src/http/ngx_http_request.c:1064: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `ngx_http_read_request_header`.

src/http/ngx_http_request.c:1071:14: Unknown value from: ngx_http_parse_header_line
1069.         }
1070. 
1071.         rc = ngx_http_parse_header_line(r, r->header_in,
                   ^
1072.                                         cscf->underscores_in_headers);
1073. 

src/http/ngx_http_request.c:1064:17: Call
1062.             }
1063. 
1064.             n = ngx_http_read_request_header(r);
                      ^
1065. 
1066.             if (n == NGX_AGAIN || n == NGX_ERROR) {

src/http/ngx_http_request.c:1175:1: Parameter `r->uri_changes`
  1173. 
  1174. 
  1175. static ssize_t
        ^
  1176. ngx_http_read_request_header(ngx_http_request_t *r)
  1177. {

src/http/ngx_http_request.c:1222:9: Call
  1220.         c->log->action = "reading client request headers";
  1221. 
  1222.         ngx_http_finalize_request(r, NGX_HTTP_BAD_REQUEST);
                ^
  1223.         return NGX_ERROR;
  1224.     }

src/http/ngx_http_request.c:2010:1: Parameter `r->uri_changes`
    2008. 
    2009. 
    2010. void
          ^
    2011. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
    2012. {

src/http/ngx_http_request.c:2048:13: Call
    2046.         || c->error)
    2047.     {
    2048.         if (ngx_http_post_action(r) == NGX_OK) {
                      ^
    2049.             return;
    2050.         }

src/http/ngx_http_request.c:3020:1: Parameter `r->uri_changes`
      3018. 
      3019. 
      3020. static ngx_int_t
            ^
      3021. ngx_http_post_action(ngx_http_request_t *r)
      3022. {

src/http/ngx_http_request.c:3047:9: Call
      3045. 
      3046.     if (clcf->post_action.data[0] == '/') {
      3047.         ngx_http_internal_redirect(r, &clcf->post_action, NULL);
                    ^
      3048. 
      3049.     } else {

src/http/ngx_http_core_module.c:2540:1: <LHS trace>
2538. 
2539. 
2540. ngx_int_t
      ^
2541. ngx_http_internal_redirect(ngx_http_request_t *r,
2542.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2540:1: Parameter `r->uri_changes`
        2538. 
        2539. 
        2540. ngx_int_t
              ^
        2541. ngx_http_internal_redirect(ngx_http_request_t *r,
        2542.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2546:5: Binary operation: ([0, +oo] - 1):unsigned32 by call to `ngx_http_read_request_header` 
        2544.     ngx_http_core_srv_conf_t  *cscf;
        2545. 
        2546.     r->uri_changes--;
                  ^
        2547. 
        2548.     if (r->uri_changes == 0) {
