Show HN: I spent 6 months building a C debugger as a 17-year-old
A 17-year-old has released an open-source C debugger for x86_64 Linux, impressing many developers with its clean design, use of DWARF debug info, and mix of C and Scheme despite a relatively limited feature set. Commenters highlight how hard debuggers are to build, offer technical pointers for future enhancements, and share related tools and learning resources in low-level systems and reverse engineering. A prominent theme is whether explicitly mentioning the author’s age is helpful or distracting, raising broader points about early learning, merit, and how young programmers should present their work.
Overall reception
- Many commenters find the project highly impressive, especially given the complexity of debuggers and DWARF.
- Several note the codebase looks clean, modular, well‑commented, and more advanced than what many “senior” developers ever attempt.
- Some say it restores their faith in younger programmers and see it as a strong foundation for a future career.
Age and “17-year-old” in the title
- One major thread debates whether including the age in the title is appropriate.
- Supporters say it provides useful context, is genuinely unusual, and can inspire others; they argue that early achievement is noteworthy and should be celebrated.
- Critics find it attention-seeking or “cloying,” feel Show HN should focus on the work not the person, and point out it derails discussion toward age rather than the project.
- There’s disagreement over whether emphasizing age is helpful encouragement or subtly ageist (by implying lower expectations).
Technical scope and design
- The debugger currently targets x86_64 Linux and C, using ptrace and DWARF; several note that even partial DWARF handling is nontrivial.
- A long checklist outlines what a fully general-purpose debugger would require (multi-arch, multiple OSes, signals, threads, forks, VDSO, core dumps, other languages, etc.), emphasizing how deep the problem space is.
- The author explicitly frames the project as limited in scope and not aiming to tackle all those concerns.
- Parts of the frontend are written in Scheme; C handles low-level work. This mix is defended as playing to each language’s strengths.
- Coding style (GNU spacing) and use of emojis in output spark minor side discussions about readability and portability.
Learning path and resources
- The author attributes progress to reading books and blogs, plus having a parent in computer science.
- Commenters recommend compiler and interpreter books, online articles, YouTube channels, and blog series linked from the repo.
- Several suggest programs like Google Summer of Code, and projects like Rizin, as next steps.
Broader reflections and advice
- Multiple threads discuss early learning, “unfair advantages,” and whether starting young materially changes chances of making discoveries.
- Commenters stress curiosity, hands-on experimentation, and reading as key differentiators.
- There are suggestions to explore reverse engineering, CTFs, and to be mindful of mental health and isolation when developing strong skills at a young age.
- Meta-comments remind participants to avoid personal attacks and nitpicky “meta” arguments that overshadow the technical achievement.