
			if runtime.FuncForPC(pc).Name() == "main.main" {
				return
			}
		}
		panic("cannot find main.main in backtrace")
	}()

	prep()
	f() // should panic
}

	println(caller().frame.Function)

	// Used to erroneously print "main.call.name" instead of
	// "main.main".
	println(caller().name())
}

func caller() call {
	var pcs [3]uintptr
	n := runtime.Callers(1, pcs[:])
	frames := runtime.CallersFrames(pcs[:n])
	frame, _ := frames.Next()
	frame, _ = frames.Next()

	return call{frame: frame}
}

type call struct {
	frame runtime.Frame
}

// especially on software divide systems.

package main

import "runtime"

var A, B int

func divZero() int {
	defer func() {
		if p := recover(); p != nil {
			var pcs [512]uintptr
			runtime.Callers(2, pcs[:])
			runtime.GC()
		}
	}()
	return A / B
}

func main() {
	A = 1
	divZero()

package a

import (
	"fmt"
	"runtime"
	"strings"
)

var x = f() // line 15

func f() int {
	var b [4096]byte
	n := runtime.Stack(b[:], false) // line 19
	s := string(b[:n])
	var pcs [10]uintptr
	n = runtime.Callers(1, pcs[:]) // line 22

	// Check the Stack results.
	if debug {
		println(s)
	}
	if strings.Contains(s, "autogenerated") {
		panic("autogenerated code in traceback")
	}

// the highest priority.
func mergeWithPrecedence(pcs ...*meshconfig.ProxyConfig) *meshconfig.ProxyConfig {
	merged := &meshconfig.ProxyConfig{}
	for i := len(pcs) - 1; i >= 0; i-- {
		if pcs[i] == nil {
			continue
		}
		proxyConfigYaml, err := protomarshal.ToYAML(pcs[i])
		if err != nil {
			continue
		}

			}
		})
	}
}

//go:noinline
func callerStartLine(wantInlined bool) int {
	var pcs [1]uintptr
	n := runtime.Callers(2, pcs[:])
	if n != 1 {
		panic(fmt.Sprintf("no caller of callerStartLine? n = %d", n))
	}

	frames := runtime.CallersFrames(pcs[:])
	frame, _ := frames.Next()

	inlined := frame.Func == nil // Func always set to nil for inlined frames

	}
}

func newPrivateKey(keyType kubeadmapi.EncryptionAlgorithmType) (crypto.Signer, error) {
	lock.Lock()
	defer lock.Unlock()

	var pcs [50]uintptr
	nCallers := runtime.Callers(2, pcs[:])
	frames := runtime.CallersFrames(pcs[:nCallers])
	thisTest := ""
	for {
		frame, more := frames.Next()
		if strings.HasSuffix(frame.File, "_test.go") && testFunction.MatchString(frame.Function) {

var sinkStr string

var bad = false

func shouldPanic(f func()) {
	defer func() {
		if recover() == nil {
			panic("did not panic")
		}
		var pcs [10]uintptr
		n := runtime.Callers(1, pcs[:])
		iter := runtime.CallersFrames(pcs[:n])
		buf := ""
		for {
			frame, more := iter.Next()
			buf += fmt.Sprintf("%s:%d %s\n", frame.File, frame.Line, frame.Function)
			if !more {
				break
			}

			}
			frames = append(frames, pc)

			if _, ok := pcs[pc]; !ok {
				pcs[pc] = frame{
					pc:     pc,
					funcID: stringID(funcID),
					fileID: stringID(fileID),
					line:   line,
				}
			}
		}

		// Add the stack to the map.
		if err := stackTable.insert(stackID(id), stack{pcs: frames}); err != nil {
			return err
		}
	}
	return nil
}

	if !w.h.Enabled(context.Background(), level) {
		return 0, nil
	}
	var pc uintptr
	if !internal.IgnorePC && w.capturePC {
		// skip [runtime.Callers, w.Write, Logger.Output, log.Print]
		var pcs [1]uintptr
		runtime.Callers(4, pcs[:])
		pc = pcs[0]
	}

	// Remove final newline.
	origLen := len(buf) // Report that the entire buf was written.
	if len(buf) > 0 && buf[len(buf)-1] == '\n' {
		buf = buf[:len(buf)-1]
	}