[[ ]] attributes were added in C++11 and later C23. There are 7 standard(C32) attributes but GCC has hundreds of them. https://en.cppreference.com/w/c/language

[[ ]] attributes were added in C++11 and later C23. There are 7 standard(C32) attributes but GCC has hundreds of them. https://en.cppreference.com/w/c/language/attributes.html https://en.cppreference.com/w/c/language/attributes.html https://en.cppreference.com/w/cpp/language/attributes.html https://en.cppreference.com/w/cpp/language/attributes.html https://gcc.gnu.org/onlinedocs/gcc/Attributes.html https://gcc.gnu.org/onlinedocs/gcc/Attributes.html https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-cleanup-variable-attribute https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attribute...