Fixed some test failures after last push (failing tests and valgrind warnings)

Added --strace support to mysql-test-run

mysql-test/mysql-test-run.pl:
  Added support for --strace (usefull for example to check how much memory mysqld was using)
mysql-test/suite/funcs_1/t/is_engines_innodb.test:
  Fixed test case to also work with xtradb
mysql-test/suite/innodb_plugin/t/innodb.test:
  Don't run if we don't have the used character sets.
mysql-test/suite/innodb_plugin/t/innodb_mysql.test:
  Don't run if we don't have the used character sets.
sql/sql_show.cc:
  Extended comment to 160 characters to get full comment from xtradb
storage/xtradb/handler/ha_innodb.cc:
  Fixed valgrind warning.

mysql-test/mysql-test-run.pl

@@ -234,10 +234,12 @@ my $opt_strace_client;
 our $opt_user = "root";
 
 my $opt_valgrind= 0;
-our $opt_valgrind_mysqld= 0;
-my $opt_valgrind_mysqltest= 0;
 my @default_valgrind_args= ("--show-reachable=yes");
 my @valgrind_args;
+our $opt_valgrind_mysqld= 0;
+my $opt_valgrind_mysqltest= 0;
+my $opt_strace= 0;
+my @strace_args;
 my $opt_valgrind_path;
 my $opt_callgrind;
 my %mysqld_logs;
@@ -929,7 +931,9 @@ sub command_line_setup {
              'manual-ddd'               => \$opt_manual_ddd,
 	     'debugger=s'               => \$opt_debugger,
 	     'client-debugger=s'        => \$opt_client_debugger,
+             'strace'			=> \$opt_strace,
              'strace-client:s'          => \$opt_strace_client,
+             'strace-option=s'          => \@strace_args,
              'max-save-core=i'          => \$opt_max_save_core,
              'max-save-datadir=i'       => \$opt_max_save_datadir,
              'max-test-fail=i'          => \$opt_max_test_fail,
@@ -1473,6 +1477,11 @@ sub command_line_setup {
 	       join(" ", @valgrind_args), "\"");
   }
 
+  if (@strace_args)
+  {
+    $opt_strace=1;
+  }
+
   # InnoDB does not bother to do individual de-allocations at exit. Instead it
   # relies on a custom allocator to track every allocation, and frees all at
   # once during exit.
@@ -1724,9 +1733,9 @@ sub executable_setup () {
   if ( -x "../libtool")
   {
     $exe_libtool= "../libtool";
-    if ($opt_valgrind or $glob_debugger)
+    if ($opt_valgrind or $glob_debugger or $opt_strace)
     {
-      mtr_report("Using \"$exe_libtool\" when running valgrind or debugger");
+      mtr_report("Using \"$exe_libtool\" when running valgrind, strace or debugger");
     }
   }
 
@@ -4636,6 +4645,10 @@ sub mysqld_start ($$) {
   {
     valgrind_arguments($args, \$exe);
   }
+  if ( $opt_strace)
+  {
+    strace_arguments($args, \$exe, $mysqld->name());
+  }
 
   mtr_add_arg($args, "--defaults-group-suffix=%s", $mysqld->after('mysqld'));
   mysqld_arguments($args,$mysqld,$extra_opts);
@@ -5575,6 +5588,33 @@ sub valgrind_arguments {
   }
 }
 
+#
+# Modify the exe and args so that program is run in strace
+#
+sub strace_arguments {
+  my $args= shift;
+  my $exe=  shift;
+  my $mysqld_name= shift;
+
+  mtr_add_arg($args, "-f");
+  mtr_add_arg($args, "-o%s/var/log/%s.strace", $glob_mysql_test_dir, $mysqld_name);
+
+  # Add strace options, can be overriden by user
+  mtr_add_arg($args, '%s', $_) for (@strace_args);
+
+  mtr_add_arg($args, $$exe);
+
+  $$exe= "strace";
+
+  if ($exe_libtool)
+  {
+    # Add "libtool --mode-execute" before the test to execute
+    # if running in valgrind(to avoid valgrinding bash)
+    unshift(@$args, "--mode=execute", $$exe);
+    $$exe= $exe_libtool;
+  }
+}
+
 
 #
 # Usage
@@ -5702,9 +5742,6 @@ Options for debugging the product
                         test(s)
   manual-ddd            Let user manually start mysqld in ddd, before running
                         test(s)
-  strace-client=[path]  Create strace output for mysqltest client, optionally
-                        specifying name and path to the trace program to use.
-                        Example: $0 --strace-client=ktrace
   max-save-core         Limit the number of core files saved (to avoid filling
                         up disks for heavily crashing server). Defaults to
                         $opt_max_save_core, set to 0 for no limit. Set
@@ -5732,6 +5769,15 @@ Options for valgrind
   valgrind-path=<EXE>   Path to the valgrind executable
   callgrind             Instruct valgrind to use callgrind
 
+Options for strace
+
+  strace                Run the "mysqld" executables using strace. Default
+                        options are -f -o var/log/'mysqld-name'.strace
+  strace-option=ARGS    Option to give strace, replaces default option(s),
+  strace-client=[path]  Create strace output for mysqltest client, optionally
+                        specifying name and path to the trace program to use.
+                        Example: $0 --strace-client=ktrace
+
 Misc options
   user=USER             User for connecting to mysqld(default: $opt_user)
   comment=STR           Write STR to the output

mysql-test/suite/funcs_1/t/is_engines_innodb.test

@@ -11,5 +11,6 @@
 let $engine_type= InnoDB;
 --source include/have_innodb.inc
 --vertical_results
+--replace_regex /XtraDB engine based on InnoDB plugin. //
 eval SELECT * FROM information_schema.engines
 WHERE ENGINE = '$engine_type';

mysql-test/suite/innodb_plugin/t/innodb.test

@@ -16,6 +16,8 @@
 -- source include/have_innodb_plugin.inc
 
 let $MYSQLD_DATADIR= `select @@datadir`;
+let collation=utf8_unicode_ci;
+--source include/have_collation.inc
 
 # Save the original values of some variables in order to be able to
 # estimate how much they have changed during the tests. Previously this

mysql-test/suite/innodb_plugin/t/innodb_mysql.test

@@ -6,6 +6,8 @@
 #
 
 -- source include/have_innodb_plugin.inc
+-- source include/have_query_cache.inc
+
 let $engine_type= InnoDB;
 let $other_engine_type= MEMORY;
 # InnoDB does support FOREIGN KEYFOREIGN KEYs

sql/sql_show.cc

@@ -6331,7 +6331,7 @@ ST_FIELD_INFO engines_fields_info[]=
 {
   {"ENGINE", 64, MYSQL_TYPE_STRING, 0, 0, "Engine", SKIP_OPEN_TABLE},
   {"SUPPORT", 8, MYSQL_TYPE_STRING, 0, 0, "Support", SKIP_OPEN_TABLE},
-  {"COMMENT", 80, MYSQL_TYPE_STRING, 0, 0, "Comment", SKIP_OPEN_TABLE},
+  {"COMMENT", 160, MYSQL_TYPE_STRING, 0, 0, "Comment", SKIP_OPEN_TABLE},
   {"TRANSACTIONS", 3, MYSQL_TYPE_STRING, 0, 1, "Transactions", SKIP_OPEN_TABLE},
   {"XA", 3, MYSQL_TYPE_STRING, 0, 1, "XA", SKIP_OPEN_TABLE},
   {"SAVEPOINTS", 3 ,MYSQL_TYPE_STRING, 0, 1, "Savepoints", SKIP_OPEN_TABLE},

storage/xtradb/handler/ha_innodb.cc

@@ -3511,6 +3511,7 @@ retry:
 		save space, because all row reference buffers are allocated
 		based on ref_length. */
 
+		if (primary_key < MAX_KEY)
                   ref_length = table->key_info[primary_key].key_length;
 	} else {
 		if (primary_key != MAX_KEY) {