src/http/ngx_http_upstream.c:812: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request`.

src/http/ngx_http_upstream.c:807:9: Call
805. 
806.     if (ctx->state) {
807.         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
             ^
808.                       "%V could not be resolved (%i: %s)",
809.                       &ctx->name, ctx->state,

src/core/ngx_log.c:75:1: Parameter `log->file->fd`
  73. #if (NGX_HAVE_VARIADIC_MACROS)
  74. 
  75. void
      ^
  76. ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err,
  77.     const char *fmt, ...)

src/http/ngx_http_upstream.c:812:9: Call
810.                       ngx_resolver_strerror(ctx->state));
811. 
812.         ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
             ^
813.         return;
814.     }

src/http/ngx_http_upstream.c:2843:1: Parameter `r->main->count`
  2841. 
  2842. 
  2843. static void
        ^
  2844. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
  2845.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:2952:5: Call
  2950.     }
  2951. 
  2952.     ngx_http_finalize_request(r, rc);
            ^
  2953. }
  2954. 

src/http/ngx_http_request.c:1847:1: Parameter `r->main->count`
    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:2017:9: Call
    2015.     }
    2016. 
    2017.     if (ngx_http_post_action(r) == NGX_OK) {
                  ^
    2018.         return;
    2019.     }

src/http/ngx_http_request.c:2846:1: <LHS trace>
2844. 
2845. 
2846. static ngx_int_t
      ^
2847. ngx_http_post_action(ngx_http_request_t *r)
2848. {

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

src/http/ngx_http_request.c:2860:5: Binary operation: ([0, +oo] - 1):unsigned32 by call to `ngx_http_upstream_finalize_request` 
      2858.                    "post action: \"%V\"", &clcf->post_action);
      2859. 
      2860.     r->main->count--;
                ^
      2861. 
      2862.     r->http_version = NGX_HTTP_VERSION_9;
