const runtime.noCheck

4 uses

	runtime (current package)
		map.go#L106: 	noCheck = 1<<(8*sys.PtrSize) - 1
		map.go#L885: 				checkBucket = noCheck
		map.go#L889: 			checkBucket = noCheck
		map.go#L910: 		if checkBucket != noCheck && !h.sameSizeGrow() {