russell@unturf.com
3986d8dc50
New diamond recursion defects (O(2^D) → O(N)): - godot-0009: Font::_is_cyclic no visited set — CJK fallback diamond, 2648x at F=4,D=8 - godot-0010: Font::_update_rids_fb no visited set — duplicate RIDs + O(N^2) hot path - meson-0002: get_internal_static_libraries_recurse link_whole guard missing — 132x at D=10 - typescript-0003: hasBaseType inner check() no visited set — 1024x at D=10; hot on instanceof New O(N²) defects: - typeorm-0004: SubjectTopologicalSorter Array.indexOf dedup — 200x at N=400 - typeorm-0005: DepGraph.createDFS result.indexOf + addDependency edge dedup — 300x at N=600 CLEAN confirmed (diamond recursion sweep): bazel, cargo, cmake, composer, dgl, diesel, doctrine-orm, efcore, helm, mybatis, networkx-deeper, ninja, npm-arborist, peewee, pip, rubygems, seaorm, sqlalchemy, swift UNDF: 571→578 assigned; MOAD count: 629→635
15 lines
577 B
Markdown
15 lines
577 B
Markdown
# peewee diamond recursion scan — CLEAN
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Scanned: 2026-03-29
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Scope: diamond recursion / CWE-407 in ORM dependency graph traversal
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## Files checked
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- `peewee.py:7395 sort_models()` — DFS over model dependency graph using `seen` set
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(`if model not in seen: seen.add(model)`). O(1) visited check per DFS step. Clean.
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- `peewee.py:7177 Model.dependencies()` — BFS with `seen` set for backreference traversal. Clean.
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## Verdict
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CLEAN. Both `sort_models` and `dependencies` use Python `set` for O(1) visited
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tracking. No diamond recursion (unbounded revisiting) pattern.
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