old := make([]byte, buf.Len()+1)
		if n, err := f.ReadAt(old, 0); err == io.EOF && n == buf.Len() && bytes.Equal(buf.Bytes(), old) {
			return nil // No edit needed.
		}
	}
	// Remove existing contents, so that when we truncate to the actual size it will zero-fill,
	// and we will be able to detect (some) incomplete writes as files containing trailing NUL bytes.
	if err := f.Truncate(0); err != nil {
		return err
	}

	if e == nil && f.dirinfo.Load() != nil && r != 0 {
		e = syscall.EISDIR
	}
	if e != nil {
		return 0, f.wrapErr("seek", e)
	}
	return r, nil
}

// WriteString is like Write, but writes the contents of string s rather than
// a slice of bytes.
func (f *File) WriteString(s string) (n int, err error) {
	b := unsafe.Slice(unsafe.StringData(s), len(s))
	return f.Write(b)
}

//	  digest OCTET STRING
//	}
//
// For performance, we don't use the generic ASN1 encoder. Rather, we
// precompute a prefix of the digest value that makes a valid ASN1 DER string
// with the correct contents.
var hashPrefixes = map[crypto.Hash][]byte{
	crypto.MD5:       {0x30, 0x20, 0x30, 0x0c, 0x06, 0x08, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x05, 0x05, 0x00, 0x04, 0x10},

			return cmp.Compare(a.Suffix, b.Suffix)
		})
	}
}

// nameWithoutInst returns name if name has no brackets. If name contains
// brackets, then it returns name with all the contents between (and including)
// the outermost left and right bracket removed.
//
// Adapted from debug/gosym/symtab.go:Sym.nameWithoutInst.
func nameWithoutInst(name string) string {
	start := strings.Index(name, "[")

	}
	return l.symsByName[ver][name]
}

// Check that duplicate symbols have same contents.
func (l *Loader) checkdup(name string, r *oReader, li uint32, dup Sym) {
	p := r.Data(li)
	rdup, ldup := l.toLocal(dup)
	pdup := rdup.Data(ldup)
	reason := "same length but different contents"
	if len(p) != len(pdup) {
		reason = fmt.Sprintf("new length %d != old length %d", len(p), len(pdup))

	}
	r.setIndirect(indirect)
	f.Require = append(f.Require, r)
}

// SetRequire updates the requirements of f to contain exactly req, preserving
// the existing block structure and line comment contents (except for 'indirect'
// markings) for the first requirement on each named module path.
//
// The Syntax field is ignored for the requirements in req.
//

	}
	sort.Slice(sortedFiles, func(i, j int) bool { return sortedFiles[i].Name() < sortedFiles[j].Name() })
	return sortedFiles, nil
}

// OverlayPath returns the path to the overlaid contents of the
// file, the empty string if the overlay deletes the file, or path
// itself if the file is not in the overlay, the file is a directory
// in the overlay, or there is no overlay.

	{true, false},
	{true, true},
}

type readerAndCloser struct {
	io.Reader
	io.Closer
}

// TestReadResponseCloseInMiddle tests that closing a body after
// reading only part of its contents advances the read to the end of
// the request, right up until the next request.
func TestReadResponseCloseInMiddle(t *testing.T) {
	t.Parallel()
	for _, test := range readResponseCloseInMiddleTests {

	// "SCHILY.xattr." namespace.
	//
	// The following are semantically equivalent:
	//  h.Xattrs[key] = value
	//  h.PAXRecords["SCHILY.xattr."+key] = value
	//
	// When Writer.WriteHeader is called, the contents of Xattrs will take
	// precedence over those in PAXRecords.
	//
	// Deprecated: Use PAXRecords instead.
	Xattrs map[string]string

	// PAXRecords is a map of PAX extended header records.
	//

	UnreadRune() error
}

// StringWriter is the interface that wraps the WriteString method.
type StringWriter interface {
	WriteString(s string) (n int, err error)
}

// WriteString writes the contents of the string s to w, which accepts a slice of bytes.
// If w implements [StringWriter], [StringWriter.WriteString] is invoked directly.
// Otherwise, [Writer.Write] is called exactly once.