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Open_Ultra_SAST/benchmarks/measurements
Marius CiepluchandClaude Opus 5 309faad266 measure: the candidate generator must be the IR, not the ruleset
A candidate-driven detector can only judge sites something else enumerates,
so the enumerator caps recall. Measured over the 58 scorable web pairs before
building anything:

  pattern ruleset:  12.1% ceiling -- and the misses are not near-misses, the
                    ruleset finds nothing at all in most of these files
  semantic IR:      96.6% ceiling, a median of ten call sites and bindings
                    inside the labeled function

The ruleset would have capped us at 12.1% against the 64.9% the unconstrained
loop already reaches. That design was one commit from being built.

Two corpus defects found on the way, both mine from task 4.1. The overleaf
excerpt started mid-import, because `_declarator_start` walks back to the
nearest `}` and Overleaf writes JavaScript without semicolons, so the nearest
one was inside `import { expressify }`. It then ended mid-object-literal,
because registration mentions were appended as bare lines. Neither parsed,
and a pair that cannot be parsed cannot be scored. Registration mentions now
expand to the statement that contains them; the ceiling moved 94.8% -> 96.6%.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01T7XD7x5KonMdmGRkp63EQG
2026-09-06 16:04:07 +02:00
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