DIAGTOOL(1)

📦
version 19.1.7 · 6 versions
, in fedora 43

💖 DIAGTOOL(1) — the clang diagnostics tool, bestie edition 💖

okay so picture this: it's page 1 of the manual, the source is Clang, and the whole vibe is "let's actually figure out what clang's diagnostics are doing." welcome to diagtool. 🎀

✨ NAME ✨

diagtool — the clang diagnostics tool. that's it, that's the name, short and iconic. 👑

🌸 SYNOPSIS 🌸

diagtool command [args]

🦋 DESCRIPTION 🦋

diagtool is literally a combination of four tools for dealing with diagnostics in clang. four. a whole squad. 🫶

💅 SUBCOMMANDS 💅

diagtool is separated into several subcommands, and each one is tailored to a different purpose (main character energy, each of them). here's a lil summary of every command, and the deets come in the sections right after. ✨

  • find-diagnostic-id — print the id of the given diagnostic. 🔍
  • list-warnings — list warnings and their corresponding flags. 📋
  • show-enabled — show which warnings are enabled for a given command line. ✅
  • tree — show warning flags in a tree view. 🌳

🍓 find-diagnostic-id 🍓

diagtool find-diagnostic-id diagnostic-name

🌈 list-warnings 🌈

diagtool list-warnings

💜 show-enabled 💜

diagtool show-enabled [options] filename ...

🧚 tree 🧚

diagtool tree [diagnostic-group]

⭐ AUTHOR ⭐

maintained by the Clang / LLVM Team (<http://clang.llvm.org>). they're keeping the lights on, no cap. 🙏

2007-2026, The Clang Team. periodt. 💖

and that's the whole page, bestie — Clang, version 19, dated Mar 11, 2026, and it's DIAGTOOL(1) all the way down. go forth and vibe check ur diagnostics ✨💅🦋

📦 where this page comes from