all: gofmt -w -r 'interface{} -> any' src

And then revert the bootstrap cmd directories and certain testdata.
And adjust tests as needed.

Not reverting the changes in std that are bootstrapped,
because some of those changes would appear in API docs,
and we want to use any consistently.
Instead, rewrite 'any' to 'interface{}' in cmd/dist for those directories
when preparing the bootstrap copy.

A few files changed as a result of running gofmt -w
not because of interface{} -> any but because they
hadn't been updated for the new //go:build lines.

Fixes #49884.

Change-Id: Ie8045cba995f65bd79c694ec77a1b3d1fe01bb09
Reviewed-on: https://go-review.googlesource.com/c/go/+/368254
Trust: Russ Cox <[email protected]>
Run-TryBot: Russ Cox <[email protected]>
Reviewed-by: Robert Griesemer <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>

Author: rsc

src/archive/tar/common.go

@@ -538,7 +538,7 @@ type headerFileInfo struct {
 func (fi headerFileInfo) Size() int64        { return fi.h.Size }
 func (fi headerFileInfo) IsDir() bool        { return fi.Mode().IsDir() }
 func (fi headerFileInfo) ModTime() time.Time { return fi.h.ModTime }
-func (fi headerFileInfo) Sys() interface{}   { return fi.h }
+func (fi headerFileInfo) Sys() any           { return fi.h }
 
 // Name returns the base name of the file.
 func (fi headerFileInfo) Name() string {

src/archive/tar/reader_test.go

@@ -1363,7 +1363,7 @@ func TestFileReader(t *testing.T) {
 			wantLCnt int64
 			wantPCnt int64
 		}
-		testFnc interface{} // testRead | testWriteTo | testRemaining
+		testFnc any // testRead | testWriteTo | testRemaining
 	)
 
 	type (
@@ -1376,7 +1376,7 @@ func TestFileReader(t *testing.T) {
 			spd     sparseDatas
 			size    int64
 		}
-		fileMaker interface{} // makeReg | makeSparse
+		fileMaker any // makeReg | makeSparse
 	)
 
 	vectors := []struct {

src/archive/tar/tar_test.go

@@ -23,7 +23,7 @@ import (
 
 type testError struct{ error }
 
-type fileOps []interface{} // []T where T is (string | int64)
+type fileOps []any // []T where T is (string | int64)
 
 // testFile is an io.ReadWriteSeeker where the IO operations performed
 // on it must match the list of operations in ops.

src/archive/tar/writer_test.go

@@ -67,7 +67,7 @@ func TestWriter(t *testing.T) {
 		testClose struct { // Close() == wantErr
 			wantErr error
 		}
-		testFnc interface{} // testHeader | testWrite | testReadFrom | testClose
+		testFnc any // testHeader | testWrite | testReadFrom | testClose
 	)
 
 	vectors := []struct {
@@ -1031,7 +1031,7 @@ func TestFileWriter(t *testing.T) {
 			wantLCnt int64
 			wantPCnt int64
 		}
-		testFnc interface{} // testWrite | testReadFrom | testRemaining
+		testFnc any // testWrite | testReadFrom | testRemaining
 	)
 
 	type (
@@ -1044,7 +1044,7 @@ func TestFileWriter(t *testing.T) {
 			sph     sparseHoles
 			size    int64
 		}
-		fileMaker interface{} // makeReg | makeSparse
+		fileMaker any // makeReg | makeSparse
 	)
 
 	vectors := []struct {

src/archive/zip/reader.go

@@ -670,7 +670,7 @@ func (f *fileListEntry) Size() int64       { return 0 }
 func (f *fileListEntry) Mode() fs.FileMode { return fs.ModeDir | 0555 }
 func (f *fileListEntry) Type() fs.FileMode { return fs.ModeDir }
 func (f *fileListEntry) IsDir() bool       { return true }
-func (f *fileListEntry) Sys() interface{}  { return nil }
+func (f *fileListEntry) Sys() any          { return nil }
 
 func (f *fileListEntry) ModTime() time.Time {
 	if f.file == nil {

src/archive/zip/struct.go

@@ -163,7 +163,7 @@ func (fi headerFileInfo) ModTime() time.Time {
 }
 func (fi headerFileInfo) Mode() fs.FileMode { return fi.fh.Mode() }
 func (fi headerFileInfo) Type() fs.FileMode { return fi.fh.Mode().Type() }
-func (fi headerFileInfo) Sys() interface{}  { return fi.fh }
+func (fi headerFileInfo) Sys() any          { return fi.fh }
 
 func (fi headerFileInfo) Info() (fs.FileInfo, error) { return fi, nil }
 

src/builtin/builtin.go

@@ -239,7 +239,7 @@ func close(c chan<- Type)
 // that point, the program is terminated with a non-zero exit code. This
 // termination sequence is called panicking and can be controlled by the
 // built-in function recover.
-func panic(v interface{})
+func panic(v any)
 
 // The recover built-in function allows a program to manage behavior of a
 // panicking goroutine. Executing a call to recover inside a deferred
@@ -250,7 +250,7 @@ func panic(v interface{})
 // panicking, or if the argument supplied to panic was nil, recover returns
 // nil. Thus the return value from recover reports whether the goroutine is
 // panicking.
-func recover() interface{}
+func recover() any
 
 // The print built-in function formats its arguments in an
 // implementation-specific way and writes the result to standard error.

src/bytes/reader_test.go

@@ -76,7 +76,7 @@ func TestReaderAt(t *testing.T) {
 		off     int64
 		n       int
 		want    string
-		wanterr interface{}
+		wanterr any
 	}{
 		{0, 10, "0123456789", nil},
 		{1, 10, "123456789", io.EOF},

src/cmd/api/goapi.go

@@ -1071,7 +1071,7 @@ func (w *Walker) emitMethod(m *types.Selection) {
 	w.emitf("method (%s%s) %s%s", w.typeString(recv), tps, m.Obj().Name(), w.signatureString(sig))
 }
 
-func (w *Walker) emitf(format string, args ...interface{}) {
+func (w *Walker) emitf(format string, args ...any) {
 	f := strings.Join(w.scope, ", ") + ", " + fmt.Sprintf(format, args...)
 	if strings.Contains(f, "\n") {
 		panic("feature contains newlines: " + f)

src/cmd/api/testdata/src/issue21181/p/p_generic.go

@@ -1,3 +1,4 @@
+//go:build !amd64
 // +build !amd64
 
 package p