#define wcscmp strcmp
#define wcscpy strcpy
#endif
#define TZ_INIT_MARKER	((WCHAR *) INT2PTR(-1))

typedef struct ClockTzStatic {
    WCHAR *was;			/* Previous value of TZ. */
#if TCL_MAJOR_VERSION > 8
    long long lastRefresh;	/* Used for latency before next refresh. */
#else
    long lastRefresh;		/* Used for latency before next refresh. */
#endif
    size_t epoch;		/* Epoch, signals that TZ changed. */
    size_t envEpoch;		/* Last env epoch, for faster signaling,
				 * that TZ changed via TCL */
} ClockTzStatic;
static ClockTzStatic tz = {	/* Global timezone info; protected by
				 * clockMutex.*/
    TZ_INIT_MARKER, 0, 0, 0