{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:FVHBBQGCXXJNBA4YLYGIG77PHL","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"182334b82277d27199dddcc55e349e31d989a692ef47ed0828ea71ad37468ac4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2018-12-12T11:37:02Z","title_canon_sha256":"3c307d12d9c83a913925554039b83e7b76e3968e1b6a5db9fe9994442822428a"},"schema_version":"1.0","source":{"id":"1812.04905","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.04905","created_at":"2026-05-17T23:47:43Z"},{"alias_kind":"arxiv_version","alias_value":"1812.04905v2","created_at":"2026-05-17T23:47:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.04905","created_at":"2026-05-17T23:47:43Z"},{"alias_kind":"pith_short_12","alias_value":"FVHBBQGCXXJN","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"FVHBBQGCXXJNBA4Y","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"FVHBBQGC","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:feefdae6a8ac77a6575b571bdcf9ac1a82e915485303e90afe8aea00b64ff1b6","target":"graph","created_at":"2026-05-17T23:47:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The OCaml language comes with a facility for interfacing with C code -- the Foreign Function Interface or FFI. The primitives for working with the OCaml runtime -- and, in particular, with the garbage collector (GC) -- strive for a minimal overhead: they avoid unnecessary work and allow for calls to C code to be very cheap. But they are also hard to use properly. Satisfying the GC invariants leads to counter-intuitive C code and there are hardly any safety checks to warn the developer. In this work, we explore two complementary approaches to mitigate these issues. First, simply adding an indir","authors_text":"Fr\\'ed\\'eric Bour","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2018-12-12T11:37:02Z","title":"CAMLroot: revisiting the OCaml FFI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.04905","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1430866958ceccdf772af24da71869988b9836c0b9c6a5b5f90eab8a5db756f6","target":"record","created_at":"2026-05-17T23:47:43Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"182334b82277d27199dddcc55e349e31d989a692ef47ed0828ea71ad37468ac4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.PL","submitted_at":"2018-12-12T11:37:02Z","title_canon_sha256":"3c307d12d9c83a913925554039b83e7b76e3968e1b6a5db9fe9994442822428a"},"schema_version":"1.0","source":{"id":"1812.04905","kind":"arxiv","version":2}},"canonical_sha256":"2d4e10c0c2bdd2d083985e0c837fef3ae789363051aa5c139e21df3c7a2ebf30","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d4e10c0c2bdd2d083985e0c837fef3ae789363051aa5c139e21df3c7a2ebf30","first_computed_at":"2026-05-17T23:47:43.994392Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:43.994392Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DaL9P8gdoe6XMEgGD0U4RemDVYNTqE9MYyv51cM/AJWJ/LN+mBr8N/g6G1Sd6L9v1Xb1pQWb25HKU5c/HGr8Ag==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:43.994986Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.04905","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1430866958ceccdf772af24da71869988b9836c0b9c6a5b5f90eab8a5db756f6","sha256:feefdae6a8ac77a6575b571bdcf9ac1a82e915485303e90afe8aea00b64ff1b6"],"state_sha256":"d179435d3cd56a5b070870e1aa9aabaa9a16dea3f3bd862e921acce5da5866ff"}