*u2.User = *u.User
	}
	return u2
}

// cloneMultipartForm should be an internal detail,
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/searKing/golang
//
// Do not remove or change the type signature.
// See go.dev/issue/67401.
//
//go:linkname cloneMultipartForm
func cloneMultipartForm(f *multipart.Form) *multipart.Form {
	if f == nil {

		s2 := make([]string, len(s))
		copy(s2, s)
		r2.TransferEncoding = s2
	}
	r2.Form = cloneURLValues(r.Form)
	r2.PostForm = cloneURLValues(r.PostForm)
	r2.MultipartForm = cloneMultipartForm(r.MultipartForm)

	// Copy matches and otherValues. See issue 61410.
	if s := r.matches; s != nil {
		s2 := make([]string, len(s))
		copy(s2, s)
		r2.matches = s2
	}