all: replace package ioutil with os and io in src

For #45557

Change-Id: I56824135d86452603dd4ed4bab0e24c201bb0683
Reviewed-on: https://go-review.googlesource.com/c/go/+/426257
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Andy Pan <panjf2000@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/cmd/internal/obj/objfile_test.go b/src/cmd/internal/obj/objfile_test.go
index 91e96e435d..79204c1858 100644
--- a/src/cmd/internal/obj/objfile_test.go
+++ b/src/cmd/internal/obj/objfile_test.go
@@ -6,15 +6,15 @@ package obj
 
 import (
 	"bytes"
-	"cmd/internal/goobj"
-	"cmd/internal/sys"
 	"internal/testenv"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"testing"
 	"unsafe"
+
+	"cmd/internal/goobj"
+	"cmd/internal/sys"
 )
 
 var dummyArch = LinkArch{Arch: sys.ArchAMD64}
@@ -99,14 +99,14 @@ func TestSymbolTooLarge(t *testing.T) { // Issue 42054
 		t.Skip("skip on 32-bit architectures")
 	}
 
-	tmpdir, err := ioutil.TempDir("", "TestSymbolTooLarge")
+	tmpdir, err := os.MkdirTemp("", "TestSymbolTooLarge")
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer os.RemoveAll(tmpdir)
 
 	src := filepath.Join(tmpdir, "p.go")
-	err = ioutil.WriteFile(src, []byte("package p; var x [1<<32]byte"), 0666)
+	err = os.WriteFile(src, []byte("package p; var x [1<<32]byte"), 0666)
 	if err != nil {
 		t.Fatalf("failed to write source file: %v\n", err)
 	}
@@ -129,7 +129,7 @@ func TestNoRefName(t *testing.T) {
 	tmpdir := t.TempDir()
 
 	src := filepath.Join(tmpdir, "x.go")
-	err := ioutil.WriteFile(src, []byte("package main; import \"fmt\"; func main() { fmt.Println(123) }\n"), 0666)
+	err := os.WriteFile(src, []byte("package main; import \"fmt\"; func main() { fmt.Println(123) }\n"), 0666)
 	if err != nil {
 		t.Fatalf("failed to write source file: %v\n", err)
 	}