src/http/ngx_http_core_module.c:1071: error: Integer Overflow L1
  (0 - 1):unsigned32 by call to `ngx_http_finalize_request`.

src/http/ngx_http_core_module.c:1040:1: Parameter `r->uri_changes`
1038. 
1039. 
1040. ngx_int_t
      ^
1041. ngx_http_core_post_rewrite_phase(ngx_http_request_t *r,
1042.     ngx_http_phase_handler_t *ph)

src/http/ngx_http_core_module.c:1064:5: Assignment
1062.      */
1063. 
1064.     r->uri_changes--;
          ^
1065. 
1066.     if (r->uri_changes == 0) {

src/http/ngx_http_core_module.c:1071:9: Call
1069.                       "while processing \"%V\"", &r->uri);
1070. 
1071.         ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
              ^
1072.         return NGX_OK;
1073.     }

src/http/ngx_http_request.c:2249:1: Parameter `r->uri_changes`
  2247. 
  2248. 
  2249. void
        ^
  2250. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
  2251. {

src/http/ngx_http_request.c:2416:9: Call
  2414.     }
  2415. 
  2416.     if (ngx_http_post_action(r) == NGX_OK) {
                ^
  2417.         return;
  2418.     }

src/http/ngx_http_request.c:3340:1: Parameter `r->uri_changes`
    3338. 
    3339. 
    3340. static ngx_int_t
          ^
    3341. ngx_http_post_action(ngx_http_request_t *r)
    3342. {

src/http/ngx_http_request.c:3367:9: Call
    3365. 
    3366.     if (clcf->post_action.data[0] == '/') {
    3367.         ngx_http_internal_redirect(r, &clcf->post_action, NULL);
                  ^
    3368. 
    3369.     } else {

src/http/ngx_http_core_module.c:2581:1: <LHS trace>
2579. 
2580. 
2581. ngx_int_t
      ^
2582. ngx_http_internal_redirect(ngx_http_request_t *r,
2583.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2581:1: Parameter `r->uri_changes`
      2579. 
      2580. 
      2581. ngx_int_t
            ^
      2582. ngx_http_internal_redirect(ngx_http_request_t *r,
      2583.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2587:5: Binary operation: (0 - 1):unsigned32 by call to `ngx_http_finalize_request` 
      2585.     ngx_http_core_srv_conf_t  *cscf;
      2586. 
      2587.     r->uri_changes--;
                ^
      2588. 
      2589.     if (r->uri_changes == 0) {
