server/util.c:1122: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned64 by call to `ap_cfg_getline_core`.

server/util.c:1101:1: Parameter `vb->avail`
1099. }
1100. 
1101. AP_DECLARE(apr_status_t) ap_varbuf_cfg_getline(struct ap_varbuf *vb,
      ^
1102.                                                ap_configfile_t *cfp,
1103.                                                apr_size_t max_len)

server/util.c:1122:14: Call
1120. 
1121.     for (;;) {
1122.         rc = ap_cfg_getline_core(vb->buf, vb->avail, vb->strlen, cfp);
                   ^
1123.         if (rc == APR_ENOSPC || rc == APR_SUCCESS)
1124.             vb->strlen += strlen(vb->buf + vb->strlen);

server/util.c:973:1: <LHS trace>
971. /* Read one line from open ap_configfile_t, strip LF, increase line number */
972. /* If custom handler does not define a getstr() function, read char by char */
973. static apr_status_t ap_cfg_getline_core(char *buf, apr_size_t bufsize,
     ^
974.                                         apr_size_t offset, ap_configfile_t *cfp)
975. {

server/util.c:973:1: Parameter `bufsize`
  971. /* Read one line from open ap_configfile_t, strip LF, increase line number */
  972. /* If custom handler does not define a getstr() function, read char by char */
  973. static apr_status_t ap_cfg_getline_core(char *buf, apr_size_t bufsize,
       ^
  974.                                         apr_size_t offset, ap_configfile_t *cfp)
  975. {

server/util.c:1020:22: Binary operation: ([0, +oo] - 1):unsigned64 by call to `ap_cfg_getline_core` 
  1018.                 }
  1019.             }
  1020.             else if (cp - buf >= bufsize - 1) {
                             ^
  1021.                 return APR_ENOSPC;
  1022.             }
