LEAX: AI-Powered Memory Leak Analysis for C Programs

LEAX (Leak Analyzer & eXplorer) is a command-line interface (CLI) tool designed to enhance the analysis of memory leaks in C programs. By utilizing a sophisticated combination of Valgrind, GDB for dynamic tracing, and Mistral AI, LEAX effectively identifies the root causes of memory leaks and provides clear explanations along with actionable solutions.

Key Features

• Deterministic Leak Analysis: LEAX separates memory leak analysis into two phases:
  1. Root Cause Identification: Leveraging Valgrind for leak detection, and GDB for dynamic execution tracing, LEAX provides precise information on memory allocation and usage.
  2. AI-Assisted Explanation: Mistral AI interprets the data gathered from the deterministic analysis to illuminate the underlying cause of each leak, thereby offering targeted fixes.

Why Choose LEAX?

Typical large language models (LLMs) may struggle with memory leak analysis since they do not accurately simulate memory usage or handle complex cases effectively. LEAX addresses these shortcomings by ensuring that AI explanations are grounded in verified deterministic data, eliminating guesswork from the analysis process.

How LEAX Works

The process is streamlined:

Source + Executable
        |
        v
   1. Valgrind         →  Detects leaks and reports memory allocation and freeing locations
        |
        v
   2. GDB Tracing      →  Provides dynamic execution tracing through loops and conditions
        |
        v
   3. Memory Tracker    →  Monitors memory ownership and highlights the precise line of the leak
        |
        v
   4. Mistral AI        →  Explains the root cause and suggests an effective fix

GDB follows the execution path through loops, branches, and function calls, ensuring a detailed understanding of memory operations.

Leak Classification

LEAX categorizes memory leaks into three distinct types, allowing for precise diagnosis:

Each classification directs attention to the exact line of code responsible for the memory issue.

Limitations

• LEAX focuses exclusively on definitely lost leaks as reported by Valgrind.
• Only one allocation is tracked at a time.
• Single execution path analysis, without support for multi-threading.

Reporting Issues

If LEAX encounters inaccuracies in diagnosis or fails during code analysis, users are encouraged to open an issue on GitHub, providing details and sample code to facilitate improvements.

Design Philosophy

LEAX aims to complement existing tools like Valgrind rather than replace them. Its dual approach—using deterministic analysis for accurate root cause identification alongside LLMs for elucidation and educational recommendations—makes LEAX a valuable asset for developers seeking to enhance their understanding of C programming and memory management.