// Verify that append arguments requirements are enforced by the
// compiler.

package main

func main() {

	s := make([]int, 8)

	_ = append()           // ERROR "missing arguments to append|not enough arguments for append"
	_ = append(s...)       // ERROR "cannot use ... on first argument|not enough arguments in call to append"

	waitingDigest := make([]debug.RequestDump, 0, q.requestsWaiting.Length())
	q.requestsWaiting.Walk(func(r *request) bool {
		waitingDigest = append(waitingDigest, dumpRequest(includeDetails)(r))
		return true
	})
	executingDigest := SetMapReduce(dumpRequest(includeDetails), append1[debug.RequestDump])(q.requestsExecuting)

	sum := q.requestsWaiting.QueueSum()
	queueSum := debug.QueueSum{
		InitialSeatsSum: sum.InitialSeatsSum,

func append1(s []int, x int) []int { // ERROR "leaking param: s$"
	sv := reflect.ValueOf(s)     // ERROR "s escapes to heap"
	xv := reflect.ValueOf(x)     // ERROR "x escapes to heap"
	rv := reflect.Append(sv, xv) // ERROR "... argument does not escape"
	return rv.Interface().([]int)
}

// Unfortunate: s doesn't need escape, only leak to result.

	_ = append(s, "foo"...)
	_ = append(S(s), "foo" /* ERRORx `cannot use .* in argument to append` */ )
	_ = append(S(s), "foo"...)
	_ = append(s, t /* ERROR "cannot use t" */ )
	_ = append(s, t...)
	_ = append(s, T("foo")...)
	_ = append(S(s), t /* ERROR "cannot use t" */ )
	_ = append(S(s), t...)
	_ = append(S(s), T("foo")...)
	_ = append([]string{}, t /* ERROR "cannot use t" */ , "foo")
	_ = append([]T{}, t, "foo")
}

	defer qs.lock.Unlock()
	d := debug.QueueSetDump{
		Queues:                     make([]debug.QueueDump, len(qs.queues)),
		QueuelessExecutingRequests: SetMapReduce(dumpRequest(includeRequestDetails), append1[debug.RequestDump])(qs.requestsExecutingSet),
		Waiting:                    qs.totRequestsWaiting,
		Executing:                  qs.totRequestsExecuting,
		SeatsInUse:                 qs.totSeatsInUse,

	"golang.org/x/tools/go/types/typeutil"
)

//go:embed doc.go
var doc string

var Analyzer = &analysis.Analyzer{
	Name:     "appends",
	Doc:      analysisutil.MustExtractDoc(doc, "appends"),
	URL:      "https://pkg.go.dev/golang.org/x/tools/go/analysis/passes/appends",
	Requires: []*analysis.Analyzer{inspect.Analyzer},
	Run:      run,
}

func run(pass *analysis.Pass) (interface{}, error) {

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

// This file contains tests for the appends checker.

package appends

func AppendsTest() {
	sli := []string{"a", "b", "c"}
	sli = append(sli) // ERROR "append with no values"

type Recv <-chan int

type sliceOf[E any] interface {
	~[]E
}

func _Append[S sliceOf[T], T any](s S, t ...T) S {
	return append(s, t...)
}

func main() {
	recv := make(Recv)
	a := _Append([]Recv{recv}, recv)
	if len(a) != 2 || a[0] != recv || a[1] != recv {
		panic(a)
	}

	recv2 := make(chan<- int)
	a2 := _Append([]chan<- int{recv2}, recv2)
	if len(a2) != 2 || a2[0] != recv2 || a2[1] != recv2 {
		panic(a)

	{"byte c", append([]byte{}, 0, 1, 2, 3), []byte{0, 1, 2, 3}},

	{"byte d", append([]byte{0, 1, 2}), []byte{0, 1, 2}},
	{"byte e", append([]byte{0, 1, 2}, 3), []byte{0, 1, 2, 3}},
	{"byte f", append([]byte{0, 1, 2}, 3, 4, 5), []byte{0, 1, 2, 3, 4, 5}},

	{"byte g", append([]byte{}, []byte{0}...), []byte{0}},
	{"byte h", append([]byte{}, []byte{0, 1, 2, 3}...), []byte{0, 1, 2, 3}},

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package ioutil

import (
	"io"
	"os"

	"github.com/minio/minio/internal/lock"
)

// AppendFile - appends the file "src" to the file "dst"
func AppendFile(dst string, src string, osync bool) error {
	appendFile, err := lock.Open(dst, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0o666)
	if err != nil {
		return err
	}