Axiom Lldb

What it does

This skill enables AI agents to interactively debug applications using LLDB (Low Level Debugger). It allows for pausing application execution to inspect variables, evaluate expressions, navigate threads, and understand the root cause of issues. The skill addresses situations where a user lacks familiarity with specific LLDB commands, particularly when dealing with Swift types, framing this as a knowledge gap rather than a tool deficiency.

When to use it

This skill is helpful in scenarios such as:

• Inspecting variable values during runtime.
• Reproducing and debugging local crashes.
• Diagnosing incorrect runtime values despite seemingly correct code.
• Understanding thread state when an application hangs.
• Troubleshooting issues where po (print object) commands return unexpected results.
• Recreating crashes from crash logs to set breakpoints.

Key capabilities

• Interactive debugging with LLDB.
• Breakpoint setting and inspection of variables.
• Expression evaluation for testing fixes without rebuilding.
• Exception breakpoint configuration.
• Thread backtrace analysis during hangs.
• Provides structured output including diagnosis, commands, expected outputs, likely root causes, and next steps.

Example prompts

• "I'm seeing an unexpected value for myVariable. Can you help me debug it using LLDB?"
• "My app is crashing. I have the crash log; can you set breakpoints to reproduce it with LLDB?"
• "The application hangs sometimes. How can I use LLDB to investigate the thread state?"

Tips & gotchas

• LLDB is most effective when you need to understand what's happening at a specific moment in time, as opposed to identifying trends over longer periods (for which Instruments would be more suitable).
• The skill aims to bridge knowledge gaps regarding LLDB commands, particularly for Swift types.