sigwinch
void sigwinch(int);
sigwinch(0);
sigwinch(0);
(void) lsignal(SIGWINCH, sigwinch);
(void) signal(SIGWINCH, sigwinch);
(void) signal(SIGWINCH, sigwinch);
static void sigwinch(int);
cl_ssize(SCR *sp, int sigwinch, size_t *rowp, size_t *colp, int *changedp)
if (sigwinch) {