memory-safety-patterns
Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management.
About this skill
This skill equips AI agents with a comprehensive understanding of memory safety patterns applicable across various programming languages. It covers fundamental concepts such as Resource Acquisition Is Initialization (RAII), ownership models (e.g., inspired by Rust), smart pointers (like `std::unique_ptr`, `std::shared_ptr`), and general strategies for secure resource management. The agent can leverage this knowledge to assist in designing, implementing, and reviewing code to prevent common memory-related vulnerabilities like use-after-free errors, memory leaks, and other undefined behaviors. It serves as a practical guide for building robust and reliable systems programming.
Best use case
Designing memory-safe systems; Implementing robust resource management; Preventing common memory-related vulnerabilities; Guiding language selection for safety; Debugging memory issues; Reviewing code for memory safety compliance.
Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management.
The AI agent will provide expert guidance, code examples, or architectural recommendations that integrate memory-safe programming practices. This leads to more secure, stable, and performant software, minimizing memory-related bugs and vulnerabilities.
Practical example
Example input
Explain the concept of RAII and provide an example in C++ for managing a file handle. Why is it considered a memory-safety pattern?
Example output
RAII (Resource Acquisition Is Initialization) is a C++ programming idiom that ties the lifetime of a resource to the lifetime of an object. The resource is acquired during the object's construction and released during its destruction. This ensures that resources are always properly managed and prevents resource leaks.
It's considered a memory-safety pattern because:
1. **Automatic Resource Release:** Even if exceptions occur, the destructor will be called, releasing the resource.
2. **Encapsulation:** Resource management logic is encapsulated within a class.
3. **Prevents Leaks:** Guarantees cleanup, preventing memory, file, or other resource leaks.
Example in C++ for managing a file handle:
```cpp
#include <fstream>
#include <iostream>
#include <stdexcept>
// RAII wrapper for a file
class FileHandler {
public:
FileHandler(const std::string& filename) : file_(filename) {
if (!file_.is_open()) {
throw std::runtime_error("Could not open file: " + filename);
}
std::cout << "File '" << filename << "' opened." << std::endl;
}
~FileHandler() {
if (file_.is_open()) {
file_.close();
std::cout << "File closed automatically by RAII." << std::endl;
}
}
// Expose a way to use the file (e.g., write to it)
void write(const std::string& text) {
if (file_.is_open()) {
file_ << text << std::endl;
}
}
private:
std::ofstream file_;
};
void processFile(const std::string& filename) {
try {
FileHandler myFile(filename); // Resource acquired here
myFile.write("Hello, RAII!");
// ... more operations
// If an exception occurs here, myFile's destructor will still be called.
} catch (const std::exception& e) {
std::cerr << "Error: " << e.what() << std::endl;
} // Resource released automatically when myFile goes out of scope
}
int main() {
processFile("example.txt");
// No need to manually close example.txt
return 0;
}
```
In this example, `FileHandler` uses RAII to ensure that the `ofstream` (file resource) is automatically closed when the `FileHandler` object `myFile` goes out of scope, regardless of how `processFile` exits (normal return or exception).When to use this skill
- Writing memory-safe systems code
- Managing resources (files, sockets, memory)
- Preventing use-after-free and leaks
- Implementing RAII patterns
When not to use this skill
- The task is unrelated to memory safety patterns
- You need a different domain or tool outside this scope
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/memory-safety-patterns/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How memory-safety-patterns Compares
| Feature / Agent | memory-safety-patterns | Standard Approach |
|---|---|---|
| Platform Support | Claude | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | easy | N/A |
Frequently Asked Questions
What does this skill do?
Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management.
Which AI agents support this skill?
This skill is designed for Claude.
How difficult is it to install?
The installation complexity is rated as easy. You can find the installation instructions above.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
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SKILL.md Source
# Memory Safety Patterns Cross-language patterns for memory-safe programming including RAII, ownership, smart pointers, and resource management. ## Use this skill when - 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 ## Do not use this skill when - The task is unrelated to memory safety patterns - You need a different domain or tool outside this scope ## Instructions - Clarify goals, constraints, and required inputs. - Apply relevant best practices and validate outcomes. - Provide actionable steps and verification. - If detailed examples are required, open `resources/implementation-playbook.md`. ## Resources - `resources/implementation-playbook.md` for detailed patterns and examples.
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