intro(3attr)

✨ intro — C/C++ attributes ✨

okay bestie, welcome to intro(3attr) 💖 this is the lil landing page for attributes in C and C++, and ngl it's short but it's giving foundational. let's get into it 🫶

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🌸 NAME 🌸

intro — C/C++ attributes. periodt.

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🎀 SYNOPSIS 🎀

[[attr]]
[[vendor::attr]]

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💅 DESCRIPTION 💅

so, attributes? they modify the properties of a source construct ✨ — think a type, or a variable, or a function. like a lil sticker you slap on your code that says "hey compiler, here's some extra tea about this thing" 🍓

and the standard syntax? it also lets you name a vendor for non-standard attributes, so you can be like [[vendor::attr]] and everyone knows exactly whose attic this attribute crawled out of 💀

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🌈 VERSIONS 🌈

ok so before anyone standardized attributes, C and C++ dialects were just out here doing their own thing. the lore:

• __attribute__((attr)) — this is the GNU syntax for attributes. it's supported by both GCC and Clang.
• __declspec(attr) — this is the MSVC syntax for attributes. it's supported by Clang.

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⭐ STANDARDS ⭐

C23, C++23. iconic behavior, honestly 👑

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💜 HISTORY 💜

the timeline of when everything showed up, in chronological-ish order of the vibes:

• [[attr]] [[vendor::attr]] → C23, C++11. 🦋
• [[attr]] [[gnu::attr]] → gcc 10, g++ 9, clang 9, clang++ 9. ✨
• __attribute__((attr)) → gcc, g++, clang, clang++. (the originals, no cap 🧚)
• __declspec(attr) → clang, clang++. 💀

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bestie reminder: that first one lists two synopsis lines under two version sets — don't let your eyes skip the second line of each pair, iykyk 🙈

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and that's the whole page, fr fr 💖 this was Linux man-pages version 6.20, dated 2025-06-28 — shoutout to the man-pages girlies for keeping the docs immaculate, we're obsessed 😭🎀💜