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Informational 19 Bitcoin

msggen: fix non-determinism edge case

Public commit record

What the developer wrote

Authored by daywalker90

68/100 · Adequate
msggen: fix non-determinism edge case

After adding back some fields in 62d1e3e405f722e7363d8e8dbc427039a12c421a
there is one field that was in a different place sometimes in node.proto:
DecodeInvoicePathsPath

Changelog-None
✓ Descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context
The short version

What changed, and why it matters

This commit fixes a non-determinism bug in the code generator that produces gRPC protocol definitions for Core Lightning. The generator sometimes produced message definitions in a different order, which could cause unnecessary changes in generated files between builds. The fix sorts dictionary keys when merging schemas and iterating over properties. There is no direct security vulnerability here—this is a build reproducibility and code hygiene fix.

Recommended action

No security action required. Treat as a normal build/tooling fix. If reviewing, verify that the generated proto field numbers and types are unchanged (they are).

Security signals we found

01

No security-relevant code change

02

Build reproducibility / deterministic code generation

03

No change to wire protocol semantics or field numbers

04

No change to validation, authentication, or cryptography

Risk score

Why this scored 19/100

Our methodology →
Potential impact 2/30
Exploitability 0/25
Stealth signal 0/15
Affected reach 5/15
Confidence 8/10
Evidence quality 4/5
Human-validated context

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