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[Libevent-users] patch for libevent-2.1.8 to get past errors about void functions doing "return"

To: libevent-users@xxxxxxxxxxxxx
Subject: [Libevent-users] patch for libevent-2.1.8 to get past errors about void functions doing "return"
From: Dennis Clarke <dclarke@xxxxxxxxxxxxx>
Date: Mon, 18 Jun 2018 17:33:28 +0100
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I can only assume that gcc ignores these.

Regardless :

*** ./http-internal.h_backup    Tue Nov  1 15:34:53 2016
--- ./http-internal.h   Mon Jun 18 15:16:32 2018
***************
*** 182,193 ****
  /* connects if necessary */
  int evhttp_connection_connect_(struct evhttp_connection *);

! enum evhttp_request_error;
  /* notifies the current request that it failed; resets connection */
  void evhttp_connection_fail_(struct evhttp_connection *,
      enum evhttp_request_error error);

! enum message_read_status;

enum message_read_status evhttp_parse_firstline_(structevhttp_request *, struct evbuffer*);enum message_read_status evhttp_parse_headers_(struct evhttp_request*, struct evbuffer*);

--- 182,193 ----
  /* connects if necessary */
  int evhttp_connection_connect_(struct evhttp_connection *);

! enum evhttp_request_error; /* warning: useless declaration */
  /* notifies the current request that it failed; resets connection */
  void evhttp_connection_fail_(struct evhttp_connection *,
      enum evhttp_request_error error);

! enum message_read_status; /* warning: useless declaration */

enum message_read_status evhttp_parse_firstline_(structevhttp_request *, struct evbuffer*);enum message_read_status evhttp_parse_headers_(struct evhttp_request*, struct evbuffer*);

*** ./test/regress_dns.c_backup Sun Jan 22 15:26:24 2017
--- ./test/regress_dns.c        Mon Jun 18 15:13:56 2018
***************
*** 615,626 ****
  static void
  dns_search_test(void *arg)
  {
!       return dns_search_test_impl(arg, 0);
  }
  static void
  dns_search_lower_test(void *arg)
  {
!       return dns_search_test_impl(arg, 1);
  }

  static int request_count = 0;
--- 615,626 ----
  static void
  dns_search_test(void *arg)
  {
!       dns_search_test_impl(arg, 0);
  }
  static void
  dns_search_lower_test(void *arg)
  {
!       dns_search_test_impl(arg, 1);
  }

  static int request_count = 0;
*** ./test/regress_http.c_backup        Sun Jan 22 15:26:24 2017
--- ./test/regress_http.c       Mon Jun 18 15:19:35 2018
***************
*** 546,552 ****
                bufferevent_free(bev);
  }
  static void http_basic_test(void *arg)
! { return http_basic_test_impl(arg, 0); }


  static void
--- 546,552 ----
                bufferevent_free(bev);
  }
  static void http_basic_test(void *arg)
! { http_basic_test_impl(arg, 0); }


  static void
***************
*** 3327,3333 ****
                evhttp_free(http);
  }
  static void http_chunk_out_test(void *arg)
! { return http_chunk_out_test_impl(arg, 0); }

  static void
  http_stream_out_test_impl(void *arg, int ssl)
--- 3327,3333 ----
                evhttp_free(http);
  }
  static void http_chunk_out_test(void *arg)
! { http_chunk_out_test_impl(arg, 0); }

  static void
  http_stream_out_test_impl(void *arg, int ssl)
***************
*** 3373,3379 ****
                evhttp_free(http);
  }
  static void http_stream_out_test(void *arg)
! { return http_stream_out_test_impl(arg, 0); }

  static void
  http_stream_in_chunk(struct evhttp_request *req, void *arg)
--- 3373,3379 ----
                evhttp_free(http);
  }
  static void http_stream_out_test(void *arg)
! { http_stream_out_test_impl(arg, 0); }

  static void
  http_stream_in_chunk(struct evhttp_request *req, void *arg)
***************
*** 3569,3575 ****
        ;
  }
  static void http_connection_fail_test(void *arg)
! { return http_connection_fail_test_impl(arg, 0); }

  static void
  http_connection_retry_done(struct evhttp_request *req, void *arg)
--- 3569,3575 ----
        ;
  }
  static void http_connection_fail_test(void *arg)
! { http_connection_fail_test_impl(arg, 0); }

  static void
  http_connection_retry_done(struct evhttp_request *req, void *arg)
***************
*** 3641,3647 ****
                evhttp_free(http);
  }
  static void http_simple_test(void *arg)
! { return http_simple_test_impl(arg, 0, 0); }

  static void

http_connection_retry_test_basic(void *arg, const char *addr, structevdns_base *dns_base, int ssl)

--- 3641,3647 ----
                evhttp_free(http);
  }
  static void http_simple_test(void *arg)
! { http_simple_test_impl(arg, 0, 0); }

  static void

http_connection_retry_test_basic(void *arg, const char *addr, structevdns_base *dns_base, int ssl)

***************
*** 3798,3813 ****

/** dnsserver will be cleaned inhttp_connection_retry_test_basic() */

  }
  static void http_connection_retry_conn_address_test(void *arg)
! { return http_connection_retry_conn_address_test_impl(arg, 0); }

  static void
  http_connection_retry_test_impl(void *arg, int ssl)
! {

! return http_connection_retry_test_basic(arg, "127.0.0.1", NULL,ssl);

! }
  static void
  http_connection_retry_test(void *arg)
! { return http_connection_retry_test_impl(arg, 0); }

  static void
  http_primitives(void *ptr)
--- 3798,3812 ----

/** dnsserver will be cleaned inhttp_connection_retry_test_basic() */

  }
  static void http_connection_retry_conn_address_test(void *arg)
! { http_connection_retry_conn_address_test_impl(arg, 0); }

  static void
  http_connection_retry_test_impl(void *arg, int ssl)
! { http_connection_retry_test_basic(arg, "127.0.0.1", NULL, ssl); }
!
  static void
  http_connection_retry_test(void *arg)
! { http_connection_retry_test_impl(arg, 0); }

  static void
  http_primitives(void *ptr)
***************
*** 4474,4480 ****
                evhttp_free(http);
  }
  static void http_write_during_read_test(void *arg)
! { return http_write_during_read_test_impl(arg, 0); }

  static void
  http_request_own_test(void *arg)
--- 4473,4479 ----
                evhttp_free(http);
  }
  static void http_write_during_read_test(void *arg)
! { http_write_during_read_test_impl(arg, 0); }

  static void
  http_request_own_test(void *arg)
***************
*** 4526,4560 ****

  #ifdef EVENT__HAVE_OPENSSL
  static void https_basic_test(void *arg)
! { return http_basic_test_impl(arg, 1); }
  static void https_filter_basic_test(void *arg)
! { return http_basic_test_impl(arg, 1 | HTTP_SSL_FILTER); }
  static void https_incomplete_test(void *arg)
  { http_incomplete_test_(arg, 0, 1); }
  static void https_incomplete_timeout_test(void *arg)
  { http_incomplete_test_(arg, 1, 1); }
  static void https_simple_test(void *arg)
! { return http_simple_test_impl(arg, 1, 0); }
  static void https_simple_dirty_test(void *arg)
! { return http_simple_test_impl(arg, 1, 1); }
  static void https_connection_retry_conn_address_test(void *arg)
! { return http_connection_retry_conn_address_test_impl(arg, 1); }
  static void https_connection_retry_test(void *arg)
! { return http_connection_retry_test_impl(arg, 1); }
  static void https_chunk_out_test(void *arg)
! { return http_chunk_out_test_impl(arg, 1); }
  static void https_filter_chunk_out_test(void *arg)
! { return http_chunk_out_test_impl(arg, 1 | HTTP_SSL_FILTER); }
  static void https_stream_out_test(void *arg)
! { return http_stream_out_test_impl(arg, 1); }
  static void https_connection_fail_test(void *arg)
! { return http_connection_fail_test_impl(arg, 1); }
  static void https_write_during_read_test(void *arg)
! { return http_write_during_read_test_impl(arg, 1); }
  static void https_connection_test(void *arg)

! { return http_connection_test_(arg, 0, "127.0.0.1", NULL, 0,AF_UNSPEC, 1); }

  static void https_persist_connection_test(void *arg)

! { return http_connection_test_(arg, 1, "127.0.0.1", NULL, 0,AF_UNSPEC, 1); }

  #endif

  struct testcase_t http_testcases[] = {
--- 4525,4559 ----

  #ifdef EVENT__HAVE_OPENSSL
  static void https_basic_test(void *arg)
! { http_basic_test_impl(arg, 1); }
  static void https_filter_basic_test(void *arg)
! { http_basic_test_impl(arg, 1 | HTTP_SSL_FILTER); }
  static void https_incomplete_test(void *arg)
  { http_incomplete_test_(arg, 0, 1); }
  static void https_incomplete_timeout_test(void *arg)
  { http_incomplete_test_(arg, 1, 1); }
  static void https_simple_test(void *arg)
! { http_simple_test_impl(arg, 1, 0); }
  static void https_simple_dirty_test(void *arg)
! { http_simple_test_impl(arg, 1, 1); }
  static void https_connection_retry_conn_address_test(void *arg)
! { http_connection_retry_conn_address_test_impl(arg, 1); }
  static void https_connection_retry_test(void *arg)
! { http_connection_retry_test_impl(arg, 1); }
  static void https_chunk_out_test(void *arg)
! { http_chunk_out_test_impl(arg, 1); }
  static void https_filter_chunk_out_test(void *arg)
! { http_chunk_out_test_impl(arg, 1 | HTTP_SSL_FILTER); }
  static void https_stream_out_test(void *arg)
! { http_stream_out_test_impl(arg, 1); }
  static void https_connection_fail_test(void *arg)
! { http_connection_fail_test_impl(arg, 1); }
  static void https_write_during_read_test(void *arg)
! { http_write_during_read_test_impl(arg, 1); }
  static void https_connection_test(void *arg)
! { http_connection_test_(arg, 0, "127.0.0.1", NULL, 0, AF_UNSPEC, 1); }
  static void https_persist_connection_test(void *arg)
! { http_connection_test_(arg, 1, "127.0.0.1", NULL, 0, AF_UNSPEC, 1); }
  #endif

  struct testcase_t http_testcases[] = {
***********************************************************************
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