src/http/ngx_http_request.c:697: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `ngx_http_read_request_header`.

src/http/ngx_http_request.c:704:14: Unknown value from: ngx_http_parse_request_line
702.         }
703. 
704.         rc = ngx_http_parse_request_line(r, r->header_in);
                  ^
705. 
706.         if (rc == NGX_OK) {

src/http/ngx_http_request.c:697:17: Call
695. 
696.         if (rc == NGX_AGAIN) {
697.             n = ngx_http_read_request_header(r);
                     ^
698. 
699.             if (n == NGX_AGAIN || n == NGX_ERROR) {

src/http/ngx_http_request.c:1064:1: Parameter `r->uri_changes`
  1062. 
  1063. 
  1064. static ssize_t
        ^
  1065. ngx_http_read_request_header(ngx_http_request_t *r)
  1066. {

src/http/ngx_http_request.c:1111:9: Call
  1109.         c->log->action = "reading client request headers";
  1110. 
  1111.         ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
                ^
  1112.         return NGX_ERROR;
  1113.     }

src/http/ngx_http_request.c:1831:1: Parameter `r->uri_changes`
    1829. 
    1830. 
    1831. void
          ^
    1832. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    1833. {

src/http/ngx_http_request.c:1870:13: Call
    1868.         || c->error)
    1869.     {
    1870.         if (ngx_http_post_action(r) == NGX_OK) {
                      ^
    1871.             return;
    1872.         }

src/http/ngx_http_request.c:2809:1: Parameter `r->uri_changes`
      2807. 
      2808. 
      2809. static ngx_int_t
            ^
      2810. ngx_http_post_action(ngx_http_request_t *r)
      2811. {

src/http/ngx_http_request.c:2832:9: Call
      2830. 
      2831.     if (clcf->post_action.data[0] == '/') {
      2832.         ngx_http_internal_redirect(r, &clcf->post_action, NULL);
                    ^
      2833. 
      2834.     } else {

src/http/ngx_http_core_module.c:2163:1: <LHS trace>
2161. 
2162. 
2163. ngx_int_t
      ^
2164. ngx_http_internal_redirect(ngx_http_request_t *r,
2165.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2163:1: Parameter `r->uri_changes`
        2161. 
        2162. 
        2163. ngx_int_t
              ^
        2164. ngx_http_internal_redirect(ngx_http_request_t *r,
        2165.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2169:5: Binary operation: ([0, +oo] - 1):unsigned32 by call to `ngx_http_read_request_header` 
        2167.     ngx_http_core_srv_conf_t  *cscf;
        2168. 
        2169.     r->uri_changes--;
                  ^
        2170. 
        2171.     if (r->uri_changes == 0) {
