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Mar 8, 2026 at 22:03
7
Anthropic used Claude to write a C compiler in Rust (CCC). I've really enjoyed following the discussion. The initial post shows how they wrote the harness with GCC as an oracle and a prompt specifying a design using SSA. The author has clear domain expertise. https://www.anthropic.com/engineering/building-c-compiler

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Apr 20, 2026 at 20:32
3
LLMs are surprisingly good at reducing crash samples. I've had success with "this project crashes my static analysis tool with the following command, try to shrink the repro whilst preserving the crash. Commit each smaller version to a branch".
May 9, 2025 at 22:42
71
Further tinkering with diagnostics, following feedback! * Two lines of context above and below now. * The caret is included in the line below where possible. * Syntax highlighting of keywords. I kinda feel that smart context sizing would be better. What do you think so far?
PhotoPhoto
Mar 11, 2025 at 15:21
22
Today I learnt that you can mix HTML inline in markdown! For example, the following is valid. Foo <hr/> I'd assumed that you needed HTML separately, like ``` blocks, but no: https://spec.commonmark.org/0.31.2/#raw-html Admittedly HTML is very restricted on most sites, but it's helpful for SSGs.
CommonMark Spec