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SyncExpanseStrMap: sub-maps drained by optimistic removes under a BranchU are never freed

Status: Open.

#1182 In orieg/expanse;

· orieg opened on Sep 25, 2026

design(sync): concurrent count / rank / select — bound the pop0 fold, serve counts without quiescing, string-map counts

Status: Open.

#1144 In orieg/expanse;

· orieg opened on Sep 24, 2026

feat(sync-strmap): validated ordered reads and a batch cursor on StrReader

Status: Open.

#1143 In orieg/expanse;

· orieg opened on Sep 24, 2026

feat(sync): a validated batch cursor, with bounds, on the concurrent map readers

Status: Open.

#1142 In orieg/expanse;

· orieg opened on Sep 24, 2026

docs(sync): state the reclamation contract for u64 values used as locators into a caller's epoch-reclaimed store

Status: Open.

#1141 In orieg/expanse;

· orieg opened on Sep 24, 2026

packed-suffix: 8-byte size classes for suffix leaves

Status: Open.

#1109 In orieg/expanse;

· orieg opened on Sep 23, 2026

shrink_to_fit returns little RSS: released slab pages stay in glibc free chunks

Status: Open.

#1108 In orieg/expanse;

· orieg opened on Sep 23, 2026

Structurally shared (persistent) snapshots: option C design record (deferred)

Status: Open.

#1103 In orieg/expanse;

· orieg opened on Sep 23, 2026

perf(strmap): prefix scan is slower than three radix-trie twins in every patricia_comparison cell

Status: Open.

#1096 In orieg/expanse;

· orieg opened on Sep 23, 2026

Sync* wrappers: two UB classes reachable from safe code (optimistic-read data race, and &T/&mut aliasing over the engine), present since v0.6.0

bugSomething isn't workingSomething isn't working

concurrencyOCC, thread safety, lock-free structures, LoomOCC, thread safety, lock-free structures, Loom

Status: Open.

#1086 In orieg/expanse;

· orieg opened on Sep 22, 2026

sync: optimistic removals leave a BranchU below BRANCHB_UP, and validate() rejects the tree

bugSomething isn't workingSomething isn't working

concurrencyOCC, thread safety, lock-free structures, LoomOCC, thread safety, lock-free structures, Loom

Status: Open.

#1079 In orieg/expanse;

· orieg opened on Sep 22, 2026

test_sync_map_linearizability_zipfian: 16 bytes still accounted for in clear(), once on macOS

bugSomething isn't workingSomething isn't working

concurrencyOCC, thread safety, lock-free structures, LoomOCC, thread safety, lock-free structures, Loom

testingTesting, differential fuzzing, Miri, and verificationTesting, differential fuzzing, Miri, and verification

Status: Open.

#1044 In orieg/expanse;

· orieg opened on Sep 20, 2026