for(i=0;i<NSIG;i++) {
if (sigismember(&blockable_sigset, i) && !sigismember(¤t, i))
lose("blockable signal %d not blocked",i);
for(i=0;i<NSIG;i++) {
if (sigismember(&blockable_sigset, i) && !sigismember(¤t, i))
lose("blockable signal %d not blocked",i);