Decision 9 ships. Through Iter 14e every ADT box, lambda env, and
closure pair was leaked. This iter substitutes GC_malloc for malloc
in all four IR allocation sites and links -lgc. No language change,
no AST change, no schema change.
Diff: 5 files modified, ~30 LOC net.
- codegen/lib.rs: 4 substitutions @malloc -> @GC_malloc.
- ail/main.rs: .arg("-lgc") in the clang invocation.
- 5 IR snapshot files: mechanical s/@malloc/@GC_malloc/, 9
occurrences. IR is bit-identical to pre-14f modulo this
substitution — exactly Decision 9's promise.
- e2e.rs: new test gc_handles_recursive_list_construction.
- examples/gc_stress.{ailx,ail.json}: new fixture, builds a 50-
element list via recursive Cons, sums it (1275).
Hash invariance verified: every existing fixture def hash
unchanged (codegen and link line are downstream of canonical
bytes; AST didn't move).
Tests 79 -> 80, all green. Existing 79 byte-identical stdout.
gc_stress -> 1275. list_map_poly -> 2/3/4 unchanged. sort
sorted-list unchanged. cargo doc 0 warnings.
GC notes (pertinent to future work):
- GC_INIT() not needed on Arch libgc 1.5.6 (auto-init via
__attribute__((constructor))).
- No conservative-scan over-retention observed.
- -lgc alone sufficient for link (pthread/dl transitive).
Pattern-shape note from gc_stress fixture writing: the post-14d
"if-then-else" replacement is `(match (app == n 0) (case
(pat-lit true) ...) (case (pat-wild) ...))`. Three lines for
what `if` used to do in one, but uniform with the language.
Worth flagging for the stdlib brief.
Language is feature-complete enough for stdlib. The three
blockers identified at the 14b boundary (redundancy 14d, tail
calls 14e, GC 14f) are all done. Plan 15a: first stdlib module
std_list.ailx with length/append/reverse/map/filter/fold_left/
fold_right/head/tail/is_empty.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Brummel
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