4 ms·

Sounds like you're trying to emulate the "cleanup" GCC variable attribute: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html https://gcc.gnu.o

Sounds like you're trying to emulate the "cleanup" GCC variable attribute: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attribute... Example use: https://github.com/FRRouting/frr/blob/master/lib/frr_pthread.h#L218-L264 https://github.com/FRRouting/frr/blob/master/lib/frr_pthread... (FRR requires a GCC/clang compatible compiler, so no fallback/workaround.)

CameronNemo 7y ago
LXC also uses this attribute.
loeg 7y ago
GCC attribute cleanup is so much harder to misuse than some hodgepodge macro construction like this. If you're a C developer, it is by far the superior option. Clang supports it, of course.
- rwmj 7y ago
  It's also used in several important big Linux programs so it's unlikely to be going away. There have been efforts to get the mechanism added to the next C standard too.
  - loeg 7y ago
    Re: going away — has GCC ever removed any relatively common attribute in the past? They basically don't ever, to my knowledge. They haven't removed nested functions, for example, which would probably be a good idea. (To your point, though: important Linux programs like GRUB use nested functions.)