all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp

As part of #42026, these helpers from io/ioutil were moved to os.
(ioutil.TempFile and TempDir became os.CreateTemp and MkdirTemp.)

Update the Go tree to use the preferred names.

As usual, code compiled with the Go 1.4 bootstrap toolchain
and code vendored from other sources is excluded.

ReadDir changes are in a separate CL, because they are not a
simple search and replace.

For #42026.

Change-Id: If318df0216d57e95ea0c4093b89f65e5b0ababb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/266365
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/cmd/go/internal/modload/init.go b/src/cmd/go/internal/modload/init.go
index 1c31a5f90a..6a2cea668d 100644
--- a/src/cmd/go/internal/modload/init.go
+++ b/src/cmd/go/internal/modload/init.go
@@ -632,7 +632,7 @@ func setDefaultBuildMod() {
 func convertLegacyConfig(modPath string) (from string, err error) {
 	for _, name := range altConfigs {
 		cfg := filepath.Join(modRoot, name)
-		data, err := ioutil.ReadFile(cfg)
+		data, err := os.ReadFile(cfg)
 		if err == nil {
 			convert := modconv.Converters[name]
 			if convert == nil {
@@ -753,7 +753,7 @@ func findModulePath(dir string) (string, error) {
 	}
 
 	// Look for Godeps.json declaring import path.
-	data, _ := ioutil.ReadFile(filepath.Join(dir, "Godeps/Godeps.json"))
+	data, _ := os.ReadFile(filepath.Join(dir, "Godeps/Godeps.json"))
 	var cfg1 struct{ ImportPath string }
 	json.Unmarshal(data, &cfg1)
 	if cfg1.ImportPath != "" {
@@ -761,7 +761,7 @@ func findModulePath(dir string) (string, error) {
 	}
 
 	// Look for vendor.json declaring import path.
-	data, _ = ioutil.ReadFile(filepath.Join(dir, "vendor/vendor.json"))
+	data, _ = os.ReadFile(filepath.Join(dir, "vendor/vendor.json"))
 	var cfg2 struct{ RootPath string }
 	json.Unmarshal(data, &cfg2)
 	if cfg2.RootPath != "" {
@@ -813,7 +813,7 @@ var (
 )
 
 func findImportComment(file string) string {
-	data, err := ioutil.ReadFile(file)
+	data, err := os.ReadFile(file)
 	if err != nil {
 		return ""
 	}