intro(3attr) — Linux manual page

NAME \| SYNOPSIS \| DESCRIPTION \| VERSIONS \| STANDARDS \| HISTORY \| COLOPHON

intro(3attr)                                                 intro(3attr)

NAME top

       intro - C/C++ attributes

SYNOPSIS top

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

DESCRIPTION top

       Attributes modify the properties of a source construct, such as a
       type, a variable, or a function.

       The standard syntax allows specifying a vendor for non-standard
       attributes.

VERSIONS top

       C and C++ dialects have provided various forms of attributes
       before standardization.

       __attribute__((attr))
              This is the GNU syntax for attributes.  It is supported by
              both GCC and Clang.

       __declspec(attr)
              This is the MSVC syntax for attributes.  It is supported by
              Clang.

STANDARDS top

       C23, C++23.

HISTORY top

       [[attr]]
       [[vendor::attr]]
              C23, C++11.

       [[attr]]
       [[gnu::attr]]
              gcc 10, g++ 9, clang 9, clang++ 9.

       __attribute__((attr))
              gcc, g++, clang, clang++.

       __declspec(attr)
              clang, clang++.

COLOPHON top

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Linux man-pages 6.15            2025-06-28                   intro(3attr)