src/http/ngx_http_upstream.c:2190: error: Integer Overflow L2
  ([0, `r->main->count` + 8] - 1):unsigned32 by call to `ngx_http_upstream_send_response`.

src/http/ngx_http_upstream.c:2047:1: Parameter `r->main->count`
2045. 
2046. 
2047. static void
      ^
2048. ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
2049. {

src/http/ngx_http_upstream.c:2185:9: Call
2183.     }
2184. 
2185.     if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
              ^
2186.         return;
2187.     }

src/http/ngx_http_upstream.c:2449:1: Parameter `r->main->count`
  2447. 
  2448. 
  2449. static ngx_int_t
        ^
  2450. ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
  2451. {

src/http/ngx_http_upstream.c:2190:9: Call
2188. 
2189.     if (!r->subrequest_in_memory) {
2190.         ngx_http_upstream_send_response(r, u);
              ^
2191.         return;
2192.     }

src/http/ngx_http_upstream.c:2669:1: Parameter `r->main->count`
  2667. 
  2668. 
  2669. static void
        ^
  2670. ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
  2671. {

src/http/ngx_http_upstream.c:2765:13: Call
  2763.             }
  2764. 
  2765.             ngx_http_upstream_process_non_buffered_downstream(r);
                    ^
  2766. 
  2767.         } else {

src/http/ngx_http_upstream.c:3281:1: Parameter `r->main->count`
    3279. 
    3280. 
    3281. static void
          ^
    3282. ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
    3283. {

src/http/ngx_http_upstream.c:3304:5: Call
    3302.     }
    3303. 
    3304.     ngx_http_upstream_process_non_buffered_request(r, 1);
              ^
    3305. }
    3306. 

src/http/ngx_http_upstream.c:3331:1: Parameter `r->main->count`
      3329. 
      3330. 
      3331. static void
            ^
      3332. ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
      3333.     ngx_uint_t do_write)

src/http/ngx_http_upstream.c:3372:21: Call
      3370.                     || (upstream->read->eof && u->length == -1))
      3371.                 {
      3372.                     ngx_http_upstream_finalize_request(r, u, 0);
                                ^
      3373.                     return;
      3374.                 }

src/http/ngx_http_upstream.c:4065:1: Parameter `r->main->count`
        4063. 
        4064. 
        4065. static void
              ^
        4066. ngx_http_upstream_finalize_request(ngx_http_request_t *r,
        4067.     ngx_http_upstream_t *u, ngx_int_t rc)

src/http/ngx_http_upstream.c:4206:9: Call
        4204. 
        4205.     if (r->header_only) {
        4206.         ngx_http_finalize_request(r, rc);
                      ^
        4207.         return;
        4208.     }

src/http/ngx_http_request.c:2257:1: Parameter `r->main->count`
          2255. 
          2256. 
          2257. void
                ^
          2258. ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
          2259. {

src/http/ngx_http_request.c:2423:9: Call
          2421.     }
          2422. 
          2423.     if (ngx_http_post_action(r) == NGX_OK) {
                        ^
          2424.         return;
          2425.     }

src/http/ngx_http_request.c:3340:1: <LHS trace>
3338. 
3339. 
3340. static ngx_int_t
      ^
3341. ngx_http_post_action(ngx_http_request_t *r)
3342. {

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

src/http/ngx_http_request.c:3358:5: Binary operation: ([0, r->main->count + 8] - 1):unsigned32 by call to `ngx_http_upstream_send_response` 
            3356.                    "post action: \"%V\"", &clcf->post_action);
            3357. 
            3358.     r->main->count--;
                      ^
            3359. 
            3360.     r->http_version = NGX_HTTP_VERSION_9;
