func lockextra(nilokay bool) *m {
	const locked = 1

	incr := false
	for {
		old := extraM.Load()
		if old == locked {
			osyield_no_g()
			continue
		}
		if old == 0 && !nilokay {
			if !incr {
				// Add 1 to the number of threads
				// waiting for an M.
				// This is cleared by newextram.
				extraMWaiters.Add(1)
				incr = true
			}
			usleep_no_g(1)
			continue
		}

// inc : 2018-03-10 Intercap Registry Inc.
inc

// industries : 2013-12-05 Binky Moon, LLC
industries

// infiniti : 2014-03-27 NISSAN MOTOR CO., LTD.
infiniti

// ing : 2014-01-23 Charleston Road Registry Inc.
ing

// ink : 2013-12-05 Top Level Design, LLC
ink

// institute : 2013-11-07 Binky Moon, LLC
institute

// insurance : 2015-02-19 fTLD Registry Services LLC
insurance

	}
}

func TestMakeFuncInterface(t *testing.T) {
	fn := func(i int) int { return i }
	incr := func(in []Value) []Value {
		return []Value{ValueOf(int(in[0].Int() + 1))}
	}
	fv := MakeFunc(TypeOf(fn), incr)
	ValueOf(&fn).Elem().Set(fv)
	if r := fn(2); r != 3 {
		t.Errorf("Call returned %d, want 3", r)
	}

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