LLDB is a source-level debugger developed as part of the LLVM project. It uses components from LLVM and Clang to examine running programs, inspect their state and help developers track down errors.
The debugger is particularly well suited to C, C++ and Objective-C development. Its use of Clang’s expression parser allows developers to evaluate complex expressions in the context of a suspended program, rather than being limited to inspecting individual variables.
LLDB offers an interactive command-line interface together with extensive scripting facilities. Its underlying APIs can also be used by graphical development environments and other debugging tools.
This is free and open source software.
Key Features
- Set conditional breakpoints, watchpoints and breakpoint commands to control where execution stops.
- Step through source code or machine instructions and inspect the current execution context.
- Examine local variables, registers, memory, threads and stack frames.
- Evaluate C, C++ and Objective-C expressions using Clang’s expression parser.
- Customise the presentation of complex data types with variable formatters and synthetic children.
- Extend the debugger with Python scripts, custom commands and programmable breakpoint actions.
- Attach to running processes, examine core dumps and debug remote targets.
- Integrate with development environments through the Debug Adapter Protocol.
Website: lldb.llvm.org
Support:
Developer: The LLDB Team
License: Apache License 2.0 with LLVM exceptions
LLDB is written in C++. Learn C++ with our recommended free books and free tutorials.
Related Software
| Debuggers | |
|---|---|
| LLDB | Next generation, high-performance debugger |
| Ghidra | Software reverse engineering framework |
| Delve | Source level debugger for the Go programming language |
| GDB | The GNU Debugger |
| Valgrind | A memory debugger and profiler |
| Radare2 | Portable reversing framework |
| BugStalker | Rust debugger |
| Xdebug | Extension for PHP to aid debugging and development |
| Seer | GUI frontend to GDB |
| iaito | Graphical interface for radare2 |
| KDbg | Graphical user interface to GDB |
| strace | Diagnostic, debugging and instructional userspace utility |
| rr | Record-and-replay debugger |
| gf | Lightweight GDB interface with source, stack and memory views |
| drgn | Programmable debugger that puts scripting at the centre |
| cgdb | Lightweight console frontend to the GNU debugger |
| PuDB | Console-based visual debugger for Python |
| nnd | Partially inspired by RemedyBG |
| bashdb | Source-code debugger for bash; follows the GDB command syntax |
| PINCE | Memory scanning, process manipulation and reverse engineering |
| edb | Low-level debugging with disassembly and register inspection |
| Sysprof | Profile an application or entire system |
| crash | Linux kernel crash analysis utility |
Read our verdict in the software roundup.
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