ref: c0b8e8f30ce98acc52a8268dbb13744950d636e3
dir: /lib/std/test/sjlj.myr/
use std var st const main = { var jb st = 1 if std.setjmp(&jb) std.put("nonlocal return\n") std.exit(st) ;; st = 0 std.put("doing jmp\n") dolongjmp(&jb) std.fatal("unreachable\n") } const dolongjmp = {jb std.longjmp(jb) }