map: assumed length for prefix
map: assumed length for prefix

Former-commit-id: efbcdae7352ea59e5e02b77f4307a8830ef7c107 [formerly 102920cc0108cb5090344dcf803406a48cd9de22]
Former-commit-id: 8b1b9674e68bca916836a2eced6517ced89dd1c8 [formerly 80a320e4abf690d7c6a1fed8b134c48b77763850]
Former-commit-id: fb7a2949efa687325621634add5ba77a95bdff3d
simomarsili/elss