libgo: update to Go1.18beta2

gotools/
	* Makefile.am (go_cmd_cgo_files): Add ast_go118.go
	(check-go-tool): Copy golang.org/x/tools directories.
	* Makefile.in: Regenerate.

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695

1 files changed, 8 insertions, 8 deletions

diff --git a/libgo/go/net/http/response_test.go b/libgo/go/net/http/response_test.go
index 8eef654..5a735b0 100644
--- a/libgo/go/net/http/response_test.go
+++ b/libgo/go/net/http/response_test.go
@@ -646,8 +646,8 @@ type readerAndCloser struct {
 func TestReadResponseCloseInMiddle(t *testing.T) {
 	t.Parallel()
 	for _, test := range readResponseCloseInMiddleTests {
-		fatalf := func(format string, args ...interface{}) {
-			args = append([]interface{}{test.chunked, test.compressed}, args...)
+		fatalf := func(format string, args ...any) {
+			args = append([]any{test.chunked, test.compressed}, args...)
 			t.Fatalf("on test chunked=%v, compressed=%v: "+format, args...)
 		}
 		checkErr := func(err error, msg string) {
@@ -732,7 +732,7 @@ func TestReadResponseCloseInMiddle(t *testing.T) {
 	}
 }
 
-func diff(t *testing.T, prefix string, have, want interface{}) {
+func diff(t *testing.T, prefix string, have, want any) {
 	t.Helper()
 	hv := reflect.ValueOf(have).Elem()
 	wv := reflect.ValueOf(want).Elem()
@@ -849,10 +849,10 @@ func TestReadResponseErrors(t *testing.T) {
 	type testCase struct {
 		name    string // optional, defaults to in
 		in      string
-		wantErr interface{} // nil, err value, or string substring
+		wantErr any // nil, err value, or string substring
 	}
 
-	status := func(s string, wantErr interface{}) testCase {
+	status := func(s string, wantErr any) testCase {
 		if wantErr == true {
 			wantErr = "malformed HTTP status code"
 		}
@@ -863,7 +863,7 @@ func TestReadResponseErrors(t *testing.T) {
 		}
 	}
 
-	version := func(s string, wantErr interface{}) testCase {
+	version := func(s string, wantErr any) testCase {
 		if wantErr == true {
 			wantErr = "malformed HTTP version"
 		}
@@ -874,7 +874,7 @@ func TestReadResponseErrors(t *testing.T) {
 		}
 	}
 
-	contentLength := func(status, body string, wantErr interface{}) testCase {
+	contentLength := func(status, body string, wantErr any) testCase {
 		return testCase{
 			name:    fmt.Sprintf("status %q %q", status, body),
 			in:      fmt.Sprintf("HTTP/1.1 %s\r\n%s", status, body),
@@ -947,7 +947,7 @@ func TestReadResponseErrors(t *testing.T) {
 
 // wantErr can be nil, an error value to match exactly, or type string to
 // match a substring.
-func matchErr(err error, wantErr interface{}) error {
+func matchErr(err error, wantErr any) error {
 	if err == nil {
 		if wantErr == nil {
 			return nil