char *buf = XMALLOCN(char, len);
res = dispatch_snprintf(buf, len, fmt, occ->lc_arg_type, val);
res = lc_appendable_snadd(app, buf, res);
char *buf = XMALLOCN(char, len);
res = dispatch_snprintf(buf, len, fmt, occ->lc_arg_type, val);
res = lc_appendable_snadd(app, buf, res);