all: update references to symbols moved from io/ioutil to io

doc/articles/wiki/wiki_test.go

@@ -7,6 +7,7 @@ package main_test
 import (
 	"bytes"
 	"fmt"
+	"io"
 	"io/ioutil"
 	"net/http"
 	"os"
@@ -141,7 +142,7 @@ func responseMustMatchFile(t *testing.T, r *http.Response, filename string) {
 	t.Helper()
 
 	defer r.Body.Close()
-	body, err := ioutil.ReadAll(r.Body)
+	body, err := io.ReadAll(r.Body)
 	if err != nil {
 		t.Fatal(err)
 	}

misc/android/go_android_exec.go

@@ -276,7 +276,7 @@ func adbCopyGoroot() error {
 	if err := syscall.Flock(int(stat.Fd()), syscall.LOCK_EX); err != nil {
 		return err
 	}
-	s, err := ioutil.ReadAll(stat)
+	s, err := io.ReadAll(stat)
 	if err != nil {
 		return err
 	}

misc/cgo/testcarchive/testdata/libgo6/sigprof.go

@@ -5,15 +5,15 @@
 package main
 
 import (
-	"io/ioutil"
+	"io"
 	"runtime/pprof"
 )
 
 import "C"
 
 //export go_start_profile
 func go_start_profile() {
-	pprof.StartCPUProfile(ioutil.Discard)
+	pprof.StartCPUProfile(io.Discard)
 }
 
 //export go_stop_profile

misc/cgo/testsanitizers/testdata/tsan9.go

@@ -44,7 +44,7 @@ void spin() {
 import "C"
 
 import (
-	"io/ioutil"
+	"io"
 	"runtime/pprof"
 	"time"
 )
@@ -60,7 +60,7 @@ func goSpin() {
 }
 
 func main() {
-	pprof.StartCPUProfile(ioutil.Discard)
+	pprof.StartCPUProfile(io.Discard)
 	go C.spin()
 	goSpin()
 	pprof.StopCPUProfile()

misc/linkcheck/linkcheck.go

@@ -11,7 +11,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"net/http"
 	"os"
@@ -144,7 +144,7 @@ func doCrawl(url string) error {
 	if res.StatusCode != 200 {
 		return errors.New(res.Status)
 	}
-	slurp, err := ioutil.ReadAll(res.Body)
+	slurp, err := io.ReadAll(res.Body)
 	res.Body.Close()
 	if err != nil {
 		log.Fatalf("Error reading %s body: %v", url, err)

src/net/http/fs_test.go

@@ -593,7 +593,7 @@ func TestServeIndexHtml(t *testing.T) {
 				if err != nil {
 					t.Fatal(err)
 				}
-				b, err := ioutil.ReadAll(res.Body)
+				b, err := io.ReadAll(res.Body)
 				if err != nil {
 					t.Fatal("reading Body:", err)
 				}

src/testing/fstest/testfs.go

@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"io"
 	"io/fs"
-	"io/ioutil"
 	"path"
 	"reflect"
 	"sort"
@@ -460,7 +459,7 @@ func (t *fsTester) checkFile(file string) {
 		return
 	}
 
-	data, err := ioutil.ReadAll(f)
+	data, err := io.ReadAll(f)
 	if err != nil {
 		f.Close()
 		t.errorf("%s: Open+ReadAll: %v", file, err)

test/bench/go1/gob_test.go

@@ -10,7 +10,7 @@ import (
 	"bytes"
 	"encoding/gob"
 	"encoding/json"
-	"io/ioutil"
+	"io"
 	"log"
 	"reflect"
 	"testing"
@@ -73,7 +73,7 @@ func gobdec() {
 }
 
 func gobenc() {
-	if err := gob.NewEncoder(ioutil.Discard).Encode(&gobdata); err != nil {
+	if err := gob.NewEncoder(io.Discard).Encode(&gobdata); err != nil {
 		panic(err)
 	}
 }

test/bench/go1/gzip_test.go

@@ -10,7 +10,6 @@ import (
 	"bytes"
 	gz "compress/gzip"
 	"io"
-	"io/ioutil"
 	"testing"
 )
 
@@ -28,7 +27,7 @@ func init() {
 }
 
 func gzip() {
-	c := gz.NewWriter(ioutil.Discard)
+	c := gz.NewWriter(io.Discard)
 	if _, err := c.Write(jsongunz); err != nil {
 		panic(err)
 	}
@@ -42,7 +41,7 @@ func gunzip() {
 	if err != nil {
 		panic(err)
 	}
-	if _, err := io.Copy(ioutil.Discard, r); err != nil {
+	if _, err := io.Copy(io.Discard, r); err != nil {
 		panic(err)
 	}
 	r.Close()

test/bench/go1/http_test.go

@@ -6,7 +6,7 @@ package go1
 
 import (
 	"bytes"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -34,7 +34,7 @@ func BenchmarkHTTPClientServer(b *testing.B) {
 		if err != nil {
 			b.Fatal("Get:", err)
 		}
-		all, err := ioutil.ReadAll(res.Body)
+		all, err := io.ReadAll(res.Body)
 		if err != nil {
 			b.Fatal("ReadAll:", err)
 		}

test/bench/go1/json_test.go

@@ -12,7 +12,6 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"io"
-	"io/ioutil"
 	"testing"
 )
 
@@ -26,7 +25,7 @@ func makeJsonBytes() []byte {
 	r = bytes.NewReader(bytes.Replace(jsonbz2_base64, []byte{'\n'}, nil, -1))
 	r = base64.NewDecoder(base64.StdEncoding, r)
 	r = bzip2.NewReader(r)
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		panic(err)
 	}

test/bench/go1/parser_test.go

@@ -12,7 +12,6 @@ import (
 	"go/parser"
 	"go/token"
 	"io"
-	"io/ioutil"
 	"strings"
 	"testing"
 )
@@ -26,7 +25,7 @@ func makeParserBytes() []byte {
 	r = strings.NewReader(parserbz2_base64)
 	r = base64.NewDecoder(base64.StdEncoding, r)
 	r = bzip2.NewReader(r)
-	b, err := ioutil.ReadAll(r)
+	b, err := io.ReadAll(r)
 	if err != nil {
 		panic(err)
 	}

test/bench/go1/revcomp_test.go

@@ -10,7 +10,7 @@ package go1
 import (
 	"bufio"
 	"bytes"
-	"io/ioutil"
+	"io"
 	"testing"
 )
 
@@ -35,7 +35,7 @@ var revCompTable = [256]uint8{
 
 func revcomp(data []byte) {
 	in := bufio.NewReader(bytes.NewBuffer(data))
-	out := ioutil.Discard
+	out := io.Discard
 	buf := make([]byte, 1024*1024)
 	line, err := in.ReadSlice('\n')
 	for err == nil {

test/bench/go1/template_test.go

@@ -9,7 +9,7 @@ package go1
 
 import (
 	"bytes"
-	"io/ioutil"
+	"io"
 	"strings"
 	"testing"
 	"text/template"
@@ -63,7 +63,7 @@ func init() {
 }
 
 func tmplexec() {
-	if err := tmpl.Execute(ioutil.Discard, &jsondata); err != nil {
+	if err := tmpl.Execute(io.Discard, &jsondata); err != nil {
 		panic(err)
 	}
 }

test/stress/runstress.go

@@ -12,7 +12,6 @@ import (
 	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"log"
 	"math/rand"
 	"net"
@@ -70,7 +69,7 @@ func stressNet() {
 		if res.StatusCode != 200 {
 			log.Fatalf("stressNet: Status code = %d", res.StatusCode)
 		}
-		n, err := io.Copy(ioutil.Discard, res.Body)
+		n, err := io.Copy(io.Discard, res.Body)
 		if err != nil {
 			log.Fatalf("stressNet: io.Copy: %v", err)
 		}