<pre>
i := *p
if i &lt; 0 || i &gt;= len(funcs) {
	panic("invalid function index")
}
... complex code ...
// compiler must NOT reload i = *p here
funcs[i]()
</pre>

<p>
If the complex code needs many registers, a compiler for single-threaded programs
could discard <code>i</code> without saving a copy and then reload
<code>i = *p</code> just before
<code>funcs[i]()</code>.

pkg unicode, const Version = "6.2.0"
pkg unicode, const Version = "6.3.0"
pkg unicode, const Version = "7.0.0"
pkg unicode, const Version = "8.0.0"
pkg unicode, const Version = "9.0.0"
pkg html/template, method (*Template) Funcs(FuncMap) *Template
pkg html/template, type FuncMap map[string]interface{}
pkg syscall (freebsd-386), const SYS_FSTAT = 189
pkg syscall (freebsd-386), const SYS_FSTATAT = 493
pkg syscall (freebsd-386), const SYS_FSTATFS = 397

pkg go/types, method (*Var) Origin() *Var #51682
pkg hash/maphash, func Bytes(Seed, []uint8) uint64 #42710
pkg hash/maphash, func String(Seed, string) uint64 #42710
pkg html/template, method (*Template) Funcs(template.FuncMap) *Template #46121
pkg html/template, type FuncMap = template.FuncMap #46121
pkg net/http, method (*MaxBytesError) Error() string #30715
pkg net/http, type MaxBytesError struct #30715