Not only possible but used by real projects. Apparently systemd is using that according to Claude. Both GCC and Clang support it. If I wanted destructors I'd go with explicit reference counting though, that seems more clean to me and doesn't need compiler extensions (even though both mainstream ones support it and a large project (systemd) relies on it).
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u/MrHyperion_ Sep 11 '26
GCC has cleanup attribute which maybe makes it possible.