Giving C a superpower: custom header file (safe_c.h)

> C23 gave us [[cleanup]] attributes

C23 didn't introduce it, it's still a GCC extension that needs to be spelled as [[gnu::cleanup()]] https://godbolt.org/z/Gsz9hs7TE

It is surprisingly hard to find information about it, do you have any ? From what I can guess it's a new syntax but it's the feature itself is still an extension ?

[[ ]] 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/cpp/language/attributes.html

https://gcc.gnu.org/onlinedocs/gcc/Attributes.html

https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attribute...