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fence: declared bytes are never judged nor listed; the scan's sites sorted by bytes, as many as asked, and all to a file

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What @alloc_ok covers (a function and its callees, a statement, a statement in a generic's body on
every instance) was counted apart in the frame's verdict, but its sites still carried the bytes the
report and the census rank by, so a declared site was listed as if the frame failed for it. Declared
bytes now have their own per-site counter and never enter live, a site's row or the verdict:
examples/lang/alloc_fence_declared.ludic, all three forms after warm-up, passes the failing fence
('bad 0 kept 0', 1488 bytes declared), with and without the arena, and an undeclared site in the same
frame is still the one listed.

The reachability scan's sites are now the largest first (R3D_ALLOC_SCAN_TOP, 24 by default), and
R3D_ALLOC_SCAN_FILE=<file> appends every site that holds unreachable bytes: the whole table to triage.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-28 18:03:00 +03:00
parent 5e80db327d
commit 5aa7c03022
6 changed files with 62828 additions and 62383 deletions
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1
tools/ludic-cli/test.ludic
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@ -1132,6 +1132,7 @@ function cmd_dev_test() -> int {
feat_case("lang/string_temps", "", "1 2 3 4 5 6 7 grew 0", "string_temps.ludic (a concatenation's pieces, a template's holes and a compared side are freed once used; a kept one is not)")
feat_case("lang/json_saves", "", "1 2 3 saves grew 0", "json_saves.ludic (Json.write_file saves through a kept buffer: the text Json.encode gives, 1000 saves keep nothing)")
feat_case("lang/alloc_fence", "", "frames 300 kept 0 bad 0", "alloc_fence.ludic (25.1: a frame that makes only what it frees or reuses keeps nothing, and the fence passes it)")
feat_case("lang/alloc_fence_declared", "", "bad 0 kept 0", "alloc_fence_declared.ludic (25.1: @alloc_ok on a function, a statement and a generic's statement is declared at run time; the failing fence lets it through)")
alloc_fence_leak_case()
alloc_fence_auto_case()
arena_pool_case()