Skip to main content Implement memory-safe programming with RAII, ownership, smart pointers, and resource management across Rust, C++, and C. Use when writing safe systems code, managing resources, or preventing memory bugs.
npx skills add wshobson/agents --skill memory-safety-patterns agents claude claude-code subagents anthropic automation
Memory Safety Patterns
Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management.
When to Use This Skill
Writing memory-safe systems code
Managing resources (files, sockets, memory)
Preventing use-after-free and leaks
Implementing RAII patterns
Choosing between languages for safety
Debugging memory issues
Core Concepts
1. Memory Bug Categories
Bug Type Description Prevention Use-after-free Access freed memory Ownership, RAII Double-free Free same memory twice Smart pointers Memory leak Never free memory RAII, GC Buffer overflow Write past buffer end Bounds checking Dangling pointer Pointer to freed memory Lifetime tracking
Concurrent unsynchronized access
2. Safety Spectrum Manual (C) → Smart Pointers (C++) → Ownership (Rust) → GC (Go, Java)
Less safe More safe
More control Less control
Detailed patterns and worked examples Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.
Best Practices
Do's
Prefer RAII - Tie resource lifetime to scope
Use smart pointers - Avoid raw pointers in C++
Understand ownership - Know who owns what
Check bounds - Use safe access methods
Use tools - AddressSanitizer, Valgrind, Miri
Don'ts
Don't use raw pointers - Unless interfacing with C
Don't return local references - Dangling pointer
Don't ignore compiler warnings - They catch bugs
Don't use unsafe carelessly - In Rust, minimize it
Don't assume thread safety - Be explicit
Debugging Tools # AddressSanitizer (Clang/GCC)
clang++ -fsanitize=address -g source.cpp
# Valgrind
valgrind --leak-check=full ./program
# Rust Miri (undefined behavior detector)
cargo +nightly miri run
# ThreadSanitizer
clang++ -fsanitize=thread -g source.cpp
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Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Set up and use 1Password CLI (op). Use when installing the CLI, enabling desktop app integration, signing in (single or multi-account), or reading/injecting/running secrets via op.
CLI to manage emails via IMAP/SMTP. Use `himalaya` to list, read, write, reply, forward, search, and organize emails from the terminal. Supports multiple accounts and message composition with MML (MIME Meta Language).