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[PR #5133] [CLOSED] fix(managed): distinguish truncated compressed signature integers #6781
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opened 2026-11-01 21:43:00 +00:00 by bsakaguchi
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📋 Pull Request Information
Original PR: https://github.com/morluto/rea/pull/5133
Author: @David-the-happy-piglet
Created: 10/19/2026
Status: ❌ Closed
Base:
main← Head:fix/5102-truncated-compressed-integers📝 Commits (4)
2750a21fix(managed): distinguish truncated compressed signature integersef109d6test(snapshot): align replay questions with evidence identityaf341f5chore: sync main to keep signature fix focuseda25d75btest(managed): cover MethodSpec compressed integer diagnostics📊 Changes
4 files changed (+182 additions, -27 deletions)
View changed files
➕
src/dotnet/ManagedCompressedInteger.test.ts(+52 -0)📝
src/dotnet/ManagedMemberInspector.test.ts(+52 -0)📝
src/dotnet/ManagedMemberInspectorCore.ts(+18 -27)➕
tests/acceptance/managedSignatureDiagnostics.test.ts(+60 -0)📄 Description
Summary
Fixes #5102. Managed member inspection now reports
truncated compressed integerwhen a valid two- or four-byte signature prefix is missing continuation bytes. Previously those inputs were incorrectly described as reserved encodings.Problem and expected behavior
A MethodDef signature such as
00 80or00 c0 00 00contains a truncated parameter count.inspect-managed-membersandinspect_managed_membersreturnedsignature.issue: "reserved compressed integer". The prefix determines the encoding width; absent continuation bytes should report truncation. Truly reserved prefixes such ase0still report reserved. Malformed status and partial coverage remain unchanged.Change and scope
Separate prefix recognition from byte-availability checks in the shared
readCompressedproducer and reuse the existing typed signature-failure helper. Preserve decoded values, next offsets and error locations. Add compiled CLI/stdio MCP regressions, producer boundary cases, and MethodSpec coverage for row-owned diagnostics and readable call targets. The four-file delta contains no snapshot expectation changes. This is a routine fix within existing static parsing scope; new-capability preapproval is not applicable.Follow the contribution scope.
Unresolved scope, authority, side effects, or required verification block
integration. Link the required maintainer scope decision for new providers or
capabilities involving target execution, injection, mutation, or protection
recovery; ordinary fixes within existing boundaries may state "not applicable".
Draft PRs may leave the scope decision pending and the readiness and merge checklists
unchecked. Maintainers can help resolve open questions.
Contract and boundary impact
docs/public/product-catalog.json), package, or installation impact (CI generates and validates ignored catalogs andskills/; edit authored instructions in.agents/skills/reverse-engineer-anything/and never commit build outputs): None; this patch does not change authored contracts, catalogs, packages or installation.Expected effects (check known effects; use documentation-only on its own).
Unchecked items do not establish absence; leave uncertainties visible.
The effect checklist describes the changed product behavior. Tests launch the CLI/MCP processes and write temporary fixtures, but never execute the inspected target.
Evidence and regression coverage
src/dotnet/ManagedCompressedInteger.test.ts,tests/acceptance/managedSignatureDiagnostics.test.ts, and the MethodSpec cases insrc/dotnet/ManagedMemberInspector.test.tsadd 22 regressions. The three new MethodSpec inputs (valid, truncated and reserved) preserve precise row-owned diagnostics, complete/partial coverage, and readable call targets. These cover valid integer boundaries/cursors, typed failure offsets, all continuation-byte cut-off points through compiled CLI/stdio MCP, a generic count, and valid/reserved controls with artifact identity and partial Evidence.main@8443692etree with the two regression files and the original parser failed seven cases (30 passed, two Windows-only skips across the regression and unchanged snapshot files). With the fix, those same three files passed 37 cases with the same two skips.00 80, both adapters returnsignature.parse_status: "malformed",signature.issue: "truncated compressed integer", andcoverage.state: "partial", preserving artifact digest and method identity.00 e0remains reserved;00 00 01remains decoded with complete coverage.For evidence-bearing changes:
Validation performed
Executed on macOS 26.5.2 arm64 with npm 11.16.0. The local follow-up
a25d75bdadds only three MethodSpec tests; production code is unchanged from the published fix.8443692e: one failure / 134 passes. Only0a 80failed with actualreserved compressed integerinstead of expectedtruncated compressed integer; valid and reserved controls passed. The fixed file passed all 135 cases. An independent reviewer repeated both runs.npm run test:focusedwith the member-inspection, signature-resolution, compressed-integer and signature CLI/MCP files — 174 passed.npm run checkpassed (0 lint errors, 1936 warnings).npm run verify:test-discoveryfound all 1815 test files exactly once. Normal pre-commit hooks passed without changing the reviewed patch.a25d75bdwithmain@592c46b0is conflict-free. It preserves all upstream changes and the same four-file, +182/-27 patch;directAnalysisSnapshotReplay.test.tsis absent from the delta and the trial merge retains main's version unchanged. Exact pinned toolchain and locked dependencies were used; the task branch was not merged or rebased.npm run test:focusedon that combined tree with 13 explicit managed producer, metadata, compiled CLI/stdio MCP, workflow Evidence, snapshot and managed application graph test files — 296 passed, two existing Windows-only skips.npm run checkon the combined tree — passed (0 lint errors, 2375 warnings; six tasks succeeded, two served from the local build cache).npm run verify:test-discovery— all 2160 test files discovered exactly once, using a separate Git index for the exact trial-merge tree.git diff --checkpassed. The earlier original-parser CLI/MCP failure evidence is recorded above; no full-suite or platform coverage is inferred from focused passes.Remote snapshot (2026-10-23 10:39 PDT), for published
af341f5bonly: CI and PR title remainaction_required, attempt 1, with zero jobs executed. Codex completed without findings; Greptile and PR readiness succeeded. These historicalaf341f5bstatuses do not validatea25d75bdor establish CI success. Required CI/title checks must execute successfully before merge.Compatibility, safety, and release
Author readiness
Human owner: @David-the-happy-piglet
Before merge
type(scope): outcome.🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.