cs-linq-materialize-hot — measured, still hint
Status
hint. Wall-clock JSONL: cs-linq-materialize-hot.jsonl. Not corpus-triaged. The 2026-10-22 corpus verdict does not cover this slug.
Measurement
20000 iterations over one 32-int array. Before calls ToList each iteration; after calls it once. .NET 10.0.13, linux x64, load 0.04. The earlier .NET 8 pair was about 42×.
| role | case | median_ms | ops | ratio |
|---|---|---|---|---|
| after | tolist_once | 0.0158 | 20000 | 1 |
| before | tolist_each_iter | 0.6147 | 20000 | 38.905 |
The microbench shows a cost for this one shape. Default stays hint until the shape is corpus-triaged. This ratio is not a general speedup.
Unblock
Do not set the default to error from this file alone. A changing input, a cold path, or another ABI can erase the difference. Corpus triage is still required before any default change.