4 * sigsetjmp() is a macro, by necessity (it's either that or write
5 * it in assembly), but siglongjmp() is a normal function.
11 __noreturn siglongjmp(sigjmp_buf buf, int retval)
13 sigprocmask(SIG_SETMASK, &buf->__sigs, NULL);
14 longjmp(buf->__jmpbuf, retval);