src/http/ngx_http_core_module.c:1365: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned64 by call to `ngx_http_set_exten`.

src/http/ngx_http_core_module.c:1161:1: Parameter `r->uri.len`
1159. 
1160. 
1161. ngx_int_t
      ^
1162. ngx_http_core_try_files_phase(ngx_http_request_t *r,
1163.     ngx_http_phase_handler_t *ph)

src/http/ngx_http_core_module.c:1365:9: Call
1363.         }
1364. 
1365.         ngx_http_set_exten(r);
              ^
1366. 
1367.         ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,

src/http/ngx_http_core_module.c:1776:1: <LHS trace>
1774. 
1775. 
1776. void
      ^
1777. ngx_http_set_exten(ngx_http_request_t *r)
1778. {

src/http/ngx_http_core_module.c:1776:1: Parameter `r->uri.len`
  1774. 
  1775. 
  1776. void
        ^
  1777. ngx_http_set_exten(ngx_http_request_t *r)
  1778. {

src/http/ngx_http_core_module.c:1783:10: Binary operation: ([0, +oo] - 1):unsigned64 by call to `ngx_http_set_exten` 
  1781.     ngx_str_null(&r->exten);
  1782. 
  1783.     for (i = r->uri.len - 1; i > 1; i--) {
                 ^
  1784.         if (r->uri.data[i] == '.' && r->uri.data[i - 1] != '/') {
  1785. 
