It’s not standardized, but if you’re using gcc, you can use the cleanup attribute for this: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html h

It’s not standardized, but if you’re using gcc, you can use the cleanup attribute for this: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attribute... IIRC clang implements it as well, but I wasn’t able to find a reference to it in their docs.