Changes from the innodb-5.0-ss115 snapshot.

 Fixed bugs:
 BUG#15991: "innodb-file-per-table + symlink database + rename = crash"
 BUG#15650: "DELETE with LEFT JOIN crashes server"
 BUG#15308: "Problem of Order with Enum Column in Primary Key"
 BUG#14189: "VARBINARY and BINARY variables: trailing space ignored"

1 files changed, 102 insertions, 62 deletions

diff --git a/sql/ha_innodb.cc b/sql/ha_innodb.cc
index 744bd242fca..4ae0bb52d17 100644
--- a/sql/ha_innodb.cc
+++ b/sql/ha_innodb.cc
@@ -1218,7 +1218,7 @@ innobase_init(void)
 				"innobase_buffer_pool_size can't be over 4GB"
 				" on 32-bit systems");
 
-			goto error;
+			DBUG_RETURN(0);
 		}
 
 		if (innobase_log_file_size > UINT_MAX32) {
@@ -1226,7 +1226,7 @@ innobase_init(void)
 				"innobase_log_file_size can't be over 4GB"
 				" on 32-bit systems");
 
-			goto error;
+			DBUG_RETURN(0);
 		}
 	}
 
@@ -1391,6 +1391,7 @@ innobase_init(void)
 
 	ut_a(DATA_MYSQL_LATIN1_SWEDISH_CHARSET_COLL ==
 					my_charset_latin1.number);
+	ut_a(DATA_MYSQL_BINARY_CHARSET_COLL == my_charset_bin.number);
 
 	/* Store the latin1_swedish_ci character ordering table to InnoDB. For
 	non-latin1_swedish_ci charsets we use the MySQL comparison functions,
@@ -2847,8 +2848,6 @@ ha_innobase::store_key_val_for_row(
 	char*		buff_start	= buff;
 	enum_field_types mysql_type;
 	Field*		field;
-	ulint		blob_len;
-	byte*		blob_data;
 	ibool		is_null;
 
   	DBUG_ENTER("store_key_val_for_row");
@@ -2903,14 +2902,18 @@ ha_innobase::store_key_val_for_row(
 			ulint	len;
 			byte*	data;
 			ulint	key_len;
+			ulint	true_len;
 			CHARSET_INFO*	cs;
 			int	error=0;
 
+			key_len = key_part->length;
+
 			if (is_null) {
-				buff += key_part->length + 2;
+				buff += key_len + 2;
 				
 				continue;
 			}
+			cs = field->charset();
 
 			lenlen = (ulint)
 				(((Field_varstring*)field)->length_bytes);
@@ -2920,32 +2923,33 @@ ha_innobase::store_key_val_for_row(
 				+ (ulint)get_field_offset(table, field)),
 				lenlen);
 
+			true_len = len;
+
+			/* For multi byte character sets we need to calculate
+			the true length of the key */
+
+			if (len > 0 && cs->mbmaxlen > 1) {
+				true_len = (ulint) cs->cset->well_formed_len(cs,
+						(const char *) data,
+						(const char *) data + len,
+						key_len / cs->mbmaxlen, 
+						&error);
+			}
+
 			/* In a column prefix index, we may need to truncate
 			the stored value: */
-		
-			cs = key_part->field->charset();
-
-			if (cs->mbmaxlen > 1 && key_part->length > 0) {
-				key_len = (ulint) cs->cset->well_formed_len(cs, 
-					(const char *) data,
-					(const char *) data + key_part->length,
-					key_part->length / cs->mbmaxlen, 
-					&error);
-			} else {
-				key_len = key_part->length;
-			}
 
-			if (len > key_len) {
-				len = key_len;
+			if (true_len > key_len) {
+				true_len = key_len;
 			}
 
 			/* The length in a key value is always stored in 2
 			bytes */
 
-			row_mysql_store_true_var_len((byte*)buff, len, 2);
+			row_mysql_store_true_var_len((byte*)buff, true_len, 2);
 			buff += 2;
 
-			memcpy(buff, data, len);
+			memcpy(buff, data, true_len);
 
 			/* Note that we always reserve the maximum possible
 			length of the true VARCHAR in the key value, though
@@ -2953,7 +2957,7 @@ ha_innobase::store_key_val_for_row(
 			actual data. The rest of the space was reset to zero
 			in the bzero() call above. */
 
-			buff += key_part->length;
+			buff += key_len;
 
 		} else if (mysql_type == FIELD_TYPE_TINY_BLOB
 		    || mysql_type == FIELD_TYPE_MEDIUM_BLOB
@@ -2963,58 +2967,66 @@ ha_innobase::store_key_val_for_row(
 			CHARSET_INFO*	cs;
 			ulint		key_len;
 			ulint		len;
+			ulint		true_len;
 			int		error=0;
+			ulint		blob_len;
+			byte*		blob_data;
 
 			ut_a(key_part->key_part_flag & HA_PART_KEY_SEG);
 
+			key_len = key_part->length;
+
 		        if (is_null) {
-				buff += key_part->length + 2;
+				buff += key_len + 2;
 				 
 				continue;
 			}
 		    
+			cs = field->charset();
+
 		        blob_data = row_mysql_read_blob_ref(&blob_len,
 				(byte*) (record
 				+ (ulint)get_field_offset(table, field)),
 					(ulint) field->pack_length());
 
+			true_len = blob_len;
+
 			ut_a(get_field_offset(table, field)
 						     == key_part->offset);
 
+			/* For multi byte character sets we need to calculate
+			the true length of the key */
+			
+			if (blob_len > 0 && cs->mbmaxlen > 1) {
+				true_len = (ulint) cs->cset->well_formed_len(cs,
+						(const char *) blob_data,
+						(const char *) blob_data 
+							+ blob_len,
+						key_len / cs->mbmaxlen,
+						&error);
+			}
+
 			/* All indexes on BLOB and TEXT are column prefix
 			indexes, and we may need to truncate the data to be
 			stored in the key value: */
 
-			cs = key_part->field->charset();
-			
-			if (cs->mbmaxlen > 1 && key_part->length > 0) {
-				key_len = (ulint) cs->cset->well_formed_len(cs, 
-					(const char *) blob_data,
-					(const char *) blob_data 
-						+ key_part->length,
-					key_part->length / cs->mbmaxlen,
-					&error);
-			} else {
-				key_len = key_part->length;
-			}
-
-			if (blob_len > key_len) {
-				blob_len = key_len;
+			if (true_len > key_len) {
+				true_len = key_len;
 			}
 
 			/* MySQL reserves 2 bytes for the length and the
 			storage of the number is little-endian */
 
 			innobase_write_to_2_little_endian(
-					(byte*)buff, (ulint)blob_len);
+					(byte*)buff, true_len);
 			buff += 2;
 
-			memcpy(buff, blob_data, blob_len);
+			memcpy(buff, blob_data, true_len);
 
 			/* Note that we always reserve the maximum possible
 			length of the BLOB prefix in the key value. */
 
-			buff += key_part->length;
+			buff += key_len;
 		} else {
 			/* Here we handle all other data types except the
 			true VARCHAR, BLOB and TEXT. Note that the column
@@ -3022,38 +3034,64 @@ ha_innobase::store_key_val_for_row(
 			index. */
 
 			CHARSET_INFO*		cs;
-			ulint			len;
+			ulint			true_len;
+			ulint			key_len;
 			const mysql_byte*	src_start;
 			int			error=0;
+			enum_field_types	real_type;
+
+			key_len = key_part->length;
 
 		        if (is_null) {
-				 buff += key_part->length;
+				 buff += key_len;
 				 
 				 continue;
 			}
 
-			cs = key_part->field->charset();
 			src_start = record + key_part->offset;
+			real_type = field->real_type();
+			true_len = key_len;
 
-			if (key_part->length > 0 && cs->mbmaxlen > 1) {
-				len = (ulint) cs->cset->well_formed_len(cs, 
-					(const char *) src_start,
-					(const char *) src_start + key_part->length,
-					key_part->length / cs->mbmaxlen, 
-					&error);
-			} else {
-				len = key_part->length;
+			/* Character set for the field is defined only
+			to fields whose type is string and real field
+			type is not enum or set. For these fields check
+			if character set is multi byte. */
+
+			if (real_type != FIELD_TYPE_ENUM 
+				&& real_type != FIELD_TYPE_SET
+				&& ( mysql_type == MYSQL_TYPE_VAR_STRING
+					|| mysql_type == MYSQL_TYPE_STRING)) {
+
+				cs = field->charset();
+
+				/* For multi byte character sets we need to 
+				calculate the true length of the key */
+
+				if (key_len > 0 && cs->mbmaxlen > 1) {
+
+					true_len = (ulint) 
+						cs->cset->well_formed_len(cs,
+							(const char *)src_start,
+							(const char *)src_start 
+								+ key_len,
+							key_len / cs->mbmaxlen,
+							&error);
+				}
 			}
 
-			memcpy(buff, src_start, len);
-			buff+=len;
+			memcpy(buff, src_start, true_len);
+			buff += true_len;
 
-			/* Pad the unused space with spaces */
+			/* Pad the unused space with spaces. Note that no 
+			padding is ever needed for UCS-2 because in MySQL, 
+			all UCS2 characters are 2 bytes, as MySQL does not 
+			support surrogate pairs, which are needed to represent
+			characters in the range U+10000 to U+10FFFF. */
 
-			if (len < key_part->length) {
-				len = key_part->length - len;
-				memset(buff, ' ', len);
-				buff+=len;
+			if (true_len < key_len) {
+				ulint pad_len = key_len - true_len;
+				memset(buff, ' ', pad_len);
+				buff += pad_len;
 			}
 		}
   	}
@@ -3770,9 +3808,8 @@ ha_innobase::delete_row(
 }
 
 /**************************************************************************
-Removes a new lock set on a row. This can be called after a row has been read
-in the processing of an UPDATE or a DELETE query, if the option
-innodb_locks_unsafe_for_binlog is set. */
+Removes a new lock set on a row. This method does nothing unless the 
+option innodb_locks_unsafe_for_binlog is set.*/
 
 void
 ha_innobase::unlock_row(void)
@@ -3794,6 +3831,9 @@ ha_innobase::unlock_row(void)
 	if (srv_locks_unsafe_for_binlog) {
 		row_unlock_for_mysql(prebuilt, FALSE);
 	}
+
+	DBUG_VOID_RETURN;
+
 }
 
 /**********************************************************************