src/http/ngx_http_core_module.c:1004: error: Integer Overflow L1
  (0 - 1):unsigned32 by call to `ngx_http_finalize_request`.

src/http/ngx_http_core_module.c:973:1: Parameter `r->uri_changes`
971. 
972. 
973. ngx_int_t
     ^
974. ngx_http_core_post_rewrite_phase(ngx_http_request_t *r,
975.     ngx_http_phase_handler_t *ph)

src/http/ngx_http_core_module.c:997:5: Assignment
995.      */
996. 
997.     r->uri_changes--;
         ^
998. 
999.     if (r->uri_changes == 0) {

src/http/ngx_http_core_module.c:1004:9: Call
1002.                       "while processing \"%V\"", &r->uri);
1003. 
1004.         ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
              ^
1005.         return NGX_OK;
1006.     }

src/http/ngx_http_request.c:1847:1: Parameter `r->uri_changes`
  1845. 
  1846. 
  1847. void
        ^
  1848. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
  1849. {

src/http/ngx_http_request.c:1886:13: Call
  1884.         || c->error)
  1885.     {
  1886.         if (ngx_http_post_action(r) == NGX_OK) {
                    ^
  1887.             return;
  1888.         }

src/http/ngx_http_request.c:2846:1: Parameter `r->uri_changes`
    2844. 
    2845. 
    2846. static ngx_int_t
          ^
    2847. ngx_http_post_action(ngx_http_request_t *r)
    2848. {

src/http/ngx_http_request.c:2869:9: Call
    2867. 
    2868.     if (clcf->post_action.data[0] == '/') {
    2869.         ngx_http_internal_redirect(r, &clcf->post_action, NULL);
                  ^
    2870. 
    2871.     } else {

src/http/ngx_http_core_module.c:2172:1: <LHS trace>
2170. 
2171. 
2172. ngx_int_t
      ^
2173. ngx_http_internal_redirect(ngx_http_request_t *r,
2174.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2172:1: Parameter `r->uri_changes`
      2170. 
      2171. 
      2172. ngx_int_t
            ^
      2173. ngx_http_internal_redirect(ngx_http_request_t *r,
      2174.     ngx_str_t *uri, ngx_str_t *args)

src/http/ngx_http_core_module.c:2178:5: Binary operation: (0 - 1):unsigned32 by call to `ngx_http_finalize_request` 
      2176.     ngx_http_core_srv_conf_t  *cscf;
      2177. 
      2178.     r->uri_changes--;
                ^
      2179. 
      2180.     if (r->uri_changes == 0) {
