CAST() now produces warnings when casting a wrong INTEGER or CHAR values. This also applies to implicite string to number casts. (Bug #5912)
ALTER TABLE now fails in STRICT mode if it generates warnings.
Inserting a zero date in a DATE, DATETIME or TIMESTAMP column during TRADITIONAL mode now produces an error. (Bug #5933)


mysql-test/r/bigint.result:
  New warning added
mysql-test/r/cast.result:
  Added testing of wrong CAST's of strings to numbers and numbers to strings
mysql-test/r/create.result:
  Added test for wrong default values (#5902)
mysql-test/r/func_if.result:
  Changed tests to produce less warnings
mysql-test/r/func_misc.result:
  New warning
mysql-test/r/func_str.result:
  Added missing drop table
  Changed test to produce less warnings
  New warnings
mysql-test/r/ndb_index_unique.result:
  Removed wrong default usage
mysql-test/r/ps_1general.result:
  Changed tests to produce less warnings
mysql-test/r/row.result:
  New warnings
mysql-test/r/rpl_session_var.result:
  Changed tests to produce less warnings
mysql-test/r/strict.result:
  New tests for CAST() and zero date handling
mysql-test/r/subselect.result:
  Changed tests to produce less warnings
mysql-test/r/type_ranges.result:
  Changed tests to produce less warnings
mysql-test/t/cast.test:
  Added testing of wrong CAST's of strings to numbers and numbers to strings
mysql-test/t/create.test:
  Added test for wrong default values (#5902)
mysql-test/t/func_if.test:
  Changed tests to produce less warnings
mysql-test/t/func_str.test:
  Added missing drop table
  Changed test to produce less warnings
  New warnings
mysql-test/t/ndb_index_unique.test:
  Removed wrong default usage
mysql-test/t/ps_1general.test:
  Changed tests to produce less warnings
mysql-test/t/rpl_session_var.test:
  Changed tests to produce less warnings
mysql-test/t/strict.test:
  New tests for CAST() and zero date handling
mysql-test/t/subselect.test:
  Changed tests to produce less warnings
mysql-test/t/type_ranges.test:
  Changed tests to produce less warnings
sql/Makefile.am:
  Added new include file
sql/field.cc:
  Added warnings for zero dates for DATE, DATETIME and TIMESTAMP
  Moved Field_blob::max_length() to a more appropriate position
  Changed type for 'level' in set_warning() to avoid casts
sql/field.h:
  Changed type for 'level' in set_warning() to avoid casts
sql/field_conv.cc:
  Copy date and datetime fields through string in 'traditional' mode to detect zero dates
sql/item.cc:
  Removed compiler warnings
  Give warnings for wrong CAST of strings -> number
sql/item.h:
  Moved Item_string::val_real() and ::val_int() to item.cc
sql/item_row.cc:
  Better detection of null values (which doesn't produce warnings)
sql/item_sum.cc:
  Better detection of null values (which doesn't produce warnings)
sql/item_timefunc.cc:
  Give warnings for wrong CAST of number -> string
sql/my_decimal.cc:
  Fixed typo in comment
sql/mysql_priv.h:
  Removed prototype for static function
  Moved defines for error handling to sql_error.h (to be able to use these in field.h)
sql/mysqld.cc:
  Simplify code
sql/sql_class.h:
  Moved to sql_error.h
sql/sql_load.cc:
  Removed wrong cast
sql/sql_parse.cc:
  Fixed wrong printf()
sql/sql_table.cc:
  Made mysql_prepare_table() static
  Changed references to pointers to make code more readable
  ALTER TABLE now aborts if one gets warnings in STRICT mode
sql/time.cc:
  Fixed possible wrong call
sql/unireg.cc:
  Removed one call to current_thd
  Give errors if one uses a wrong DEFAULT value