Bug #37313 BINLOG Contains Incorrect server id

  
Signed integer format specifier forced to print the binlog header with server_id
negative if the unsigned value sets the sign-bit ON.
  
Fixed with correcting the specifier to correspond to typeof(server_id) == ulong.

mysql-test/r/mysqlbinlog.result

@@ -362,4 +362,14 @@ drop table t1;
 1
 drop table t1;
 shell> mysqlbinlog std_data/corrupt-relay-bin.000624 > var/tmp/bug31793.sql
+set @@global.server_id= 4294967295;
+reset master;
+select
+(@a:=load_file("MYSQLTEST_VARDIR/tmp/mysqlbinlog_bug37313.binlog"))
+is not null;
+(@a:=load_file("MYSQLTEST_VARDIR/tmp/mysqlbinlog_bug37313.binlog"))
+is not null
+1
+*** Unsigned server_id 4294967295 is found: 1 ***
+set @@global.server_id= 1;
 End of 5.0 tests

mysql-test/t/mysqlbinlog.test

@@ -253,4 +253,24 @@ echo shell> mysqlbinlog std_data/corrupt-relay-bin.000624 > var/tmp/bug31793.sql
 error 1;
 exec $MYSQL_BINLOG $MYSQL_TEST_DIR/std_data/corrupt-relay-bin.000624 > $MYSQLTEST_VARDIR/tmp/bug31793.sql;
 
+#
+# Bug #37313  	BINLOG Contains Incorrect server id
+#
+
+let $save_server_id= `select @@global.server_id`;
+let $s_id_max=`select (1 << 32) - 1`;
+eval set @@global.server_id= $s_id_max;
+
+reset master;
+--exec $MYSQL_BINLOG $MYSQLTEST_VARDIR/log/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/mysqlbinlog_bug37313.binlog
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
+eval select
+(@a:=load_file("$MYSQLTEST_VARDIR/tmp/mysqlbinlog_bug37313.binlog"))
+is not null;
+let $s_id_unsigned= `select @a like "%server id $s_id_max%" /* must return 1 */`;
+echo *** Unsigned server_id $s_id_max is found: $s_id_unsigned ***;
+
+eval set @@global.server_id= $save_server_id;
+--remove_file $MYSQLTEST_VARDIR/tmp/mysqlbinlog_bug37313.binlog
+
 --echo End of 5.0 tests

sql/log_event.cc

@@ -976,7 +976,7 @@ void Log_event::print_header(FILE* file, PRINT_EVENT_INFO* print_event_info)
 
   fputc('#', file);
   print_timestamp(file);
-  fprintf(file, " server id %d  end_log_pos %s ", server_id,
+  fprintf(file, " server id %lu  end_log_pos %s ", server_id,
 	  llstr(log_pos,llbuff));
 
   /* mysqlbinlog --hexdump */