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[AW Top 10] 06 Close recurring Go linter analyzer blind spots #67451

Description

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Priority 6/10 | 8 source issues | Impact 2/5 | Confidence 4/5 | Effort 3/5

One assignment, one coherent fix

Several custom analyzers miss aliases, discards or iterator loops, and the shared coverage helper is column-blind and nondeterministic.

Implementation scope

Fix the shared matcher and coverage helper, add range-over-func handling to deferinloop, and add testdata for each reported gap.

Done when

  • Each reported gap has a failing fixture that now passes.
  • The coverage helper returns a deterministic result for overlapping paths.

Why now

The issues are independent audits with concrete code evidence, and several repeat earlier gaps. Impact is limited to lint quality.

AW source issues and corroborating reports

#65753 #66009 #66436 #66773 #67102 #67336 #65391 #65911

No corroborating AW discussion; evidence comes from the source issues.

Unchanged AW sources close only after this summary is completed. Newer source activity and not-planned retirement do not trigger source closure. Assigned summaries are frozen; unassign to allow reclustering.

Generated by AW Essential Issue Clustering · copilot · auto · 40.1 AIC · ⌖ 0.589 AIC · ⊞ 8.9K · ◷

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