FA-47043 / Bounded deques / Member archive

Deque strided view reports span width instead of selected count · case 03

Deque strided view reports span width instead of selected count.

Member previewVariant 3 · 3 implementations · 6 checks per implementation

Case contract

Read an explicitly valid positive- or negative-stride bounded deque view. Preserve index order, capture an epoch, and report first/last source positions or null for an empty view.

Why this case matters

Controlled bounded deque implementation model with explicit storage and lifecycle observations.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
0	`[[3, 5, 7], [0, 2, 4], 5, 4, 0, 4]`	`[[3, 5, 7], [0, 2, 4], 3, 4, 0, 4]`	Failed

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