DIAGTOOL(1)

💖 DIAGTOOL 💖

okay so bestie, welcome to diagtool — it's the clang diagnostics tool, from the Clang manual, and it is lowkey four tools in a trench coat. let's get into it 🫶

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✨ SYNOPSIS ✨

diagtool command [args]

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🌸 DESCRIPTION 🌸

diagtool is literally a combination of four tools for dealing with diagnostics in clang. four. count 'em. not three, not five. four. iconic behavior honestly 💅

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🦋 SUBCOMMANDS 🦋

so diagtool is split up into several subcommands, and each one is tailored to a different purpose. here's the quick rundown of each, and then the sections after this go deeper. no cap. ✨

• 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.

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🔍 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]

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👑 AUTHOR 👑

maintained by the Clang / LLVM Team (<http://clang.llvm.org>). yeah, they're the ones keeping this whole thing alive, periodt. 💜

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🎀 COPYRIGHT 🎀

2007-2026, The Clang Team

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okay that's the whole page bestie, you ate that. one last thing before you go — this was the diagtool page, page 21, dated Jul 22, 2026, from the Clang manual. mwah, go forth and debug 🦋💖✨