Fix C++ Headers
SkillDev toolsUse when hl2sdk_cs2 C++ headers must be repaired to match the latest vtable or record-layout YAML references. Runs run_cpp_tests.py to obtain layout diffs, maps failing cpp_tests entries to their configured headers, edits only those headers, and repeats validation until the differences are resolved. Triggers: fix cpp headers, fix-cppheaders, repair vtable layout, repair record layout, header layout differences.
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What this skill tells your AI
The instructions your AI receives, as published by hlnd2t/cs2_vibesignatures in .claude/skills/fix-cppheaders/SKILL.md and read by ahel’s review.
Overview
Repair hl2sdk_cs2 declarations from compiler-versus-YAML layout differences. Treat
run_cpp_tests.py as the source of truth for both the initial diff and final verification.
Resolve GAMEVER from the user's explicit request or CS2VIBE_GAMEVER; use only
configs/$GAMEVER.yaml for test definitions and fail if it is missing.
Constraints
- Edit only header paths listed in the failing
configs/<GAMEVER>.yamlcpp_testsentry. - Require every edited header to be under
hl2sdk_cs2/. - Preserve existing names and style when the reference exposes only a slot or offset.
- Keep compiler declarations for gaps in incomplete reference YAMLs unless surrounding index shifts prove removal.
- Name unknown virtual slots consistently with nearby declarations, such as
unk_001; when only a known function name is available, usevirtual void FunctionName() = 0;until a reliable prototype is known. - Interpret
Class_dtorandClass_vdtorreference entries as virtual destructors forClass. - Do not edit reference YAMLs, tracked
bin_artifacts, cpp test sources, or comparison code to hide a difference. - Do not invoke an external agent runner. This SKILL owns the repair loop directly.
- Stop and report a blocker when the diff is ambiguous, the configured header is missing, or a required edit is outside
hl2sdk_cs2/.
Workflow
-
Determine the game version from the user's request. If omitted, read
CS2VIBE_GAMEVERfrom.env. -
Resolve a release-local immutable symbol candidate. Use a caller-provided actual candidate when available; otherwise build one from tracked
bin_artifacts/<gamever>/withgamesymbol_candidate.py buildand explicit temporary output/ session paths. Never use a trackedgamesymbols/fallback or read per-symbol truth frombin/. -
Run the complete comparison with debug details:
uv run run_cpp_tests.py -gamever <gamever> -configyaml configs/<gamever>.yaml -snapshot <snapshot> -debug -
For each test reporting layout differences, find its
cpp_testsentry inconfigs/<GAMEVER>.yamland read itssymbol,headers, target, aliases, and reference modules. -
Read the configured headers and the complete diff sections:
Current vtable entriesversusYAML reference vtable entriesCurrent record membersversusYAML reference struct members
-
Make the smallest declaration-only edit that aligns the header with the reference. Typical edits are reordering, adding, or removing virtual declarations; correcting inheritance; and adjusting record members or padding.
-
Re-run the same command with the same snapshot. If differences remain, use the new output rather than the previous diff and repeat.
-
Finish only when the command exits successfully with zero compile failures, invalid items, and layout differences.
Failure Handling
- If compilation fails after an edit, inspect the compiler error, repair the edited declaration, and rerun.
- If unrelated pre-existing failures prevent a clean full run, verify the affected test output as far as the runner permits and report the unrelated failures verbatim.
- If
headersis absent or empty, do not guess an edit target. Report the test name and request a config correction. - If multiple headers are configured, trace the declared symbol before choosing the file; do not edit every header blindly.
Completion Report
Report the headers changed, the layout mismatches corrected, and the exact final verification command and result.
Signals
- GitHub stars
- 65
- Forks
- 10
- Last commit
- Sep 2026
Advanced
- Catalog kind
- skill
- Gateway key
fix-cppheaders- Source
- github.com/hlnd2t/cs2_vibesignatures