FA-11612 / Compression format semantics / Member archive
Bit reservoir loses codes that cross byte boundaries · case 02
Bit reservoir loses codes that cross byte boundaries.
Case contract
Pack nonnegative values less than 2**width consecutively least-significant-bit first, yielding integer bytes with zero high padding. Width is 1..8.
Why this case matters
A small offline codec model isolates a compression-specific failure without external files or libraries.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| cross byte | [2, 2, 2] | [146, 0] | Failed |
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