break
		}
	}
	return funcName
}

// Prune removes all nodes beneath a node matching dropRx, and not
// matching keepRx. If the root node of a Sample matches, the sample
// will have an empty stack.
func (p *Profile) Prune(dropRx, keepRx *regexp.Regexp) {
	prune := make(map[uint64]bool)
	pruneBeneath := make(map[uint64]bool)

	// simplifyFunc can be expensive, so cache results.

	}
	if spec.IsStack {
		len := int(args[1])
		for i := 0; i < len; i++ {
			line, err := r.nextLine()
			if err == io.EOF {
				return Event{}, fmt.Errorf("unexpected EOF while reading stack: args=%v", args)
			}
			if err != nil {
				return Event{}, err
			}
			frame, err := readArgs(line, frameFields)
			if err != nil {
				return Event{}, err
			}
			args = append(args, frame...)
		}
	}

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

package net

import (
	"internal/testenv"
	"reflect"
	"testing"
)

// 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

type resolveIPAddrTest struct {
	network       string
	litAddrOrName string

// lies between two functions.

package main

import (
	"runtime"
)

func main() {
	var stack [1]uintptr
	runtime.Callers(1, stack[:])
	f() // inlined function, to give main some inlining info
	for i := uintptr(0); true; i++ {
		f := runtime.FuncForPC(stack[0] + i)
		if f.Name() != "main.main" && f.Name() != "main.f" {
			// Reached next function successfully.
			break
		}
	}
}

	TLSBSS = 256

	// Do not insert instructions to allocate a stack frame for this function.
	// Only valid on functions that declare a frame size of 0.
	// TODO(mwhudson): only implemented for ppc64x at present.
	NOFRAME = 512

	// Function can call reflect.Type.Method or reflect.Type.MethodByName.
	REFLECTMETHOD = 1024

	// Function is the outermost frame of the call stack. Call stack unwinders
	// should stop at this function.
	TOPFRAME = 2048

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

// Issue 4316: the stack overflow check in the linker
// is confused when it encounters a split-stack function
// that needs 0 bytes of stack space.

package main

type Peano *Peano

func makePeano(n int) *Peano {
	if n == 0 {
		return nil
	}
	p := Peano(makePeano(n - 1))

	return []string{}
}

func main() {
	poison()
	f()
}

//go:noinline
func f() {
	(&T{}).M()
	grow(10000)
}

// grow stack, triggers stack copy
func grow(n int) {
	if n == 0 {
		return
	}
	grow(n-1)
}

// put some junk on stack, which cannot be valid address
//go:noinline
func poison() {
	x := [10]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
	g = x
}

				call = funcs[call.target]
			}
			// Seeing this error in a failed CI run? It indicates that
			// a function in the runtime package marked nowritebarrierrec
			// (the outermost stack element) was found, by a static
			// reachability analysis over the fully lowered optimized code,
			// to call a function (fn) that involves a write barrier.
			//
			// Even if the call path is infeasable,

	traceEvHeapObjectFree  // heap object free [timestamp, id]

	// Experimental goroutine stack events. IDs map reversibly to addresses.
	traceEvGoroutineStack      // stack exists [timestamp, id, order]
	traceEvGoroutineStackAlloc // stack alloc [timestamp, id, order]
	traceEvGoroutineStackFree  // stack free [timestamp, id]

	{"-fno-pie"},
	{"-fPIE"},
	{"-fno-PIE"},
	{"-fsplit-stack"},
	{"-fno-split-stack"},
	{"-fstack-xxx"},
	{"-fno-stack-xxx"},
	{"-fsanitize=hands"},
	{"-g"},
	{"-ggdb"},
	{"-march=souza"},
	{"-mcmodel=medium"},
	{"-mcpu=123"},
	{"-mfpu=123"},
	{"-mlarge-data-threshold=16"},
	{"-mtune=happybirthday"},
	{"-mstack-overflow"},
	{"-mno-stack-overflow"},
	{"-mmacosx-version"},
	{"-mnop-fun-dllimport"},