diff --git a/client/mysqladmin.cc b/client/mysqladmin.cc
index 53bf59af67a..8d2e040b21f 100644
--- a/client/mysqladmin.cc
+++ b/client/mysqladmin.cc
@@ -161,7 +161,7 @@ static struct my_option my_long_options[] =
    NO_ARG, 0, 0, 0, 0, 0, 0},
 #endif
   {"port", 'P', "Port number to use for connection.", (gptr*) &tcp_port,
-   (gptr*) &tcp_port, 0, GET_UINT, REQUIRED_ARG, MYSQL_PORT, 0, 0, 0, 0, 0},
+   (gptr*) &tcp_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"protocol", OPT_MYSQL_PROTOCOL, "The protocol of connection (tcp,socket,pipe,memory).",
     0, 0, 0, GET_STR,  REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"relative", 'r',
diff --git a/client/mysqlbinlog.cc b/client/mysqlbinlog.cc
index 7eb26d30cf9..ae482a155d5 100644
--- a/client/mysqlbinlog.cc
+++ b/client/mysqlbinlog.cc
@@ -67,7 +67,7 @@ static const char* database= 0;
 static my_bool force_opt= 0, short_form= 0, remote_opt= 0;
 static ulonglong offset = 0;
 static const char* host = 0;
-static int port = MYSQL_PORT;
+static int port= 0;
 static const char* sock= 0;
 static const char* user = 0;
 static char* pass = 0;
@@ -688,7 +688,7 @@ static struct my_option my_long_options[] =
   {"password", 'p', "Password to connect to remote server.",
    0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
   {"port", 'P', "Use port to connect to the remote server.",
-   (gptr*) &port, (gptr*) &port, 0, GET_INT, REQUIRED_ARG, MYSQL_PORT, 0, 0,
+   (gptr*) &port, (gptr*) &port, 0, GET_INT, REQUIRED_ARG, 0, 0, 0,
    0, 0, 0},
   {"position", 'j', "Deprecated. Use --start-position instead.",
    (gptr*) &start_position, (gptr*) &start_position, 0, GET_ULL,
diff --git a/client/mysqlcheck.c b/client/mysqlcheck.c
index 1324060eb55..2ad35098c33 100644
--- a/client/mysqlcheck.c
+++ b/client/mysqlcheck.c
@@ -122,7 +122,7 @@ static struct my_option my_long_options[] =
    NO_ARG, 0, 0, 0, 0, 0, 0},
 #endif
   {"port", 'P', "Port number to use for connection.", (gptr*) &opt_mysql_port,
-   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, MYSQL_PORT, 0, 0, 0, 0,
+   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0,
    0},
   {"protocol", OPT_MYSQL_PROTOCOL, "The protocol of connection (tcp,socket,pipe,memory).",
    0, 0, 0, GET_STR,  REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
diff --git a/client/mysqldump.c b/client/mysqldump.c
index 5d3c542dc4d..cce5cf49d43 100644
--- a/client/mysqldump.c
+++ b/client/mysqldump.c
@@ -331,7 +331,7 @@ static struct my_option my_long_options[] =
    NO_ARG, 0, 0, 0, 0, 0, 0},
 #endif
   {"port", 'P', "Port number to use for connection.", (gptr*) &opt_mysql_port,
-   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, MYSQL_PORT, 0, 0, 0, 0,
+   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0,
    0},
   {"protocol", OPT_MYSQL_PROTOCOL, "The protocol of connection (tcp,socket,pipe,memory).",
    0, 0, 0, GET_STR,  REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
diff --git a/client/mysqlimport.c b/client/mysqlimport.c
index 958f987d16b..8694093f06b 100644
--- a/client/mysqlimport.c
+++ b/client/mysqlimport.c
@@ -121,7 +121,7 @@ static struct my_option my_long_options[] =
    NO_ARG, 0, 0, 0, 0, 0, 0},
 #endif
   {"port", 'P', "Port number to use for connection.", (gptr*) &opt_mysql_port,
-   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, MYSQL_PORT, 0, 0, 0, 0,
+   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0,
    0},
   {"protocol", OPT_MYSQL_PROTOCOL, "The protocol of connection (tcp,socket,pipe,memory).",
    0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
diff --git a/client/mysqlshow.c b/client/mysqlshow.c
index 8369d918d6f..504f0d9844b 100644
--- a/client/mysqlshow.c
+++ b/client/mysqlshow.c
@@ -188,7 +188,7 @@ static struct my_option my_long_options[] =
    "Password to use when connecting to server. If password is not given it's asked from the tty.",
    0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
   {"port", 'P', "Port number to use for connection.", (gptr*) &opt_mysql_port,
-   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, MYSQL_PORT, 0, 0, 0, 0,
+   (gptr*) &opt_mysql_port, 0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0,
    0},
 #ifdef __WIN__
   {"pipe", 'W', "Use named pipes to connect to server.", 0, 0, 0, GET_NO_ARG,
diff --git a/client/mysqltest.c b/client/mysqltest.c
index f6d28101fa0..ba1b92b31a3 100644
--- a/client/mysqltest.c
+++ b/client/mysqltest.c
@@ -2763,7 +2763,7 @@ static struct my_option my_long_options[] =
   {"password", 'p', "Password to use when connecting to server.",
    0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
   {"port", 'P', "Port number to use for connection.", (gptr*) &port,
-   (gptr*) &port, 0, GET_INT, REQUIRED_ARG, MYSQL_PORT, 0, 0, 0, 0, 0},
+   (gptr*) &port, 0, GET_INT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
   {"ps-protocol", OPT_PS_PROTOCOL, "Use prepared statements protocol for communication",
    (gptr*) &ps_protocol, (gptr*) &ps_protocol, 0,
    GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
diff --git a/include/config-win.h b/include/config-win.h
index 5c2f8e00e86..edfb4ecc5c7 100644
--- a/include/config-win.h
+++ b/include/config-win.h
@@ -279,10 +279,10 @@ inline double ulonglong2double(ulonglong value)
 			  *((T)+4)=(uchar) (((A) >> 32)); }
 #define int8store(T,A)	*((ulonglong *) (T))= (ulonglong) (A)
 
-#define doubleget(V,M)	{ *((long *) &V) = *((long*) M); \
-			  *(((long *) &V)+1) = *(((long*) M)+1); }
-#define doublestore(T,V) { *((long *) T) = *((long*) &V); \
-			   *(((long *) T)+1) = *(((long*) &V)+1); }
+#define doubleget(V,M)	do { *((long *) &V) = *((long*) M); \
+			    *(((long *) &V)+1) = *(((long*) M)+1); } while(0)
+#define doublestore(T,V) do { *((long *) T) = *((long*) &V); \
+			      *(((long *) T)+1) = *(((long*) &V)+1); } while(0)
 #define float4get(V,M) { *((long *) &(V)) = *((long*) (M)); }
 #define floatstore(T,V) memcpy((byte*)(T), (byte*)(&V), sizeof(float))
 #define floatget(V,M)   memcpy((byte*)(&V), (byte*)(M), sizeof(float))
diff --git a/mysql-test/r/create.result b/mysql-test/r/create.result
index a201af78518..c981d3092a7 100644
--- a/mysql-test/r/create.result
+++ b/mysql-test/r/create.result
@@ -743,3 +743,22 @@ t2	CREATE TABLE `t2` (
   `a2` int(11) default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1, t2;
+create table t1 (i int) engine=myisam max_rows=100000000000;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `i` int(11) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=4294967295
+alter table t1 max_rows=100;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `i` int(11) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=100
+alter table t1 max_rows=100000000000;
+show create table t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `i` int(11) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 MAX_ROWS=4294967295
+drop table t1;
diff --git a/mysql-test/r/ctype_recoding.result b/mysql-test/r/ctype_recoding.result
index da0007fdfbe..1b92da2a7a3 100644
--- a/mysql-test/r/ctype_recoding.result
+++ b/mysql-test/r/ctype_recoding.result
@@ -181,11 +181,18 @@ select * from t1 where a=_koi8r'
 a
 вася
 select * from t1 where a=concat(_koi8r'вася');
-ERROR HY000: Illegal mix of collations (cp1251_general_ci,IMPLICIT) and (koi8r_general_ci,COERCIBLE) for operation '='
+a
+вася
 select * from t1 where a=_latin1'вася';
 ERROR HY000: Illegal mix of collations (cp1251_general_ci,IMPLICIT) and (latin1_swedish_ci,COERCIBLE) for operation '='
 drop table t1;
 set names latin1;
+create table t1 (a char(10) character set utf8 collate utf8_bin);
+insert into t1 values ('       xxx');
+select * from t1 where a=lpad('xxx',10,' ');
+a
+       xxx
+drop table t1;
 set names koi8r;
 create table t1 (c1 char(10) character set cp1251);
 insert into t1 values ('ъ');
diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result
index 742f68be445..994c375da83 100644
--- a/mysql-test/r/ps.result
+++ b/mysql-test/r/ps.result
@@ -825,3 +825,10 @@ execute stmt;
 drop table t1;
 set names default;
 deallocate prepare stmt;
+create table t1 (id int);
+prepare ins_call from "insert into t1 (id) values (1)";
+execute ins_call;
+select row_count();
+row_count()
+1
+drop table t1;
diff --git a/mysql-test/t/create.test b/mysql-test/t/create.test
index 470a7bcbb59..6f3bc67cb30 100644
--- a/mysql-test/t/create.test
+++ b/mysql-test/t/create.test
@@ -631,3 +631,17 @@ show create table t2;
 drop table t1, t2;
 
 # End of 4.1 tests
+
+#
+# Bug #14155: Maximum value of MAX_ROWS handled incorrectly on 64-bit
+# platforms
+#
+create table t1 (i int) engine=myisam max_rows=100000000000;
+show create table t1;
+alter table t1 max_rows=100;
+show create table t1;
+alter table t1 max_rows=100000000000;
+show create table t1;
+drop table t1;
+
+# End of 5.0 tests
diff --git a/mysql-test/t/ctype_recoding.test b/mysql-test/t/ctype_recoding.test
index 9949ef88da4..5648cea7fd3 100644
--- a/mysql-test/t/ctype_recoding.test
+++ b/mysql-test/t/ctype_recoding.test
@@ -144,8 +144,7 @@ create table t1 (a char(10) character set cp1251);
 insert into t1 values (_koi8r'вася');
 # this is possible:
 select * from t1 where a=_koi8r'вася';
-# this is not possible, because we have a function, not just a constant:
---error 1267
+# this is possible, because we have a function with constant arguments:
 select * from t1 where a=concat(_koi8r'вася');
 # this is not posible, cannot convert _latin1'вася' into cp1251:
 --error 1267
@@ -153,6 +152,14 @@ select * from t1 where a=_latin1'
 drop table t1;
 set names latin1;
 
+#
+# Bug#10446 Illegal mix of collations
+#
+create table t1 (a char(10) character set utf8 collate utf8_bin);
+insert into t1 values ('       xxx');
+select * from t1 where a=lpad('xxx',10,' ');
+drop table t1;
+
 #
 # Check more automatic conversion
 #
diff --git a/mysql-test/t/ps.test b/mysql-test/t/ps.test
index 774424a8d55..22d0abf645e 100644
--- a/mysql-test/t/ps.test
+++ b/mysql-test/t/ps.test
@@ -871,3 +871,15 @@ set names default;
 deallocate prepare stmt;
 
 # End of 4.1 tests
+
+#
+# Bug #14956: ROW_COUNT() returns incorrect result after EXECUTE of prepared
+# statement
+#
+create table t1 (id int);
+prepare ins_call from "insert into t1 (id) values (1)";
+execute ins_call;
+select row_count();
+drop table t1;
+
+# End of 5.0 tests
diff --git a/sql/item.cc b/sql/item.cc
index 848096e71dc..692f7b58928 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -601,16 +601,8 @@ bool Item::eq(const Item *item, bool binary_cmp) const
 
 Item *Item::safe_charset_converter(CHARSET_INFO *tocs)
 {
-  /*
-    Allow conversion from and to "binary".
-    Don't allow automatic conversion to non-Unicode charsets,
-    as it potentially loses data.
-  */
-  if (collation.collation != &my_charset_bin &&
-      tocs != &my_charset_bin &&
-      !(tocs->state & MY_CS_UNICODE))
-    return NULL; // safe conversion is not possible
-  return new Item_func_conv_charset(this, tocs);
+  Item_func_conv_charset *conv= new Item_func_conv_charset(this, tocs, 1);
+  return conv->safe ? conv : NULL;
 }
 
 
diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc
index c33b7403b9c..8c0dea4efb2 100644
--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@@ -2316,6 +2316,8 @@ String *Item_func_conv::val_str(String *str)
 String *Item_func_conv_charset::val_str(String *str)
 {
   DBUG_ASSERT(fixed == 1);
+  if (use_cached_value)
+    return null_value ? 0 : &str_value;
   String *arg= args[0]->val_str(str);
   uint dummy_errors;
   if (!arg)
diff --git a/sql/item_strfunc.h b/sql/item_strfunc.h
index 522b17bf80e..50ec0b36ce8 100644
--- a/sql/item_strfunc.h
+++ b/sql/item_strfunc.h
@@ -652,10 +652,40 @@ public:
 
 class Item_func_conv_charset :public Item_str_func
 {
+  bool use_cached_value;
 public:
+  bool safe;
   CHARSET_INFO *conv_charset; // keep it public
-  Item_func_conv_charset(Item *a, CHARSET_INFO *cs) :Item_str_func(a)
-  { conv_charset=cs; }
+  Item_func_conv_charset(Item *a, CHARSET_INFO *cs) :Item_str_func(a) 
+  { conv_charset= cs; use_cached_value= 0; safe= 0; }
+  Item_func_conv_charset(Item *a, CHARSET_INFO *cs, bool cache_if_const) 
+    :Item_str_func(a) 
+  {
+    DBUG_ASSERT(args[0]->fixed);
+    conv_charset= cs;
+    if (cache_if_const && args[0]->const_item())
+    {
+      uint errors= 0;
+      String tmp, *str= args[0]->val_str(&tmp);
+      if (!str || str_value.copy(str->ptr(), str->length(),
+                                 str->charset(), conv_charset, &errors))
+        null_value= 1;
+      use_cached_value= 1;
+      safe= (errors == 0);
+    }
+    else
+    {
+      use_cached_value= 0;
+      /*
+        Conversion from and to "binary" is safe.
+        Conversion to Unicode is safe.
+        Other kind of conversions are potentially lossy.
+      */
+      safe= (args[0]->collation.collation == &my_charset_bin ||
+             cs == &my_charset_bin ||
+             (cs->state & MY_CS_UNICODE));
+    }
+  }
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "convert"; }
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index 57d7059dd8f..2e2a6f4d1b1 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -4844,11 +4844,15 @@ end_with_restore_list:
 
 
   /*
-    The return value for ROW_COUNT() is "implementation dependent" if
-    the statement is not DELETE, INSERT or UPDATE (or a CALL executing
-    such a statement), but -1 is what JDBC and ODBC wants.
+    The return value for ROW_COUNT() is "implementation dependent" if the
+    statement is not DELETE, INSERT or UPDATE, but -1 is what JDBC and ODBC
+    wants.
+
+    We do not change the value for a CALL or EXECUTE statement, so the value
+    generated by the last called (or executed) statement is preserved.
    */
-  if (lex->sql_command != SQLCOM_CALL && uc_update_queries[lex->sql_command]<2)
+  if (lex->sql_command != SQLCOM_CALL && lex->sql_command != SQLCOM_EXECUTE &&
+      uc_update_queries[lex->sql_command]<2)
     thd->row_count_func= -1;
   goto cleanup;
 
diff --git a/sql/table.cc b/sql/table.cc
index c1704cbd2c9..1b0340a47fe 100644
--- a/sql/table.cc
+++ b/sql/table.cc
@@ -1879,10 +1879,10 @@ File create_frm(THD *thd, const char *name, const char *db,
 
 #if SIZEOF_OFF_T > 4
   /* Fix this when we have new .frm files;  Current limit is 4G rows (QQ) */
-  if (create_info->max_rows > ~(ulong) 0)
-    create_info->max_rows= ~(ulong) 0;
-  if (create_info->min_rows > ~(ulong) 0)
-    create_info->min_rows= ~(ulong) 0;
+  if (create_info->max_rows > UINT_MAX32)
+    create_info->max_rows= UINT_MAX32;
+  if (create_info->min_rows > UINT_MAX32)
+    create_info->min_rows= UINT_MAX32;
 #endif
   /*
     Ensure that raid_chunks can't be larger than 255, as this would cause