zschan
volatile struct zschan *zc = zs_conschan;
volatile struct zschan *zc;
struct zschan zs_chan_b;
struct zschan zs_chan_a;
void zs_putc(volatile struct zschan *, int);
int zs_getc(volatile struct zschan *);
zs_getc(volatile struct zschan *zc)
zs_putc(volatile struct zschan *zc, int c)
register volatile struct zschan *zc = zs_conschan;
register volatile struct zschan *zc = zs_conschan;
struct zschan *zc;
volatile struct zschan *zc = zs_conschan_get;
volatile struct zschan *zc = arg;
volatile struct zschan *zc = arg;
struct zschan zs_chan_b;
struct zschan zs_chan_a;