const runtime.mask3

2 uses

	runtime (current package)
		utf8.go#L30: 	mask3 = 0x0F // 0000 1111
		utf8.go#L82: 			r = rune(s[0]&mask3)<<12 | rune(s[1]&maskx)<<6 | rune(s[2]&maskx)