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

(hwisnu.bearblog.dev)
271 points mithcs | 1 comments | 17 Nov 25 10:40 UTC | HN request time: 0s | source
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fuhsnn ◴[17 Nov 25 13:13 UTC] No.45953265[source]▶
> 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

replies(1): >>45953601 #
cassepipe ◴[17 Nov 25 14:00 UTC] No.45953601[source]▶
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 ?
replies(4): >>45953886 #>>45954031 #>>45954617 #>>45966700 #
1. SAI_Peregrinus ◴[17 Nov 25 14:31 UTC] No.45953886[source]▶
The `[[attribute]]` syntax is new, the builtin ones in C23 are `[[deprecated]]`, `[[fallthrough]]`, `[[maybe_unused]]`, `[[nodiscard]]`, `[[noreturn]]`, `[[reproducible]]`, and `[[unsequenced]]`.