c-bounds-safety

Q: How do I install c-bounds-safety?

Run npx skills add https://github.com/superagents-lab/xcode27-skills --skill c-bounds-safety in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/c-bounds-safety/ (personal) or .claude/skills/c-bounds-safety/ (project).

by superagents-labCode Quality & Workflow

Guide for the C -fbounds-safety language extension. Covers the language model, pointer annotations, adopting bounds-safety in existing C code, compiler build settings and modes, and runtime debugging of bounds violations.

Installs: 625
Last 24h: —
Trending rank: —
Security: Not audited

Install

Works with every agent the skills CLI supports.

npx skills add https://github.com/superagents-lab/xcode27-skills --skill c-bounds-safety

01
Install
Run the command in your project. The CLI asks which agents to install for.
02
Describe the task
Ask your agent for something this skill covers. It loads c-bounds-safety automatically when relevant.
03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.

SKILL.md

The instructions your agent reads when the skill is triggered.

How to Use This Skill

When helping with -fbounds-safety adoption or code changes, ask clarifying questions about the user's codebase and goals before suggesting changes. For complex tasks involving multiple files or non-trivial annotation decisions, use plan mode to propose an approach before implementing.

`-fbounds-safety` Language Extension

-fbounds-safety is a C language extension that prevents out-of-bounds memory access by enforcing bounds safety at the language level. It inserts automatic bounds checks at runtime, rejects unsafe pointer operations at compile time, and requires programmers to provide bounds annotations so the compiler can guarantee safety. Out-of-bounds accesses become deterministic traps instead of exploitable vulnerabilities.

Detailed Documentation

Required reading before adoption work

You MUST have fully read the following three documents (via the Read tool) at the start of an adoption task, and re-read them via the Read tool before any source-modifying step in the adoption workflow unless their content is verifiably fresh in your active context:

adoption-strategies.md — the workflow for adopting -fbounds-safety in an existing C project (full and header-only modes).
language-overview.md — the language reference for -fbounds-safety: pointer kinds, annotations, and the rules that govern them.
common-patterns-and-pitfalls.md — recipes and anti-patterns encountered during real-world adoption.

Other references (read on demand)

For compiler flags, Xcode build settings, soft trap mode, and ptrcheck.h configuration, read build-settings.md.

For debugging bounds violations at runtime — trap behavior, LLDB commands, wide pointer inspection, watchpoints, crash log analysis, and soft trap debugging, read runtime-debugging.md.

FAQ

What does the c-bounds-safety skill do?

How do I install c-bounds-safety?

Run npx skills add https://github.com/superagents-lab/xcode27-skills --skill c-bounds-safety in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/c-bounds-safety/ (personal) or .claude/skills/c-bounds-safety/ (project).

Which AI agents can use c-bounds-safety?

Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.

Is c-bounds-safety safe to install?

No partner security audit is available yet. Skills can run commands and scripts, so read the SKILL.md and any bundled files before installing.

Who maintains c-bounds-safety?

It is published by superagents-lab in superagents-lab/xcode27-skills. It has 625 recorded installs.