Snippets for libevent 2.1.12 from Fedora x86_64

Sourced from https://kojipkgs.fedoraproject.org/packages/libevent/2.1.12/18.fc45/data/logs/x86_64/build.log.

• evutil_rand.c:56:16: warning: ignoring return value of 'arc4random' declared with attribute 'warn_unused_result' [-Wunused-result]
     56 |         (void) arc4random();
        |                ^~~~~~~~~~~~
  

• sample/le-proxy.c:116:37: warning: ‘ERR_func_error_string’ is deprecated: Since OpenSSL 3.0 [-Wdeprecated-declarations]
    116 |                                     ERR_func_error_string(err);
        |                                     ^~~~~~~~~~~~~~~~~~~~~
  

• sample/openssl_hostname_validation.c:77:27: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
     77 |         common_name_entry = X509_NAME_get_entry(X509_get_subject_name((X509 *) server_cert), common_name_loc);
        |                           ^
  

• sample/openssl_hostname_validation.c:83:26: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
     83 |         common_name_asn1 = X509_NAME_ENTRY_get_data(common_name_entry);
        |                          ^
  

• evutil.c:213:21: warning: argument 4 of type 'int[2]' with mismatched bound [-Warray-parameter=]
    213 |     evutil_socket_t fd[2])
  

• evutil.c:2004:12: warning: assignment discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
   2004 |         cp = strchr(src, '%');
        |            ^
  

• evutil.c:2535:13: warning: initializer-string for array of 'char' truncates NUL terminator but destination lacks 'nonstring' attribute (17 chars into 16 available) [-Wunterminated-string-initialization]
   2535 |             "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1";
        |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• event.c:1362:32: warning: storing the address of local variable 'ncalls' in 'ev_34(D)->ev_.ev_signal.ev_pncalls' [-Wdangling-pointer=]
   1362 |                 ev->ev_pncalls = &ncalls;
        |                 ~~~~~~~~~~~~~~~^~~~~~~~~
  

• test/regress_util.c:934:22: warning: variable ‘n’ set but not used [-Wunused-but-set-variable=]
    934 |         int i, j, k, n=0;
        |                      ^
  

• test/regress_buffer.c:130:13: warning: variable ‘n’ set but not used [-Wunused-but-set-variable=]
    130 |         int n = 0;
        |             ^
  

• test/tinytest_macros.h:116:22: warning: cast from function call of type ‘unsigned char *’ to non-matching type ‘long int’ [-Wbad-function-cast]
    116 |         type val1_ = (type)(a);                                         \
        |                      ^