Merge with 4.0.8

BUILD/SETUP.sh

@@ -48,7 +48,7 @@ fast_cflags="-O3 -fno-omit-frame-pointer"
 # this is one is for someone who thinks 1% speedup is worth not being
 # able to backtrace
 reckless_cflags="-O3 -fomit-frame-pointer "
-debug_cflags="-DUNIV_MUST_NOT_INLINE -DEXTRA_DEBUG -DFORCE_INIT_OF_VARS -DSAFEMALLOC -DPEDANTIC_SAFEMALLOC -DSAFE_MUTEX -O1"
+debug_cflags="-DUNIV_MUST_NOT_INLINE -DEXTRA_DEBUG -DFORCE_INIT_OF_VARS -DSAFEMALLOC -DPEDANTIC_SAFEMALLOC -DSAFE_MUTEX -O1 -Wuninitialized"
 
 base_cxxflags="-felide-constructors -fno-exceptions -fno-rtti"
 

Build-tools/Do-compile

@@ -8,7 +8,7 @@ use Getopt::Long;
 $opt_distribution=$opt_user=$opt_config_env="";
 $opt_dbd_options=$opt_perl_options=$opt_config_options=$opt_make_options=$opt_suffix="";
 $opt_tmp=$opt_version_suffix="";
-$opt_help=$opt_delete=$opt_debug=$opt_stage=$opt_no_test=$opt_no_perl=$opt_with_low_memory=$opt_fast_benchmark=$opt_static_client=$opt_static_server=$opt_static_perl=$opt_sur=$opt_with_small_disk=$opt_local_perl=$opt_tcpip=$opt_build_thread=$opt_use_old_distribution=$opt_enable_shared=$opt_no_crash_me=$opt_no_strip=$opt_with_debug=0;
+$opt_help=$opt_delete=$opt_debug=$opt_stage=$opt_no_test=$opt_no_perl=$opt_with_low_memory=$opt_fast_benchmark=$opt_static_client=$opt_static_server=$opt_static_perl=$opt_sur=$opt_with_small_disk=$opt_local_perl=$opt_tcpip=$opt_build_thread=$opt_use_old_distribution=$opt_enable_shared=$opt_no_crash_me=$opt_no_strip=$opt_with_debug=$opt_no_benchmark=$opt_no_mysqltest=0;
 $opt_innodb=$opt_bdb=$opt_raid=$opt_libwrap=0;
 
 GetOptions(
@@ -30,7 +30,9 @@ GetOptions(
 	"no-crash-me",
 	"no-perl",
 	"no-strip",
-	"no-test|no-mysqltest",
+	"no-test",
+	"no-mysqltest",
+	"no-benchmark",
 	"perl-files=s",
 	"perl-options=s",
 	"raid",
@@ -148,6 +150,7 @@ select STDOUT;
 $|=1;
 
 info("Compiling MySQL$opt_version_suffix at $host$opt_suffix, stage: $opt_stage\n");
+log_timestamp();
 
 if (-x "$host/bin/mysqladmin")
 {
@@ -161,6 +164,7 @@ kill_all("mysqlmanager");
 
 if ($opt_stage == 0)
 {
+  log_timestamp();
   print "$host: Removing old distribution\n" if ($opt_debug);
   if (!$opt_use_old_distribution)
   {
@@ -209,6 +213,7 @@ safe_cd("$pwd/$host/$ver");
 if ($opt_stage <= 1)
 {
   # Fix files if this is in another timezone than the build host
+  log_timestamp();
   unlink("config.cache");
   unlink("bdb/build_unix/config.cache");
   unlink("innobase/config.cache");
@@ -252,6 +257,7 @@ if ($opt_stage <= 1)
 if ($opt_stage <= 2)
 {
   my ($command);
+  log_timestamp();
   unlink($opt_distribution) if ($opt_delete && !$opt_use_old_distribution);
   $command=$make;
   $command.= " $opt_make_options" if (defined($opt_make_options) && $opt_make_options ne "");
@@ -264,6 +270,7 @@ if ($opt_stage <= 2)
 if ($opt_stage <= 3)
 {
   my $flags= "";
+  log_timestamp();
   log_system("rm -fr mysql-3* mysql-4* $pwd/$host/*.tar.gz");
   log_system("nm -n sql/mysqld | gzip -9 -v 2>&1 > sql/mysqld.sym.gz | cat");
 
@@ -292,6 +299,7 @@ if (!defined($tar_file))
 #
 if ($opt_stage <= 4 && !$opt_no_test)
 {
+  log_timestamp();
   rm_all(<$pwd/$host/test/*>);
   safe_cd("$pwd/$host/test");
   safe_system("gunzip < $tar_file | $tar xf -");
@@ -305,8 +313,9 @@ $ENV{"LD_LIBRARY_PATH"}= "$test_dir/lib:" . $ENV{"LD_LIBRARY_PATH"};
 #
 # Run the test suite
 #
-if ($opt_stage <= 5 && !$opt_no_test)
+if ($opt_stage <= 5 && !$opt_no_test && !$opt_no_mysqltest)
 {
+  log_timestamp();
   system("mkdir $bench_tmpdir") if (! -d $bench_tmpdir);
   safe_cd("${test_dir}/mysql-test");
   check_system("./mysql-test-run --warnings --tmpdir=$bench_tmpdir --master_port=$mysql_tcp_port --slave_port=$slave_port --manager-port=$manager_port --no-manager --sleep=10", "tests were successful");
@@ -315,7 +324,7 @@ if ($opt_stage <= 5 && !$opt_no_test)
 #
 # Start the server if we are going to run any of the benchmarks
 #
-if (!$opt_no_test)
+if (!$opt_no_test && !$opt_no_benchmark)
 {
   my $extra;
   safe_cd($test_dir);
@@ -339,8 +348,10 @@ if (!$opt_no_test)
 #
 # Compile and install the required Perl modules
 #
-if ($opt_stage <= 7 && $opt_perl_files && !$opt_no_perl && !$opt_no_test)
+if ($opt_stage <= 7 && $opt_perl_files && !$opt_no_perl && !$opt_no_test &&
+    !$opt_no_benchmark)
 {
+  log_timestamp();
   safe_cd($test_dir);
   rm_all("perl");
   safe_system("mkdir perl");
@@ -376,6 +387,7 @@ if ($opt_stage <= 7 && $opt_perl_files && !$opt_no_perl && !$opt_no_test)
 #
 if ($opt_stage <= 8 && !$opt_no_test && !$opt_no_crash_me)
 {
+  log_timestamp();
   safe_cd("$test_dir/sql-bench");
   log_system("rm -f limits/mysql.cfg");
   safe_system("perl ./crash-me --force --batch-mode $connect_option");
@@ -384,8 +396,9 @@ if ($opt_stage <= 8 && !$opt_no_test && !$opt_no_crash_me)
 #
 # Run sql-bench Benchmarks
 #
-if ($opt_stage <= 9 && !$opt_no_test)
+if ($opt_stage <= 9 && !$opt_no_test && !$opt_no_benchmark)
 {
+  log_timestamp();
   safe_cd("$test_dir/sql-bench");
   log_system("rm -f output/*");
   $tmp= $opt_fast_benchmark ? "--fast --user root --small-test" : "";
@@ -469,7 +482,13 @@ Do not run the "crash-me" test
 Do not strip the binaries included in the binary distribution
 
 --no-test
-Do not run any tests
+Do not run any tests.
+
+--no-benchmark
+Do not run the benchmark test (written in perl)
+
+--no-mysqltest
+Do not run the the mysql-test-run test (Same as 'make test')
 
 --perl-files=list of files
 Compile and install the given perl modules.
@@ -532,6 +551,7 @@ sub abort
   my($mail_header_file);
   print LOG "\n$message\n";
   print "$host: $message\n" if ($opt_debug);
+  print LOG "Aborting\n";
   close LOG;
 
   if ($opt_user)
@@ -547,7 +567,6 @@ sub abort
     unlink($mail_header_file);
     unlink("$log.mail");
   }
-  print LOG "Aborting\n";
   exit 1;
 }
 
@@ -689,9 +708,10 @@ sub rm_all
 sub kill_all
 {
   my ($pattern) = @_;
-  my ($USER,$BSD,$LINUX, $pscmd, $user, $pid);
+  my ($USER,$BSD,$LINUX, $pscmd, $user, $os, $pid);
   $user=$ENV{'USER'};
-  $BSD = -f '/vmunix' || $ENV{"OS"} eq "SunOS4" || $^O eq 'darwin';
+  $os=defined($ENV{'OS'}) ? $ENV{'OS'} : "unknown";
+  $BSD = -f '/vmunix' || $os eq "SunOS4" || $^O eq 'darwin';
   $LINUX = $^O eq 'linux';
   $pscmd = $BSD ? "/bin/ps -auxww" : $LINUX ? "/bin/ps axuw" : "/bin/ps -ef";
 
@@ -707,7 +727,7 @@ sub kill_all
   {
     chop($cand);
     ($pid_user, $pid) = split(' ', $cand);
-    next if $pid == $$;
+    next if $pid eq $$;
     next process if (! ($cand =~ $pattern) || $pid_user ne $user);
     print LOG "Killing $_\n";
     &killpid($pid);
@@ -730,3 +750,14 @@ sub killpid
   }
   print LOG "$pid will not die!\n";
 }
+
+#
+# return the current date as a string (YYYY-MM-DD HH:MM:SS)
+#
+sub log_timestamp
+{
+  my @ta=localtime(time());
+  print LOG sprintf("%4d-%02d-%02d %02d:%02d:%02d\n",
+		    $ta[5]+1900, $ta[4]+1, $ta[3], $ta[2], $ta[1], $ta[0]);
+
+}

acinclude.m4

@@ -623,7 +623,7 @@ main()
   FILE *file=fopen("conftestval", "w");
   f = (float) ll;
   fprintf(file,"%g\n",f);
-  close(file);
+  fclose(file);
   exit (0);
 }], ac_cv_conv_longlong_to_float=`cat conftestval`, ac_cv_conv_longlong_to_float=0, ifelse([$2], , , ac_cv_conv_longlong_to_float=$2))])dnl
 if test "$ac_cv_conv_longlong_to_float" = "1" -o "$ac_cv_conv_longlong_to_float" = "yes"

configure.in

@@ -882,6 +882,7 @@ int main()
 #
 
 MAX_C_OPTIMIZE="-O3"
+MAX_CXX_OPTIMIZE="-O3"
 
 case $SYSTEM_TYPE in
   *solaris2.7*)
@@ -949,6 +950,8 @@ case $SYSTEM_TYPE in
     then
       CFLAGS="$CFLAGS +DD64 -DHAVE_BROKEN_INLINE"
       CXXFLAGS="$CXXFLAGS +DD64 +O2"
+      MAX_C_OPTIMIZE=""
+      MAX_CXX_OPTIMIZE=""
     fi
     ;;
   *rhapsody*)
@@ -1407,7 +1410,7 @@ if test "$ac_cv_prog_cxx_g" = "yes"
 then
   DEBUG_CXXFLAGS="-g"
   DEBUG_OPTIMIZE_CXX="-O"
-  OPTIMIZE_CXXFLAGS="-O3"
+  OPTIMIZE_CXXFLAGS="$MAX_CXX_OPTIMIZE"
 else
   DEBUG_CXXFLAGS="-g"
   DEBUG_OPTIMIZE_CXX=""

include/mysql.h

@@ -127,6 +127,7 @@ struct st_mysql_options {
   char *ssl_ca;					/* PEM CA file */
   char *ssl_capath;				/* PEM directory of CA-s? */
   char *ssl_cipher;				/* cipher to use */
+  unsigned long max_allowed_packet;
   my_bool use_ssl;				/* if to use SSL or not */
   my_bool compress,named_pipe;
  /*

include/mysql_com.h

@@ -42,7 +42,8 @@ enum enum_server_command
   COM_PROCESS_INFO, COM_CONNECT, COM_PROCESS_KILL, COM_DEBUG, COM_PING,
   COM_TIME, COM_DELAYED_INSERT, COM_CHANGE_USER, COM_BINLOG_DUMP,
   COM_TABLE_DUMP, COM_CONNECT_OUT, COM_REGISTER_SLAVE,
-  COM_PREPARE, COM_EXECUTE, COM_LONG_DATA, COM_CLOSE_STMT
+  COM_PREPARE, COM_EXECUTE, COM_LONG_DATA, COM_CLOSE_STMT,
+  COM_END				/* Must be last */
 };
 
 

innobase/include/univ.i

@@ -57,6 +57,7 @@ of the 32-bit x86 assembler in mutex operations. */
 Microsoft Visual C++ */
 
 #if !defined(__GNUC__) && !defined(__WIN__)
+#undef  UNIV_MUST_NOT_INLINE			/* Remove compiler warning */
 #define UNIV_MUST_NOT_INLINE
 #endif
 

innobase/os/os0file.c

@@ -2127,7 +2127,7 @@ os_aio_simulated_handle(
 	ulint		offs;
 	ulint		lowest_offset;
 	byte*		combined_buf;
-	byte*		combined_buf2;
+	byte*		combined_buf2= 0;	/* Remove warning */
 	ibool		ret;
 	ulint		n;
 	ulint		i;

innobase/trx/trx0sys.c

@@ -472,9 +472,9 @@ trx_sys_update_mysql_binlog_offset(
 	if (0 != ut_memcmp(sys_header + field + TRX_SYS_MYSQL_LOG_NAME,
 			file_name, 1 + ut_strlen(file_name))) {
 
-		mlog_write_string(sys_header + field
-					+ TRX_SYS_MYSQL_LOG_NAME,
-			file_name, 1 + ut_strlen(file_name), mtr);
+		mlog_write_string((byte*) (sys_header + field
+					+ TRX_SYS_MYSQL_LOG_NAME),
+			(byte*) file_name, 1 + ut_strlen(file_name), mtr);
 	}
 
 	if (mach_read_from_4(sys_header + field

innobase/trx/trx0trx.c

@@ -99,7 +99,7 @@ trx_create(
 
 	trx->mysql_log_file_name = NULL;
 	trx->mysql_log_offset = 0;
-	trx->mysql_master_log_file_name = "";
+	trx->mysql_master_log_file_name = (char*) "";
 	trx->mysql_master_log_pos = 0;
 	
 	trx->ignore_duplicates_in_insert = FALSE;

innobase/ut/ut0ut.c

@@ -197,7 +197,6 @@ ut_get_year_month_day(
   	*month = (ulint)cal_tm.wMonth;
   	*day = (ulint)cal_tm.wDay;
 #else
-  	struct tm  cal_tm;
   	struct tm* cal_tm_ptr;
   	time_t     tm;
 

libmysql/libmysql.c

@@ -61,7 +61,7 @@ static my_bool	mysql_client_init=0;
 uint		mysql_port=0;
 my_string	mysql_unix_port=0;
 ulong 		net_buffer_length=8192;
-ulong		max_allowed_packet=16*1024*1024L;
+ulong		max_allowed_packet= 1024L*1024L*1024L;
 ulong		net_read_timeout=  NET_READ_TIMEOUT;
 ulong		net_write_timeout= NET_WRITE_TIMEOUT;
 
@@ -928,7 +928,8 @@ static const char *default_options[]=
   "character-sets-dir", "default-character-set", "interactive-timeout",
   "connect-timeout", "local-infile", "disable-local-infile",
   "replication-probe", "enable-reads-from-master", "repl-parse-query",
-  "ssl-cipher","protocol", "shared_memory_base_name",
+  "ssl-cipher", "max-allowed-packet",
+  "protocol", "shared-memory-base-name",
   NullS
 };
 
@@ -1099,14 +1100,17 @@ static void mysql_read_default_options(struct st_mysql_options *options,
 	case 25: /* repl-parse-query */
 	  options->rpl_parse= 1;
 	  break;
-        case 27:/* protocol */
+	case 27:
+	  options->max_allowed_packet= atoi(opt_arg);
+	  break;
+        case 28:		/* protocol */
           if ((options->protocol = find_type(opt_arg, &sql_protocol_typelib,0)) == ~(ulong) 0)
           {
             fprintf(stderr, "Unknown option to protocol: %s\n", opt_arg);
             exit(1);
           }
           break;
-        case 28: /*shared_memory_base_name*/
+        case 29:		/* shared_memory_base_name */
 #ifdef HAVE_SMEM
           if (options->shared_memory_base_name != def_shared_memory_base_name)
             my_free(options->shared_memory_base_name,MYF(MY_ALLOW_ZERO_PTR));
@@ -2242,6 +2246,7 @@ Try also with PIPE or TCP/IP
   DBUG_PRINT("info",("Server version = '%s'  capabilites: %ld  status: %d  client_flag: %d",
 		     mysql->server_version,mysql->server_capabilities,
 		     mysql->server_status, client_flag));
+  /* This needs to be changed as it's not useful with big packets */
   int3store(buff+2,max_allowed_packet);
   if (user && user[0])
     strmake(buff+5,user,32);			/* Max user name */
@@ -2350,6 +2355,8 @@ Try also with PIPE or TCP/IP
 
   if (client_flag & CLIENT_COMPRESS)		/* We will use compression */
     net->compress=1;
+  if (mysql->options.max_allowed_packet)
+    net->max_packet_size= mysql->options.max_allowed_packet;
   if (db && mysql_select_db(mysql,db))
     goto error;
 
@@ -2853,7 +2860,7 @@ mysql_real_query(MYSQL *mysql, const char *query, ulong length)
 {
   DBUG_ENTER("mysql_real_query");
   DBUG_PRINT("enter",("handle: %lx",mysql));
-  DBUG_PRINT("query",("Query = \"%s\"",query));
+  DBUG_PRINT("query",("Query = '%-.4096s'",query));
 
   if (mysql_send_query(mysql,query,length))
     DBUG_RETURN(1);

myisam/mi_check.c

@@ -3656,7 +3656,7 @@ void update_key_parts(MI_KEYDEF *keyinfo, ulong *rec_per_key_part,
 }
 
 
-ha_checksum mi_byte_checksum(const byte *buf, uint length)
+static ha_checksum mi_byte_checksum(const byte *buf, uint length)
 {
   ha_checksum crc;
   const byte *end=buf+length;

myisam/mi_test1.c

@@ -57,7 +57,7 @@ int main(int argc,char *argv[])
 }
 
 
-int run_test(const char *filename)
+static int run_test(const char *filename)
 {
   MI_INFO *file;
   int i,j,error,deleted,rec_length,uniques=0;

mysql-test/r/packet.result

+set global max_allowed_packet=100;
+set max_allowed_packet=100;
+set global net_buffer_length=100;
+set net_buffer_length=100;
+SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
+len
+1024
+select repeat('a',200);
+repeat('a',200)
+NULL
+select @@net_buffer_length, @@max_allowed_packet;
+@@net_buffer_length	@@max_allowed_packet
+1024	80
+SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
+Got a packet bigger than 'max_allowed_packet'
+set global max_allowed_packet=default;
+set max_allowed_packet=default;
+set global net_buffer_length=default;
+set net_buffer_length=default;
+SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
+len
+100
+select length(repeat('a',200));
+length(repeat('a',200))
+200

mysql-test/t/func_str.test

@@ -71,7 +71,8 @@ select decode(encode("abcdef","monty"),"monty")="abcdef";
 select quote('\'\"\\test');
 select quote(concat('abc\'', '\\cba'));
 select quote(1/0), quote('\0\Z');
-select length(quote(concat(char(0), "test")));
+select length(quote(concat(char(0),"test")));
+
 #
 # Wrong usage of functions
 #

mysql-test/t/packet.test

+
+#
+# Check protocol handling
+#
+
+connect (con1,localhost,root,,);
+
+connection con1;
+set global max_allowed_packet=100;
+set max_allowed_packet=100;
+set global net_buffer_length=100;
+set net_buffer_length=100;
+# Have to be > 1024 as min value of net_buffer_length is 1024
+SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
+# Should return NULL as 200 is bigger than max_allowed_packet
+select repeat('a',200);
+
+#
+# Connection 2 should get error for too big packets
+#
+connect (con2,localhost,root,,);
+connection con2;
+select @@net_buffer_length, @@max_allowed_packet;
+--error 1153
+SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
+set global max_allowed_packet=default;
+set max_allowed_packet=default;
+set global net_buffer_length=default;
+set net_buffer_length=default;
+SELECT length("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") as len;
+select length(repeat('a',200));

mysys/my_compress.c

@@ -32,24 +32,28 @@
 
 my_bool my_compress(byte *packet, ulong *len, ulong *complen)
 {
+  DBUG_ENTER("my_compress");
   if (*len < MIN_COMPRESS_LENGTH)
+  {
     *complen=0;
+    DBUG_PRINT("note",("Packet too short: Not compressed"));
+  }
   else
   {
     byte *compbuf=my_compress_alloc(packet,len,complen);
     if (!compbuf)
-      return *complen ? 0 : 1;
+      DBUG_RETURN(*complen ? 0 : 1);
     memcpy(packet,compbuf,*len);
     my_free(compbuf,MYF(MY_WME));						  }
-  return 0;
+  DBUG_RETURN(0);
 }
 
 
 byte *my_compress_alloc(const byte *packet, ulong *len, ulong *complen)
 {
   byte *compbuf;
-  *complen =  *len * 120 / 100 + 12;
-  if (!(compbuf = (byte *) my_malloc(*complen,MYF(MY_WME))))
+  *complen=  *len * 120 / 100 + 12;
+  if (!(compbuf= (byte *) my_malloc(*complen,MYF(MY_WME))))
     return 0;					/* Not enough memory */
   if (compress((Bytef*) compbuf,(ulong *) complen, (Bytef*) packet,
 	       (uLong) *len ) != Z_OK)
@@ -59,31 +63,36 @@ byte *my_compress_alloc(const byte *packet, ulong *len, ulong *complen)
   }
   if (*complen >= *len)
   {
-    *complen=0;
-    my_free(compbuf,MYF(MY_WME));
+    *complen= 0;
+    my_free(compbuf, MYF(MY_WME));
+    DBUG_PRINT("note",("Packet got longer on compression; Not compressed"));
     return 0;
   }
-  swap(ulong,*len,*complen);			/* *len is now packet length */
+  swap(ulong, *len, *complen);			/* *len is now packet length */
   return compbuf;
 }
 
 
 my_bool my_uncompress (byte *packet, ulong *len, ulong *complen)
 {
+  DBUG_ENTER("my_uncompress");
   if (*complen)					/* If compressed */
   {
-    byte *compbuf = (byte *) my_malloc (*complen,MYF(MY_WME));
+    byte *compbuf= (byte *) my_malloc(*complen,MYF(MY_WME));
+    int error;
     if (!compbuf)
-      return 1;					/* Not enough memory */
-    if (uncompress((Bytef*) compbuf, complen, (Bytef*) packet, *len) != Z_OK)
+      DBUG_RETURN(1);				/* Not enough memory */
+    if ((error=uncompress((Bytef*) compbuf, complen, (Bytef*) packet, *len))
+	!= Z_OK)
     {						/* Probably wrong packet */
-      my_free (compbuf,MYF(MY_WME));
-      return 1;
+      DBUG_PRINT("error",("Can't uncompress packet, error: %d",error));
+      my_free(compbuf, MYF(MY_WME));
+      DBUG_RETURN(1);
     }
-    *len = *complen;
-    memcpy(packet,compbuf,*len);
-    my_free(compbuf,MYF(MY_WME));
+    *len= *complen;
+    memcpy(packet, compbuf, *len);
+    my_free(compbuf, MYF(MY_WME));
   }
-  return 0;
+  DBUG_RETURN(0);
 }
 #endif /* HAVE_COMPRESS */

mysys/my_getopt.c

@@ -572,7 +572,7 @@ static longlong eval_num_suffix (char *argument, int *error, char *option_name)
   In case of an error, set error value in *err.
 */
 
-longlong getopt_ll (char *arg, const struct my_option *optp, int *err)
+static longlong getopt_ll(char *arg, const struct my_option *optp, int *err)
 {
   longlong num;
   
@@ -596,7 +596,7 @@ longlong getopt_ll (char *arg, const struct my_option *optp, int *err)
   values.
 */
 
-static ulonglong getopt_ull (char *arg, const struct my_option *optp, int *err)
+static ulonglong getopt_ull(char *arg, const struct my_option *optp, int *err)
 {
   ulonglong num;
 

sql/ha_berkeley.cc

@@ -2119,7 +2119,7 @@ int ha_berkeley::analyze(THD* thd, HA_CHECK_OPT* check_opt)
       free(stat);
       stat=0;
     }
-    if (key_file[i]->stat(key_file[i], (void*) &stat, 0))
+    if ((key_file[i]->stat)(key_file[i], (void*) &stat, 0))
       goto err; /* purecov: inspected */
     share->rec_per_key[i]= (stat->bt_ndata /
 			    (stat->bt_nkeys ? stat->bt_nkeys : 1));
@@ -2132,7 +2132,7 @@ int ha_berkeley::analyze(THD* thd, HA_CHECK_OPT* check_opt)
       free(stat);
       stat=0;
     }
-    if (file->stat(file, (void*) &stat, 0))
+    if ((file->stat)(file, (void*) &stat, 0))
       goto err; /* purecov: inspected */
   }
   pthread_mutex_lock(&share->mutex);

sql/mini_client.cc

@@ -545,10 +545,13 @@ mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
     bzero((char*) &UNIXaddr,sizeof(UNIXaddr));
     UNIXaddr.sun_family = AF_UNIX;
     strmov(UNIXaddr.sun_path, unix_socket);
-    if (mc_sock_connect(sock,(struct sockaddr *) &UNIXaddr, sizeof(UNIXaddr),
+    if (mc_sock_connect(sock,
+			my_reinterpret_cast(struct sockaddr *) (&UNIXaddr),
+			sizeof(UNIXaddr),
 			mysql->options.connect_timeout) <0)
     {
-      DBUG_PRINT("error",("Got error %d on connect to local server",socket_errno));
+      DBUG_PRINT("error",("Got error %d on connect to local server",
+			  socket_errno));
       net->last_errno=CR_CONNECTION_ERROR;
       sprintf(net->last_error,ER(net->last_errno),unix_socket,socket_errno);
       goto error;
@@ -635,7 +638,9 @@ mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
       my_gethostbyname_r_free();
     }
     sock_addr.sin_port = (ushort) htons((ushort) port);
-    if (mc_sock_connect(sock,(struct sockaddr *) &sock_addr, sizeof(sock_addr),
+    if (mc_sock_connect(sock,
+			my_reinterpret_cast(struct sockaddr *) (&sock_addr),
+			sizeof(sock_addr),
 			mysql->options.connect_timeout) <0)
     {
       DBUG_PRINT("error",("Got error %d on connect to '%s'",

sql/net_serv.cc

@@ -73,7 +73,7 @@ extern pthread_mutex_t LOCK_bytes_sent , LOCK_bytes_received;
 #include "thr_alarm.h"
 
 #define TEST_BLOCKING		8
-#define MAX_THREE_BYTES (256L*256L*256L-1)
+#define MAX_PACKET_LENGTH (256L*256L*256L-1)
 
 static my_bool net_write_buff(NET *net,const char *packet,ulong len);
 
@@ -132,13 +132,17 @@ my_bool net_realloc(NET *net, ulong length)
 {
   uchar *buff;
   ulong pkt_length;
+  DBUG_ENTER("net_realloc");
+  DBUG_PRINT("enter",("length: %lu", length));
+
   if (length >= net->max_packet_size)
   {
-    DBUG_PRINT("error",("Packet too large (%lu)", length));
+    DBUG_PRINT("error",("Packet too large. Max sixe: %lu",
+			net->max_packet_size));
     net->error= 1;
     net->report_error= 1;
     net->last_errno= ER_NET_PACKET_TOO_LARGE;
-    return 1;
+    DBUG_RETURN(1);
   }
   pkt_length = (length+IO_SIZE-1) & ~(IO_SIZE-1); 
   /*
@@ -154,11 +158,11 @@ my_bool net_realloc(NET *net, ulong length)
 #ifdef MYSQL_SERVER
     net->last_errno= ER_OUT_OF_RESOURCES;
 #endif
-    return 1;
+    DBUG_RETURN(1);
   }
   net->buff=net->write_pos=buff;
   net->buff_end=buff+(net->max_packet=pkt_length);
-  return 0;
+  DBUG_RETURN(0);
 }
 
 	/* Remove unwanted characters from connection */
@@ -220,13 +224,13 @@ my_net_write(NET *net,const char *packet,ulong len)
 {
   uchar buff[NET_HEADER_SIZE];
   /*
-    Big packets are handled by splitting them in packets of MAX_THREE_BYTES
-    length. The last packet is always a packet that is < MAX_THREE_BYTES.
-    (The last packet may even have a lengt of 0)
+    Big packets are handled by splitting them in packets of MAX_PACKET_LENGTH
+    length. The last packet is always a packet that is < MAX_PACKET_LENGTH.
+    (The last packet may even have a length of 0)
   */
-  while (len >= MAX_THREE_BYTES)
+  while (len >= MAX_PACKET_LENGTH)
   {
-    const ulong z_size = MAX_THREE_BYTES;
+    const ulong z_size = MAX_PACKET_LENGTH;
     int3store(buff, z_size);
     buff[3]= (uchar) net->pkt_nr++;
     if (net_write_buff(net, (char*) buff, NET_HEADER_SIZE) ||
@@ -241,7 +245,7 @@ my_net_write(NET *net,const char *packet,ulong len)
   if (net_write_buff(net,(char*) buff,NET_HEADER_SIZE))
     return 1;
   DBUG_DUMP("packet_header",(char*) buff,NET_HEADER_SIZE);
-  return net_write_buff(net,packet,len);
+  return test(net_write_buff(net,packet,len));
 }
 
 /*
@@ -280,67 +284,110 @@ net_write_command(NET *net,uchar command,
   ulong length=len+1+head_len;			/* 1 extra byte for command */
   uchar buff[NET_HEADER_SIZE+1];
   uint header_size=NET_HEADER_SIZE+1;
+  DBUG_ENTER("net_write_command");
+  DBUG_PRINT("enter",("length: %lu", len));
+
   buff[4]=command;				/* For first packet */
 
-  if (length >= MAX_THREE_BYTES)
+  if (length >= MAX_PACKET_LENGTH)
   {
     /* Take into account that we have the command in the first header */
-    len= MAX_THREE_BYTES - 1 - head_len;
+    len= MAX_PACKET_LENGTH - 1 - head_len;
     do
     {
-      int3store(buff, MAX_THREE_BYTES);
+      int3store(buff, MAX_PACKET_LENGTH);
       buff[3]= (uchar) net->pkt_nr++;
       if (net_write_buff(net,(char*) buff, header_size) ||
 	  net_write_buff(net, header, head_len) ||
 	  net_write_buff(net, packet, len))
-	return 1;
+	DBUG_RETURN(1);
       packet+= len;
-      length-= MAX_THREE_BYTES;
-      len=MAX_THREE_BYTES;
-      head_len=0;
-      header_size=NET_HEADER_SIZE;
-    } while (length >= MAX_THREE_BYTES);
+      length-= MAX_PACKET_LENGTH;
+      len= MAX_PACKET_LENGTH;
+      head_len= 0;
+      header_size= NET_HEADER_SIZE;
+    } while (length >= MAX_PACKET_LENGTH);
     len=length;					/* Data left to be written */
   }
   int3store(buff,length);
   buff[3]= (uchar) net->pkt_nr++;
-  return test(net_write_buff(net, (char*) buff, header_size) ||
+  DBUG_RETURN(test(net_write_buff(net, (char*) buff, header_size) ||
 	      (head_len && net_write_buff(net, (char*) header, head_len)) ||
-	      net_write_buff(net, packet, len) || net_flush(net));
+	      net_write_buff(net, packet, len) || net_flush(net)));
 }
 
 /*
   Caching the data in a local buffer before sending it.
-  One can force the buffer to be flushed with 'net_flush'.
 
+  SYNOPSIS
+    net_write_buff()
+    net		Network handler
+    packet	Packet to send
+    len		Length of packet
+
+  DESCRIPTION
+    Fill up net->buffer and send it to the client when full.
+
+    If the rest of the to-be-sent-packet is bigger than buffer,
+    send it in one big block (to avoid copying to internal buffer).
+    If not, copy the rest of the data to the buffer and return without
+    sending data.
+
+  NOTES
+    The cached buffer can be sent as it is with 'net_flush()'.
+
+    In this code we have to be careful to not send a packet longer than
+    MAX_PACKET_LENGTH to net_real_write() if we are using the compressed protocol
+    as we store the length of the compressed packet in 3 bytes.
+
+  RETURN
+  0	ok
+  1
 */
 
 static my_bool
 net_write_buff(NET *net,const char *packet,ulong len)
 {
-  ulong left_length=(ulong) (net->buff_end - net->write_pos);
+  ulong left_length;
+  if (net->compress && net->max_packet > MAX_PACKET_LENGTH)
+    left_length= MAX_PACKET_LENGTH - (net->write_pos - net->buff);
+  else
+    left_length= (ulong) (net->buff_end - net->write_pos);
 
   if (len > left_length)
   {
-    memcpy((char*) net->write_pos,packet,left_length);
-    if (net_real_write(net,(char*) net->buff,net->max_packet))
-      return 1;
-    net->write_pos=net->buff;
-    packet+=left_length;
-    len-= left_length;
-    left_length= net->max_packet;
-
-    /* Send out rest of the blocks as full sized blocks */
-    while (len > left_length)
+    if (net->write_pos != net->buff)
     {
-      if (net_real_write(net, packet, left_length))
+      /* Fill up already used packet and write it */
+      memcpy((char*) net->write_pos,packet,left_length);
+      if (net_real_write(net,(char*) net->buff, 
+			 (ulong) (net->write_pos - net->buff) + left_length))
 	return 1;
+      net->write_pos= net->buff;
       packet+= left_length;
       len-= left_length;
     }
+    if (net->compress)
+    {
+      /*
+	We can't have bigger packets than 16M with compression
+	Because the uncompressed length is stored in 3 bytes
+      */
+      left_length= MAX_PACKET_LENGTH;
+      while (len > left_length)
+      {
+	if (net_real_write(net, packet, left_length))
+	  return 1;
+	packet+= left_length;
+	len-= left_length;
+      }
+    }
+    if (len > net->max_packet)
+      return net_real_write(net, packet, len) ? 1 : 0;
+    /* Send out rest of the blocks as full sized blocks */
   }
   memcpy((char*) net->write_pos,packet,len);
-  net->write_pos+=len;
+  net->write_pos+= len;
   return 0;
 }
 
@@ -393,11 +440,7 @@ net_real_write(NET *net,const char *packet,ulong len)
     memcpy(b+header_length,packet,len);
 
     if (my_compress((byte*) b+header_length,&len,&complen))
-    {
-      DBUG_PRINT("warning",
-		 ("Compression error; Continuing without compression"));
       complen=0;
-    }
     int3store(&b[NET_HEADER_SIZE],complen);
     int3store(b,len);
     b[3]=(uchar) (net->compress_pkt_nr++);
@@ -500,28 +543,15 @@ net_real_write(NET *net,const char *packet,ulong len)
 *****************************************************************************/
 
 #ifndef NO_ALARM
-/*
-  Help function to clear the commuication buffer when we get a too
-  big packet
-*/
 
-static void my_net_skip_rest(NET *net, uint32 remain, thr_alarm_t *alarmed)
+static my_bool net_safe_read(NET *net, char *buff, uint32 length,
+			     thr_alarm_t *alarmed)
 {
-  ALARM alarm_buff;
   uint retry_count=0;
-  my_bool old_mode;
-  uint32 old=remain;
-
-  if (!thr_alarm_in_use(&alarmed))
+  while (length > 0)
   {
-    if (!thr_alarm(alarmed,net->read_timeout,&alarm_buff) ||
-	vio_blocking(net->vio, TRUE, &old_mode) < 0)
-      return;					/* Can't setup, abort */
-  }
-  while (remain > 0)
-  {
-    ulong length;
-    if ((int) (length=vio_read(net->vio,(char*) net->buff,remain)) <= 0L)
+    int tmp;
+    if ((tmp=vio_read(net->vio,(char*) net->buff, length)) <= 0)
     {
       my_bool interrupted = vio_should_retry(net->vio);
       if (!thr_got_alarm(&alarmed) && interrupted)
@@ -529,17 +559,60 @@ static void my_net_skip_rest(NET *net, uint32 remain, thr_alarm_t *alarmed)
 	if (retry_count++ < net->retry_count)
 	  continue;
       }
-      return;
+      return 1;
     }
-    remain -= (uint32) length;
-    if (!remain && old==MAX_THREE_BYTES && 
-	(length=vio_read(net->vio,(char*) net->buff,NET_HEADER_SIZE)))
+    length-= tmp;
+  }
+  return 0;
+}
+
+/*
+  Help function to clear the commuication buffer when we get a too big packet.
+
+  SYNOPSIS
+    my_net_skip_rest()
+    net		Communication handle
+    remain	Bytes to read
+    alarmed	Parameter for thr_alarm()
+    alarm_buff	Parameter for thr_alarm()
+
+  RETURN VALUES
+   0	Was able to read the whole packet
+   1	Got mailformed packet from client
+*/
+
+static my_bool my_net_skip_rest(NET *net, uint32 remain, thr_alarm_t *alarmed,
+				ALARM *alarm_buff)
+{
+  uint32 old=remain;
+  DBUG_ENTER("my_net_skip_rest");
+  DBUG_PRINT("enter",("bytes_to_skip: %u", (uint) remain));
+
+  if (!thr_alarm_in_use(&alarmed))
+  {
+    my_bool old_mode;
+    if (!thr_alarm(alarmed,net->read_timeout, alarm_buff) ||
+	vio_blocking(net->vio, TRUE, &old_mode) < 0)
+      DBUG_RETURN(1);				/* Can't setup, abort */
+  }
+  for (;;)
+  {
+    while (remain > 0)
     {
-      old=remain= uint3korr(net->buff);
-      net->pkt_nr++;
+      uint length= min(remain, net->max_packet);
+      if (net_safe_read(net, (char*) net->buff, length, alarmed))
+	DBUG_RETURN(1);
+      statistic_add(bytes_received, length, &LOCK_bytes_received);
+      remain -= (uint32) length;
     }
-    statistic_add(bytes_received,length,&LOCK_bytes_received);
+    if (old != MAX_PACKET_LENGTH)
+      break;
+    if (net_safe_read(net, (char*) net->buff, NET_HEADER_SIZE, alarmed))
+      DBUG_RETURN(1);
+    old=remain= uint3korr(net->buff);
+    net->pkt_nr++;
   }
+  DBUG_RETURN(0);
 }
 #endif /* NO_ALARM */
 
@@ -639,9 +712,8 @@ my_real_read(NET *net, ulong *complen)
 	    continue;
 	  }
 #endif
-	  DBUG_PRINT("error",("Couldn't read packet: remain: %lu  errno: %d  length: %ld  alarmed: %d",
-			      remain,vio_errno(net->vio), length,
-			      thr_got_alarm(&alarmed)));
+	  DBUG_PRINT("error",("Couldn't read packet: remain: %u  errno: %d  length: %ld",
+			      remain, vio_errno(net->vio), length));
 	  len= packet_error;
 	  net->error= 2;				/* Close socket */
 	  net->report_error= 1;
@@ -701,19 +773,12 @@ my_real_read(NET *net, ulong *complen)
 	{
 	  if (net_realloc(net,helping))
 	  {
-#ifdef MYSQL_SERVER
-#ifndef NO_ALARM
-	    if (net->compress)
-	    {
-	      len= packet_error;
-	      goto end;
-	    }
-	    my_net_skip_rest(net, (uint32) len, &alarmed);
-	    len=0;
-#endif
-#else
-	    len= packet_error;          /* Return error */
+#if defined(MYSQL_SERVER) && !defined(NO_ALARM)
+	    if (!net->compress &&
+		!my_net_skip_rest(net, (uint32) len, &alarmed, &alarm_buff))
+	      net->error= 3;		/* Successfully skiped packet */
 #endif
+	    len= packet_error;          /* Return error and close connection */
 	    goto end;
 	  }
 	}
@@ -757,7 +822,7 @@ my_net_read(NET *net)
   {
 #endif
     len = my_real_read(net,&complen);
-    if (len == MAX_THREE_BYTES)
+    if (len == MAX_PACKET_LENGTH)
     {
       /* First packet of a multi-packet.  Concatenate the packets */
       ulong save_pos = net->where_b;
@@ -767,7 +832,7 @@ my_net_read(NET *net)
 	net->where_b += len;
 	total_length += len;
 	len = my_real_read(net,&complen);
-      } while (len == MAX_THREE_BYTES);
+      } while (len == MAX_PACKET_LENGTH);
       if (len != packet_error)
 	len+= total_length;
       net->where_b = save_pos;
@@ -825,7 +890,7 @@ my_net_read(NET *net)
 	  else
 	    start_of_packet+= read_length + NET_HEADER_SIZE;
 
-	  if (read_length != MAX_THREE_BYTES)	    /* last package */
+	  if (read_length != MAX_PACKET_LENGTH)	/* last package */
 	  {
 	    multi_byte_packet= 0;		/* No last zero len packet */
 	    break;

sql/protocol.cc

@@ -331,7 +331,7 @@ net_store_length(char *pkg, ulonglong length)
   }
   *packet++=254;
   int8store(packet,length);
-  return (char*) packet+9;
+  return (char*) packet+8;
 }
 
 

sql/sql_class.h

@@ -432,7 +432,7 @@ public:
   uint client_capabilities;		/* What the client supports */
   /* Determines if which non-standard SQL behaviour should be enabled */
   uint sql_mode;
-  uint max_client_packet_length;
+  ulong max_client_packet_length;
   ulong master_access;			/* Global privileges from mysql.user */
   ulong db_access;			/* Privileges for current db */
 

sql/sql_parse.cc

@@ -74,7 +74,8 @@ const char *command_name[]={
   "Drop DB", "Refresh", "Shutdown", "Statistics", "Processlist",
   "Connect","Kill","Debug","Ping","Time","Delayed_insert","Change user",
   "Binlog Dump","Table Dump",  "Connect Out", "Register Slave",
-  "Prepare", "Prepare Execute", "Long Data", "Close stmt"
+  "Prepare", "Prepare Execute", "Long Data", "Close stmt",
+  "Error"					// Last command number
 };
 
 static char empty_c_string[1]= {0};		// Used for not defined 'db'
@@ -211,7 +212,7 @@ static int check_user(THD *thd,enum_server_command command, const char *user,
                                    cur_priv_version,hint_user);
 
   DBUG_PRINT("info",
-	     ("Capabilities: %d  packet_length: %d  Host: '%s'  User: '%s'  Using password: %s  Access: %u  db: '%s'",
+	     ("Capabilities: %d  packet_length: %ld  Host: '%s'  User: '%s'  Using password: %s  Access: %u  db: '%s'",
 	      thd->client_capabilities, thd->max_client_packet_length,
 	      thd->host_or_ip, thd->priv_user,
 	      had_password ? "yes": "no",
@@ -516,7 +517,8 @@ check_connections(THD *thd)
     {
       vio_in_addr(net->vio,&thd->remote.sin_addr);
       thd->host=ip_to_hostname(&thd->remote.sin_addr,&connect_errors);
-      thd->host[strnlen(thd->host, HOSTNAME_LENGTH)]= 0;
+      /* Cut very long hostnames to avoid possible overflows */
+      thd->host[min(strlen(thd->host), HOSTNAME_LENGTH)]= 0;
       if (connect_errors > max_connect_errors)
 	return(ER_HOST_IS_BLOCKED);
     }
@@ -967,20 +969,22 @@ bool do_command(THD *thd)
   net_new_transaction(net);
   if ((packet_length=my_net_read(net)) == packet_error)
   {
-     DBUG_PRINT("info",("Got error reading command from socket %s",
-			vio_description(net->vio) ));
-    return TRUE;
-  }
-  else if (!packet_length)
-  {
+    DBUG_PRINT("info",("Got error %d reading command from socket %s",
+		       net->error,
+		       vio_description(net->vio)));
+    /* Check if we can continue without closing the connection */
+    if (net->error != 3)
+      DBUG_RETURN(TRUE);			// We have to close it.
     send_error(thd,net->last_errno,NullS);
-    net->error=0;
+    net->error= 0;
     DBUG_RETURN(FALSE);
   }
   else
   {
     packet=(char*) net->read_pos;
     command = (enum enum_server_command) (uchar) packet[0];
+    if (command >= COM_END)
+      command= COM_END;				// Wrong command
     DBUG_PRINT("info",("Command on %s = %d (%s)",
 		       vio_description(net->vio), command,
 		       command_name[command]));
@@ -1184,7 +1188,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
     if (alloc_query(thd, packet, packet_length))
       break;					// fatal error is set
     mysql_log.write(thd,command,"%s",thd->query);
-    DBUG_PRINT("query",("%s",thd->query));
+    DBUG_PRINT("query",("%-.4096s",thd->query));
     mysql_parse(thd,thd->query, thd->query_length);
     if (!(specialflag & SPECIAL_NO_PRIOR))
       my_pthread_setprio(pthread_self(),WAIT_PRIOR);
@@ -1381,6 +1385,7 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   case COM_CONNECT:				// Impossible here
   case COM_TIME:				// Impossible from client
   case COM_DELAYED_INSERT:
+  case COM_END:
   default:
     send_error(thd, ER_UNKNOWN_COM_ERROR);
     break;
@@ -2282,6 +2287,7 @@ mysql_execute_command(THD *thd)
     for (auxi=(TABLE_LIST*) aux_tables ; auxi ; auxi=auxi->next)
       auxi->table= auxi->table_list->table;
     if (&lex->select_lex != lex->all_selects_list)
+    {
       for (TABLE_LIST *t= select_lex->get_table_list();
 	   t; t= t->next)
       {
@@ -2292,6 +2298,7 @@ mysql_execute_command(THD *thd)
 	  break;
 	}
       }
+    }
     fix_tables_pointers(lex->all_selects_list);
     if (!thd->fatal_error && (result= new multi_delete(thd,aux_tables,
 						       table_count)))

sql/table.cc

@@ -146,7 +146,7 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
   bzero((char*) keyinfo,n_length);
   outparam->key_info=keyinfo;
   outparam->max_key_length= outparam->total_key_length= 0;
-  key_part= (KEY_PART_INFO*) (keyinfo+keys);
+  key_part= my_reinterpret_cast(KEY_PART_INFO*) (keyinfo+keys);
   strpos=disk_buff+6;
 
   ulong *rec_per_key;

tests/big_record.pl

 #!/usr/bin/perl
 
-# This is a test with stores big records in a blob
+# This is a test with stores big records in a blob.
 # Note that for the default test the mysql server should have been
-# started with at least 'mysqld -O max_allowed_packet=200k'
-
-$host= shift || "";
-$test_db="test";
-$opt_user=$opt_password="";
+# started with at least 'mysqld -O max_allowed_packet=30M' and you should have
+# at least 256M memory in your computer.
 
 use DBI;
-$|= 1;				# Autoflush
+use Getopt::Long;
+
+$opt_host="";
+$opt_user=$opt_password="";
+$opt_db="test";
+$opt_rows=200;			# Test of blobs up to ($rows-1)*100000+1 bytes
+$opt_compress=0;
+$opt_table="test_big_record";
 
-$table="test_big_record";
-$rows=20;			# Test of blobs up to ($rows-1)*10000+1 bytes
+GetOptions("host=s","db=s","user=s", "password=s", "table=s", "rows=i",
+	   "compress") || die "Aborted";
 
 print "Connection to database $test_db\n";
 
-$dbh = DBI->connect("DBI:mysql:$test_db:$host",$opt_user,$opt_password) || die "Can't connect: $DBI::errstr\n";
+$extra_options="";
+$extra_options.=":mysql_compression=1" if ($opt_compress);
 
-$dbh->do("drop table if exists $table");
+$dbh = DBI->connect("DBI:mysql:$opt_db:$host$extra_options",$opt_user,$opt_password) || die "Can't connect: $DBI::errstr\n";
 
-print "Creating table $table\n";
+$dbh->do("drop table if exists $opt_table");
+
+print "Creating table $opt_table\n";
 
 ($dbh->do("\
-CREATE TABLE $table (
+CREATE TABLE $opt_table (
   auto int(5) unsigned NOT NULL DEFAULT '0' auto_increment,
-  test mediumblob,
+  test longblob,
   PRIMARY KEY (auto))"))  or die $DBI::errstr;
 
-print "Inserting $rows records\n";
+print "Inserting $opt_rows records\n";
+
+$|=1;	# Flush output to stdout to be able to monitor process
 
-for ($i=0 ; $i < $rows ; $i++)
+for ($i=0 ; $i < $opt_rows ; $i++)
 {
-  $tmp= chr(65+$i) x ($i*10000+1);
+  $tmp= chr(65+($i % 16)) x ($i*100000+1);
+  print $i," ",length($tmp),"\n";
   $tmp= $dbh->quote($tmp);
-  $dbh->do("insert into $table (test) values ($tmp)") or die $DBI::errstr;
+  $dbh->do("insert into $opt_table (test) values ($tmp)") or die $DBI::errstr;
 }
 
-print "Testing records\n";
+print "Reading records\n";
+
+$sth=$dbh->prepare("select * from $opt_table", { "mysql_use_result" => 1}) or die $dbh->errstr;
 
-$sth=$dbh->prepare("select * from $table") or die $dbh->errstr;
 $sth->execute() or die $sth->errstr;
 
 $i=0;
 while (($row = $sth->fetchrow_arrayref))
 {
   print $row->[0]," ",length($row->[1]),"\n";
-  die "Record $i had wrong data in blob" if ($row->[1] ne (chr(65+$i)) x ($i*10000+1));
+  die "Record $i had wrong data in blob" if ($row->[1] ne (chr(65+($i % 16)) x ($i*100000+1)));
   $i++;
 }
 
-die "Didn't get all rows from server" if ($i != $rows);
+die "Didn't get all rows from server" if ($i != $opt_rows);
 
-$dbh->do("drop table $table") or die $DBI::errstr;
+$dbh->do("drop table $opt_table") or die $DBI::errstr;
 
 print "Test ok\n";
 exit 0;

tools/mysqlmanager.c

@@ -1241,7 +1241,7 @@ static void handle_child(int __attribute__((unused)) sig)
   signal(SIGCHLD,handle_child);
 }
 
-struct manager_thd* manager_thd_new(Vio* vio)
+static struct manager_thd* manager_thd_new(Vio* vio)
 {
   struct manager_thd* tmp;
   if (!(tmp=(struct manager_thd*)my_malloc(sizeof(*tmp),