type response struct {
}

type myError struct {
}

func (myError) Error() string { return "" }

func doRequest(useSelect bool) (*response, error) {
	type async struct {
		resp *response
		err  error
	}
	ch := make(chan *async, 0)
	done := make(chan struct{}, 0)

	if useSelect {
		go func() {
			select {
			case ch <- &async{resp: nil, err: myError{}}:
			case <-done:
			}
		}()
	} else {

nHeight","width","minWidth","maxWidth","flex","flexShrink","flexGrow","flexBasis","tableLayout","captionSide","borderCollapse","borderSpacing","transformOrigin","translate","rotate","skew","scale","transform","animation","cursor","touchAction","userSelect","resize","scrollSnapType","scrollSnapAlign","scrollSnapStop","scrollMargin","scrollPadding","listStylePosition","listStyleType","listStyleImage","appearance","columns","breakBefore","breakInside","breakAfter","gridAutoColumns","gridAutoFlow","...

			}
			// trigger a gc
			runtime.GC()
			growflag = false
		}
	}
	if bitmask != 1<<16-1 {
		t.Error("missing key", bitmask)
	}
}

func testConcurrentReadsAfterGrowth(t *testing.T, useReflect bool) {
	t.Parallel()
	if runtime.GOMAXPROCS(-1) == 1 {
		defer runtime.GOMAXPROCS(runtime.GOMAXPROCS(16))
	}
	numLoop := 10
	numGrowStep := 250
	numReader := 16
	if testing.Short() {