[sergo] Sergo Report: STABLE-73 reverse-phantom refile + 9-linter clean audit sweep - 2026-09-24

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Executive summary

Run 76. Registry stable at 73 analyzers (no delta since R74). Reconcile found one auto-expired issue whose bug is still 100% unfixed (9th reverse-phantom overall in this repos history) and refiled it. With no new linter available to audit, this runs new-exploration budget went to first-ever solo bug-audits of 9 previously-unexamined linters, all came back clean.

Split: 50% cached-vein (gh api reconcile against the 14 tracked open issues) / 50% new-explore (solo audits of never-before-audited linters).

Tool and registry status

• Serena: 24 tools, stable, no change from prior runs.
• Registry: grep -c Analyzer,$ pkg/linters/registry.go = 73, unchanged since R74 (uncheckedsliceindex).

Reconcile findings

13 of 14 tracked open issues (sg69a1 through sg75a2) confirmed still open, unchanged. One flipped:

• globwalkignorederror + strconvparseignorederror: AssignStmt-only filter misses bare ExprStmt discards #61265 (globwalkignorederror + strconvparseignorederror, node_filter_too_narrow) auto-expired closed/not_planned. Re-read both linters: still exactly one nodeFilter entry, (*ast.AssignStmt)(nil), with zero *ast.ExprStmt handling. A bare os.ReadDir(dir) or strconv.Atoi(s) statement (legal Go, error silently dropped) remains completely invisible to either CI-enforced linter. This is the 9th confirmed reverse-phantom-reconcile in this repos issue history, and the 2nd time this exact bug has been refiled after auto-expiry.

New-explore: 9 linters solo-audited, all clean

stringsconcatloop, regexpdynamicpattern, hardcodedfilepath, manualpathconcat, bytescomparestring, uncheckedflushreturn, generatedyamlheredoc, stringbytesroundtrip, uncheckedtypeassertion.

No new bugs found. Two notable observations:

• stringsconcatloops own testdata explicitly documents x = y + x (prepend form) and chained x = x + a + b as intentional, deliberately-unflagged scope limits, not bugs. This reconfirms the standing rule against re-filing design-documented limitations.
• uncheckedflushreturn (which checks ExprStmt + AssignStmt + DeferStmt together) is a clean reference for the exact fix shape the refiled globwalkignorederror/strconvparseignorederror issue needs.

Additional supporting context (not filed as a separate issue)

mapdeletecheck.go has its own sameExpr helper (Ident/BasicLit/ParenExpr/SelectorExpr/StarExpr/IndexExpr, fully recursive) that is well-designed and audited clean, a useful reference implementation contrasting with uncheckedsliceindex.gos Ident-only sameExpr (already tracked in open issue #62540). This workflows available safe-output tools (create_issue, create_discussion, missing_tool, missing_data, noop) do not include an issue-comment capability, so the follow-up comment suggested by last runs notes could not be posted; it is recorded in repo memory for a future run instead.

Task generated this run

1. Refiled globwalkignorederror + strconvparseignorederror: AssignStmt-only filter still misses bare ExprStmt discards (9th reverse-phantom), add an ExprStmt branch to each linter mirroring jsonmarshalignoredeerrors existing checkDiscardedJSONExpr fix.

Metrics

• Findings this run: 3 (1 reverse-phantom bug reconfirmed + code-cited, 9 clean audits closing out exploration candidates)
• Issues created: 1
• Cumulative: 76 runs, 480 findings, 132 tasks generated, running average success score ~8.8/10

Next-run focus

Verify sg76a1 landed. If the registry grows past 73, prioritize a fresh audit of the new linter. Otherwise, the 9 linters audited this run are exhausted, next candidates are stringsjoinone, stringscountcontains, stringsindexhasprefix, ioutildeprecated, httpstatuscode, goroutinemissingrecover, ssljson, seenmapbool, walkfuncerrshadow, packagelevelmutableslicemap, errormessage, timenowsub, and mapclearloop, cross-checked against prior memory notes first since several may already be informally covered.

References:

• §35952942022

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Generated by 🤖 Sergo - Serena Go Expert · claude · agent · 247.5 AIC · ⌖ 8.38 AIC · ⊞ 7K · ◷

• expires on Sep 24, 2026, 7:58 PM UTC-08:00

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This discussion was automatically closed because it expired on 2026-09-25T03:58:45.538Z.

Closed by Workflow