Re:A Defer Mechanism for C
by josephcsible on Tuesday December 15, 2020 @08:48AM
(#25430229)
Are you talking about this? https://gcc.gnu.org/onlinedocs/gcc/Labels-as-Values.html It's a GNU extension, not part of standard C at all.
You can with a goto expression and a label address available - though the behavior is undefined in C, so bets are off.
And you can with longjump/setjump more explicitly.