Function outzone

zic.c:3409–3767

	if (compat < c)
		compat = c;
	len += strlen(result + len);
	result[len++] = ',';
	c = stringrule(result + len, stdrp, dstrp->r_save, stdzp->z_stdoff);
	if (c < 0) {
		result[0] = '\0';
		return -1;
	}
	if (compat < c)
		compat = c;
	return compat;
}

static void
outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
{
	register ptrdiff_t		i, j;
	register zic_t			starttime, untiltime;
	register bool			startttisstd;
	register bool			startttisut;
	register char *			startbuf;
	register char *			ab;
	register char *			envvar;
	register int			max_abbr_len;
	register int			max_envvar_len;
	register int			compat;
	register bool			do_extend;
	register char			version;
	zic_t nonTZlimtime = ZIC_MIN;
	int nonTZlimtype = -1;
	zic_t max_year0;
	int defaulttype = -1;
	int max_stringoffset_len = sizeof "-167:59:59" - 1;
	int max_comma_stringrule_len = (sizeof ",M12.5.6/" - 1
					+ max_stringoffset_len);

	check_for_signal();

	/* This cannot overflow; see FORMAT_LEN_GROWTH_BOUND.  */
	max_abbr_len = 2 + max_format_len + max_abbrvar_len;
	max_envvar_len = 2 * (max_abbr_len + max_stringoffset_len
			      + max_comma_stringrule_len);

	startbuf = xmalloc(max_abbr_len + 1);
	ab = xmalloc(max_abbr_len + 1);
	envvar = xmalloc(max_envvar_len + 1);
	INITIALIZE(untiltime);
	INITIALIZE(starttime);
	/*
	** Now. . .finally. . .generate some useful data!
	*/
	timecnt = 0;
	typecnt = 0;
	charcnt = 0;
	/*
	** Thanks to Earl Chew
	** for noting the need to unconditionally initialize startttisstd.
	*/
	startttisstd = false;