const runtime.noCheck

4 uses

	runtime (current package)
		map.go#L108: 	noCheck = 1<<(8*goarch.PtrSize) - 1
		map.go#L901: 				checkBucket = noCheck
		map.go#L905: 			checkBucket = noCheck
		map.go#L926: 		if checkBucket != noCheck && !h.sameSizeGrow() {