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[PR #6069] [MERGED] fix(native): retain decoded zero-address Swift class references #7138

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opened 2026-11-01 21:45:40 +00:00 by bsakaguchi · 0 comments

bsakaguchi commented

2026-11-01 21:45:40 +00:00

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📋 Pull Request Information

Original PR: https://github.com/morluto/rea/pull/6069
Author: @xiaofeilovecoding
Created: 10/21/2026
Status: ✅ Merged
Merged: 10/21/2026
Merged by: @morluto

Base: main ← Head: fix/swift-conformance-zero-rebase-6000

📝 Commits (1)

34a9919 fix(native): retain decoded zero-address Swift class references

📊 Changes

2 files changed (+106 additions, -1 deletions)

View changed files

📝 src/native/AppleDispatchMetadata.test.ts (+104 -0)
📝 src/native/AppleSwiftConformanceTypeReference.ts (+2 -1)

📄 Description

Summary

Fixes #6000. Preserve a decoded kind-3 Swift conformance rebase to address zero instead of publishing a null target.

Problem and expected behavior

The indirect Objective-C class decoder treats both raw zero and a known rebase to zero as absent. Only unfixed raw zero is nullable. A known mapped zero must remain {address:"0x0",file_offset:0}; class-name recovery remains partial.

Change and scope

Restrict null conversion to raw pointers, matching the neighboring kind-1 and relative-pointer readers. Add five byte-fixture cases through the real Mach-O fixup and dispatch decoders: zero/nonzero/unmapped rebases and raw zero/nonzero. Preserve protocol and indirect-cell locations, nullable names and runtime-lookup limitations.

Contract and boundary impact

Semantic owner: decodeIndirectObjcClass.
Scope decision: not applicable; correction within existing static analysis.
CLI/MCP schemas, provider authority, cleanup and installation: unchanged. Existing result now retains a known address.
Evidence: partial status and source locations remain; no guessed class identity.
Package/generated metadata: unchanged.

Expected effects:

Read existing files or captured data.

Evidence and regression coverage

Executed on Windows with Node 24.18.0/npm 11.16.0. On the original implementation, the same dispatch module had 1 failure/86 passes: the zero-rebase target was null. The fixed assertion returns {address:"0x0",file_offset:0}. The other four pointer controls pass in both versions. The fixture is hand-authored bytes, not Apple linker output; it does not establish a valid runtime class at zero.

Observed, derived, and inferred claims remain distinguishable.
Artifact identity, source provenance, and failed attempts remain preserved.
Unsupported, incomplete, unavailable, or uncertain outcomes remain visible.

Validation performed

npm run test:local -- src/native/AppleDispatchMetadata.test.ts src/native/AppleSwiftConformanceTypeReference.test.ts src/native/AppleSwiftVtables.test.ts src/native/AppleMachoFixups.test.ts — 163 passed across 4 files.
npm run check:fast and npm run check — passed; existing lint warnings remain. The latter is the static gate, not the complete test suite.
npm run verify:test-discovery — all 1,924 test files discovered exactly once.
git diff --check and actual pre-commit formatting/lint hooks — passed.

Compatibility, safety, and release

No schema, package, execution or authority expansion. Inspected fixture bytes are never executed. macOS public CLI/MCP and Apple clang/dyld_info replay were unavailable on Windows; no real Hopper/Ghidra/Frida run is claimed.

Author readiness

Human owner: @xiaofeilovecoding

I reviewed the final diff and relevant existing code, understand the change and its edge cases, and take responsibility for the complete PR, including AI-assisted work.
I checked the evidence above, confirmed it supports the current change, and recorded meaningful validation gaps.
I declare this PR ready for initial maintainer review.

Before merge

This PR addresses a concrete problem or an agreed enhancement.
Material scope and authority questions are resolved, and any required maintainer scope decision covers the final diff.
The PR has one focused outcome and the title follows type(scope): outcome.
Related issue is linked, or the reason for not linking one is stated above.
Tests cover changed observable behavior and meaningful failure paths.
Owning docs, contracts, and generated metadata are updated where needed.
User-visible CLI/MCP changes include representative output.
I checked the final diff for secrets, unrelated cleanup, and unsupported claims.

_{🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.}

## 📋 Pull Request Information **Original PR:** https://github.com/morluto/rea/pull/6069 **Author:** [@xiaofeilovecoding](https://github.com/xiaofeilovecoding) **Created:** 10/21/2026 **Status:** ✅ Merged **Merged:** 10/21/2026 **Merged by:** [@morluto](https://github.com/morluto) **Base:** `main` ← **Head:** `fix/swift-conformance-zero-rebase-6000` --- ### 📝 Commits (1) - [`34a9919`](https://github.com/morluto/rea/commit/34a9919ceb0181cb52494ff601bfe8d78b6732a6) fix(native): retain decoded zero-address Swift class references ### 📊 Changes **2 files changed** (+106 additions, -1 deletions) <details> <summary>View changed files</summary> 📝 `src/native/AppleDispatchMetadata.test.ts` (+104 -0) 📝 `src/native/AppleSwiftConformanceTypeReference.ts` (+2 -1) </details> ### 📄 Description ## Summary Fixes #6000. Preserve a decoded kind-3 Swift conformance rebase to address zero instead of publishing a null target. ## Problem and expected behavior The indirect Objective-C class decoder treats both raw zero and a known rebase to zero as absent. Only unfixed raw zero is nullable. A known mapped zero must remain `{address:"0x0",file_offset:0}`; class-name recovery remains partial. ## Change and scope Restrict null conversion to raw pointers, matching the neighboring kind-1 and relative-pointer readers. Add five byte-fixture cases through the real Mach-O fixup and dispatch decoders: zero/nonzero/unmapped rebases and raw zero/nonzero. Preserve protocol and indirect-cell locations, nullable names and runtime-lookup limitations. ## Contract and boundary impact - Semantic owner: `decodeIndirectObjcClass`. - Scope decision: not applicable; correction within existing static analysis. - CLI/MCP schemas, provider authority, cleanup and installation: unchanged. Existing result now retains a known address. - Evidence: partial status and source locations remain; no guessed class identity. - Package/generated metadata: unchanged. Expected effects: - [x] Read existing files or captured data. ## Evidence and regression coverage Executed on Windows with Node 24.18.0/npm 11.16.0. On the original implementation, the same dispatch module had 1 failure/86 passes: the zero-rebase target was null. The fixed assertion returns `{address:"0x0",file_offset:0}`. The other four pointer controls pass in both versions. The fixture is hand-authored bytes, not Apple linker output; it does not establish a valid runtime class at zero. - [x] Observed, derived, and inferred claims remain distinguishable. - [x] Artifact identity, source provenance, and failed attempts remain preserved. - [x] Unsupported, incomplete, unavailable, or uncertain outcomes remain visible. ## Validation performed - `npm run test:local -- src/native/AppleDispatchMetadata.test.ts src/native/AppleSwiftConformanceTypeReference.test.ts src/native/AppleSwiftVtables.test.ts src/native/AppleMachoFixups.test.ts` — 163 passed across 4 files. - `npm run check:fast` and `npm run check` — passed; existing lint warnings remain. The latter is the static gate, not the complete test suite. - `npm run verify:test-discovery` — all 1,924 test files discovered exactly once. - `git diff --check` and actual pre-commit formatting/lint hooks — passed. ## Compatibility, safety, and release No schema, package, execution or authority expansion. Inspected fixture bytes are never executed. macOS public CLI/MCP and Apple clang/dyld_info replay were unavailable on Windows; no real Hopper/Ghidra/Frida run is claimed. ## Author readiness Human owner: @xiaofeilovecoding - [x] I reviewed the final diff and relevant existing code, understand the change and its edge cases, and take responsibility for the complete PR, including AI-assisted work. - [x] I checked the evidence above, confirmed it supports the current change, and recorded meaningful validation gaps. - [x] I declare this PR ready for initial maintainer review. ## Before merge - [x] This PR addresses a concrete problem or an agreed enhancement. - [x] Material scope and authority questions are resolved, and any required maintainer scope decision covers the final diff. - [x] The PR has one focused outcome and the title follows `type(scope): outcome`. - [x] Related issue is linked, or the reason for not linking one is stated above. - [x] Tests cover changed observable behavior and meaningful failure paths. - [x] Owning docs, contracts, and generated metadata are updated where needed. - [ ] User-visible CLI/MCP changes include representative output. - [x] I checked the final diff for secrets, unrelated cleanup, and unsupported claims. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

bsakaguchi

2026-11-01 21:45:40 +00:00

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bsakaguchi referenced this issue

2026-11-03 00:29:28 +00:00

[GH-ISSUE #3795] [Tracker] Open documentation issues and pull requests (October 2026) #1468

bsakaguchi referenced this issue

2026-11-03 00:29:32 +00:00

[GH-ISSUE #5653] [Tracker] New issue intake by area (October 2026) #3423

bsakaguchi referenced this issue

2026-11-03 13:39:31 +00:00

[PR #7139] [MERGED] docs(cli): document standard input for JSON request arguments #7670

bsakaguchi referenced this issue

2026-11-04 11:07:27 +00:00

[GH-ISSUE #7138] [Docs] CLI JSON request arguments do not document reading standard input with - #4284

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