iter it.3 BLOCKED: surfaced fundamental milestone-design fork (bounce-back)

it.3 Task 1 (non-destructive oracle + spec-delegated class-(b) sweep) ran complete; zero production code changed. The mandated sweep surfaced that 6 corpus fixtures contain build(d:Int)=if d==0 then Leaf else Node(1,build(d-1),build(d-1)) — a terminating, maximally-LLM-natural, non-structural non-tail BRANCHING recursion the milestone's totality dichotomy makes inexpressible (not ADT-structural; not recur-able — branching is not a single tail back-edge). The milestone as-specified would fail its own feature-acceptance criterion. Orchestrator correctly bounced rather than patch a 4th time (spec_over_plan_patches). Records the blocked attempt + the reusable bench/it3-oracle/ (40-fixture behavioural oracle, valid for the post-decision re-dispatch). main forward-only; nothing reverted. Resolution (it.2b + a user purity-pillar decision) tracked in the roadmap.
2026-05-15 16:06:42 +02:00
parent c992eb93df
commit 305ffd1367
44 changed files with 2346 additions and 0 deletions
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+stem	class	migration	runnable	rec_fns	note
+bench_closure_chain	a	loop	main	run_loop:loop	
+bench_compute_collatz	a	loop	main	collatz_steps:loop,sum_steps_loop:loop	
+bench_compute_intsum	a	loop	main	intsum_loop:loop	
+bench_hof_pipeline	a	plaincall	main	build_n:structural,fold_with_fn:structural	
+bench_latency_explicit	a	BLOCKED	main	build_tree:BLOCKED,cons_n_acc:structural,sum_list_acc:structural,loop:structural	BLOCKED:build_tree
+bench_latency_implicit	a	BLOCKED	main	build_tree:BLOCKED,sum_tree:structural,cons_n_acc:structural,sum_list_acc:structural,loop:structural	BLOCKED:build_tree
+bench_list_sum	a	plaincall	main	cons_n_acc:structural,sum_acc:structural	
+bench_list_sum_explicit	a	plaincall	main	cons_n_acc:structural,sum_acc:structural	
+bench_mono_dispatch	a	plaincall-or-loop	?	(self-rec via loop/letrec only)	
+bench_tree_walk	b	BLOCKED	main	build_tree:BLOCKED,sum_tree:structural	BLOCKED:build_tree
+borrow_own_demo	c	already-structural	main	list_length:structural,sum_list:structural	
+ct_1_ordering_signum	a	plaincall	main	drain:structural	
+escape_local_demo	b	loop	main	count:loop	
+fieldtest/floats_1_newton_sqrt	a	loop	main	newton_iter:loop	
+fieldtest/floats_2_average_int_list	a	plaincall	main	sum_acc:structural,count_acc:structural	
+fieldtest/forma_1_factorial	a	loop	main	fact_acc:loop	
+gc_stress	b	loop+structural	main	build:loop,sum_list:structural	
+list	c	already-structural	main	sum_list:structural	
+list_map	c	already-structural	main	map_int:structural,print_list:structural	
+list_map_poly	a	plaincall	main	map:structural,print_list:structural	
+mut_counter	a	loop	main	sum_helper:loop	
+mut_sum_floats	a	loop	main	sum_helper:loop	
+pat_extract_partial_drop	c	already-structural	main	sum_list:structural	
+rc_drop_iterative_long_list	a	plaincall	main	cons_n_acc:structural	
+rc_let_alias_implicit_param	a	BLOCKED	main	build:BLOCKED,loop:structural	BLOCKED:build
+rc_let_owned_app_leak	b	BLOCKED	main	build:BLOCKED	BLOCKED:build
+rc_list_drop	c	already-structural	main	sum_list:structural	
+rc_pin_recurse_implicit	a	BLOCKED	main	build:BLOCKED,loop:structural	BLOCKED:build
+rc_tail_sum_explicit_leak	a	plaincall	main	cons_n_acc:structural,sum_acc:structural	
+reuse_as_demo	c	already-structural	main	map_inc:structural,sum_list:structural	
+sort	a	plaincall	main	insert:structural,sort:structural,print_list:structural	
+std_either_list	c	already-structural	checkonly	lefts:structural,rights:structural,partition_eithers:structural	
+std_list	a	plaincall	checkonly	fold_left:structural,fold_right:structural,append:structural,map:structural,filter:structural,take:structural,drop:structural	
+std_list_stress	b	loop	main	build:loop	
+struct_rec_foldl_sum	c	already-structural	checkonly	go:structural	
+struct_rec_list_len	c	already-structural	checkonly	len:structural	
+struct_rec_sum_e2e	c	already-structural	main	sum:structural	
+struct_rec_tree_forest	c	already-structural	checkonly	forest_size:structural	
+sum	b	loop	main	sum:loop	
+test_mono_recursive_fn_bug	a	loop	main	loop:loop	
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+{
+  "iter_id": "it.3",
+  "date": "2026-05-15",
+  "mode": "standard",
+  "outcome": "BLOCKED",
+  "tasks_total": 7,
+  "tasks_completed": 1,
+  "reloops_per_task": { "1": 0 },
+  "review_loops_spec": 0,
+  "review_loops_quality": 0,
+  "blocked_reason": "spec-ambiguous",
+  "blocked_detail": {
+    "task": 1,
+    "boundary": "Task-1.3 spec-delegated sweep -> Task-2 migration",
+    "signal": "6 corpus fixtures contain a recursive fn that is neither structural recursion (no ADT param) nor expressible as (loop)/recur (double non-tail recursion building a binary Tree on an Int depth counter); fires NonStructuralRecursion once Task 4 removes the no-ADT-candidate skip; DD-3 forbids softening Task 4 or restoring the exemption; carrier forbids reshaping the LLM-natural fixture",
+    "fixtures": [
+      "examples/bench_tree_walk.ail::build_tree",
+      "examples/bench_latency_explicit.ail::build_tree",
+      "examples/bench_latency_implicit.ail::build_tree",
+      "examples/rc_let_owned_app_leak.ail::build",
+      "examples/rc_pin_recurse_implicit.ail::build",
+      "examples/rc_let_alias_implicit_param.ail::build"
+    ]
+  },
+  "task1_enumeration": {
+    "fixtures_classified": 40,
+    "oracles_captured": 40,
+    "class_a_tail_app_files": 23,
+    "no_adt_loop_migratable_fns": 13,
+    "no_adt_blocked_tree_recursion_fns": 6,
+    "structural_no_migration_fixtures": 22
+  },
+  "rc_rss_gate_reached": false,
+  "task_5b_needed": null,
+  "production_code_modified": false,
+  "working_tree_artifacts": ["bench/it3-oracle/MANIFEST.tsv", "bench/it3-oracle/*.out (40)"]
+}