Joseph Ferano 6ebcea6d3a The writer's side gets the probe, the reader's side gets the scan ...

flan_dev_reg_dead was reaching for the containment scan, and it is on the free
path: a dev build would have paid a 4096-entry sweep per free. A free hands back
the base address the allocator gave out, which is what the slot is keyed on, so
the question there is equality and never containment. Only free-all needs the
scan, and that runs once a frame.

The table is allocated when it is armed, not declared. A fixed array was a
quarter of a megabyte of BSS in a shipped game for a table that build never
writes; now a release build carries a null pointer and the not-taken branch.

The pointer arm binds its subject to a slot before naming it three times — the
slice arm's rule, and its reason: an inspect with a path reaches a leaf through
a bounds check, and three of those to render one pointer is the walk paying for
its own shape.

dev-ptr.flan shows both halves on a stopped stack. It was read by hand; the
test_dev.ml case that would drive it is another lane's file, and NEXT.md says so.

2026-09-13 09:24:08 +07:00

..

assets

Assets are baked in at compile time, one file or one whole directory

2026-09-12 11:36:01 +07:00

pkgs

A package may not declare a macro, and says so

2026-09-12 21:02:33 +07:00

agent-longname.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

agent-queue.flan

Two of the four buffers with no evidence now have some

2026-09-12 10:47:41 +07:00

agent.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

algorithms.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

allocators.flan

Allocator is a builtin opaque type, so the arena needs nothing from milestone 5

2026-09-12 10:55:18 +07:00

array-ctor.flan

A let binding has no type slot, so (array 4 T) is how you say it

2026-09-12 21:48:08 +07:00

bounds-condition.flan

A bad index stops the program where it stands instead of taking the session with it

2026-09-13 08:02:22 +07:00

bounds.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

break.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

bytes2.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

cleanup.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

conditions.flan

The return type stops being a guess: the slot is mandatory, unit is ()

2026-09-12 23:18:28 +07:00

debug-permuted.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

debug.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

defer-let.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

destructure.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

dev-break-bounds.flan

The break loop meets a bad index, and the test says so rather than the reasoning

2026-09-13 08:11:57 +07:00

dev-break.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

dev-globals.flan

The globals a stopped stack reaches, in one section and not under a frame

2026-09-12 16:22:58 +07:00

dev-inspect.flan

Which frame the inspector answered from, asserted rather than reasoned about

2026-09-12 20:34:32 +07:00

dev-locals.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

dev-loop.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

dev-ptr.flan

The writer's side gets the probe, the reader's side gets the scan

2026-09-13 09:24:08 +07:00

dev-repl.flan

A stopped program, driven from Emacs

2026-09-11 19:39:29 +07:00

dev-watch.flan

The watch window pushes, because a poll cannot answer a stopped program

2026-09-12 23:16:44 +07:00

edn.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

embed.flan

Assets are baked in at compile time, one file or one whole directory

2026-09-12 11:36:01 +07:00

enum-compare.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

enum-convert.flan

An enum and an integer convert, both ways, when you say so

2026-09-12 09:11:34 +07:00

error.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

exhausted-unhandled.flan

(Vec T) over a type-erased runtime, with StorageExhausted going in beside it

2026-09-12 11:07:57 +07:00

exhausted.flan

The return type stops being a guess: the slot is mandatory, unit is ()

2026-09-12 23:18:28 +07:00

fn-capture.flan

A bare name is the function, and capture is the part that is not built

2026-09-12 22:44:33 +07:00

fn-extern.flan

A bare name is the function, and capture is the part that is not built

2026-09-12 22:44:33 +07:00

fn-in-struct.flan

A bare name is the function, and capture is the part that is not built

2026-09-12 22:44:33 +07:00

fn-no-type.flan

A bare name is the function, and capture is the part that is not built

2026-09-12 22:44:33 +07:00

fn-values.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

format.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

free-all-refused.flan

Say what the two one-line refusal programs are refusing, and why

2026-09-12 11:15:58 +07:00

handles.flan

Say what the spec now disagrees with, and that item 6 is closed

2026-09-13 08:07:44 +07:00

higher-order.flan

A bare name is the function, and capture is the part that is not built

2026-09-12 22:44:33 +07:00

loops.flan

Pin the latch to the continue path, and the clause barrier to its reason

2026-09-12 22:00:13 +07:00

machine.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

macro-cycle.flan

unless is not a special form any more

2026-09-12 20:59:12 +07:00

macro-spin.flan

unless is not a special form any more

2026-09-12 20:59:12 +07:00

macro-unless.flan

The return type stops being a guess: the slot is mandatory, unit is ()

2026-09-12 23:18:28 +07:00

macros.flan

unless is not a special form any more

2026-09-12 20:59:12 +07:00

map-exhausted.flan

The return type stops being a guess: the slot is mandatory, unit is ()

2026-09-12 23:18:28 +07:00

map-iter.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

map-stale-region.flan

The Map's tests join the suite, and the epoch trap covers its half

2026-09-12 16:09:27 +07:00

maps.flan

Cover a dev build and a map that leaves its let

2026-09-12 16:34:25 +07:00

math2.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

math.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

nth-gone.flan

Remove nth, the alias that was not one

2026-09-12 04:46:41 +07:00

pkg-alias-clash.flan

A ring of imports is refused by name, not swallowed

2026-09-12 16:46:30 +07:00

pkg-cycle.flan

A ring of imports is refused by name, not swallowed

2026-09-12 16:46:30 +07:00

pkg-diamond.flan

A ring of imports is refused by name, not swallowed

2026-09-12 16:46:30 +07:00

pkg-hidden-main.flan

sand is one program again

2026-09-11 20:11:01 +07:00

pkg-macro.flan

A package may not declare a macro, and says so

2026-09-12 21:02:33 +07:00

pkg-return.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

pkg-shadow.flan

A local shadowing an imported name, in an expression and in a place

2026-09-12 10:40:47 +07:00

pkg-shared.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

pkg-two-aliases.flan

sand is one program again

2026-09-11 20:11:01 +07:00

pkg-two-mains.flan

sand is one program again

2026-09-11 20:11:01 +07:00

pkg-unused.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

pool-stale-region.flan

Six refusals and a trap, each one a way of losing the property

2026-09-13 07:59:04 +07:00

printers.flan

Printers for every shape a value can have

2026-09-11 07:18:07 +07:00

println.flan

The return type stops being a guess: the slot is mandatory, unit is ()

2026-09-12 23:18:28 +07:00

raylib-audio.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

raylib-ffi.flan

The renderer was one binding away, and the import was not allowed to be the answer

2026-09-13 07:50:03 +07:00

raylib-font.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

raylib-image.flan

The renderer was one binding away, and the import was not allowed to be the answer

2026-09-13 07:50:03 +07:00

raylib-imported.flan

A table for the importer, against a header that does not move

2026-09-12 16:09:48 +07:00

reach-walk.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

registry.flan

Following a pointer was never a type question; it was a permission question

2026-09-13 09:17:47 +07:00

reload-v2.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

reload-v3.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

reload-v4.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

reload-v5.flan

Retyping a global across a reload, which nothing had ever done

2026-09-12 10:51:14 +07:00

reload.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

restarts.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

sand-headless.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

shadow-pkg.flan

A local shadowing an imported name, in an expression and in a place

2026-09-12 10:40:47 +07:00

signedness.flan

Retire the per-type printers, since print says all of it

2026-09-12 05:32:25 +07:00

slices.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

slurp-unhandled.flan

slurp reads a whole file, barf writes one, and failure is a condition

2026-09-12 11:38:24 +07:00

slurp.flan

slurp reads a whole file, barf writes one, and failure is a condition

2026-09-12 11:38:24 +07:00

stale-region.flan

(Vec T) over a type-erased runtime, with StorageExhausted going in beside it

2026-09-12 11:07:57 +07:00

string-of-bytes.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

strings.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

text.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

unions.flan

A union is a type name, and (vec-new) did not think so

2026-09-12 20:27:19 +07:00

unit-main.flan

The return type stops being a guess: the slot is mandatory, unit is ()

2026-09-12 23:18:28 +07:00

user-allocator.flan

Say what the two one-line refusal programs are refusing, and why

2026-09-12 11:15:58 +07:00

utf8.flan

Every defn in the tree states its return type, and Unit is written ()

2026-09-12 23:06:40 +07:00

values.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

vec-double-free.flan

(Vec T) over a type-erased runtime, with StorageExhausted going in beside it

2026-09-12 11:07:57 +07:00

vec-global.flan

Ownership is not transitive yet, so refuse the three shapes that assume it is

2026-09-12 11:12:49 +07:00

vec-in-struct.flan

Ownership is not transitive yet, so refuse the three shapes that assume it is

2026-09-12 11:12:49 +07:00

vec-moved-in-loop.flan

(Vec T) over a type-erased runtime, with StorageExhausted going in beside it

2026-09-12 11:07:57 +07:00

vec-moved.flan

(Vec T) over a type-erased runtime, with StorageExhausted going in beside it

2026-09-12 11:07:57 +07:00

vec-of-vec.flan

Ownership is not transitive yet, so refuse the three shapes that assume it is

2026-09-12 11:12:49 +07:00

vec-to-c.flan

Ownership is not transitive yet, so refuse the three shapes that assume it is

2026-09-12 11:12:49 +07:00

vec-untyped.flan

(Vec T) over a type-erased runtime, with StorageExhausted going in beside it

2026-09-12 11:07:57 +07:00

vec.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

virtual-controls-headless.flan

Sweep every field label from the colon spelling to the dot

2026-09-12 14:47:54 +07:00

web-files.flan

One source, two outcomes: barf is refused on the web and says so

2026-09-12 11:41:24 +07:00