sig_atomic_t
static sig_atomic_t nstats; /* do we need to output stats */
static sig_atomic_t signalled;
static sig_atomic_t hadcont; /* Saw continue signal */
static volatile sig_atomic_t signal_delivered;
static sig_atomic_t got_signal;
using std::sig_atomic_t;
static volatile sig_atomic_t jumpok = 0;
static volatile sig_atomic_t gl_pending_signal = -1;
volatile sig_atomic_t sigcount = 0;