russell@unturf.com
39981c70ad
Renumbering fixes (collisions with pre-existing IDs): - spring-0001-annotations-scanner → spring-0007 (spring-0001 was already assigned) - hibernate-0001-class-hierarchy-helper → hibernate-validator-0003 (wrong ecosystem/numbering) - django-0006-migrations-flatten-bases → django-0007 (django-0006 was already assigned) New diamond defects from agents that rate-limited before committing: - micronaut-0007: SuperclassAwareTypeVisitor.getInterfaces O(2^D) (new site) - quarkus-0005: ConfigMappingUtils.collectInterfacesRec O(2^D) (new site) - weld-0005: Services.identifyServiceInterfaces O(2^D) (new site) - typescript-0005: hasBaseType O(2^D) diamond interface hierarchy - rails-0019: Digestor#dependency_digest Array#include? O(N²) cycle detection CLEAN: go, rustc (diamond recursion patterns absent)
24 lines
1.4 KiB
Markdown
24 lines
1.4 KiB
Markdown
# rustc — CWE-407 Diamond Recursion Scan — CLEAN
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Scanned: `compiler/rustc_trait_selection/src/`, `compiler/rustc_infer/src/traits/`, `compiler/rustc_middle/src/ty/`
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(Note: sparse clone — only `rustc_infer`, `rustc_middle`, `rustc_trait_selection` crates present.
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`rustc_type_ir` contains the `Elaborator` struct; it re-exports into scope via `pub use rustc_middle::ty::elaborate::*`.)
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## Functions Examined
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| Function | File | Guard | Verdict |
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|----------|------|-------|---------|
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| `transitive_bounds_that_define_assoc_item` | rustc_infer/traits/util.rs | `if !seen.insert(...) { continue; }` | CLEAN |
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| vtable DFS loop | rustc_trait_selection/traits/vtable.rs | `visited.insert(super_trait)` as guard in `.find()` | CLEAN |
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| `auto_trait` predicate loop | rustc_trait_selection/traits/auto_trait.rs | `if !already_visited.insert(pred)` | CLEAN |
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| `seen_projection_preds` | rustc_trait_selection/traits/util.rs | `if !seen_projection_preds.insert(...)` | CLEAN |
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| `checked_wf_args` | rustc_trait_selection/src/traits/query/... | `if !checked_wf_args.insert(arg)` | CLEAN |
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## Note
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The `elaborate` iterator in `rustc_type_ir::elaborate` (not cloned) is called as a BFS/worklist
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iterator, not as a recursive function. The sparse-clone boundary stops here; the pattern as used
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through all call sites in the 3 available crates is iterator-based with deduplication guards.
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**Scan verdict: CLEAN — no CWE-407 diamond recursion defects found in cloned crates.**
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