Fix for bug #2523 '"func_time" test fails on QNX'.

Moved all range checks for TIMESTAMP value to my_gmt_sec().
Also fixed check of upper boundary of TIMESTAMP range (which 
also now will catch datetime values which are too small for
TIMESTAMP in case if time_t is unsigned).  


mysql-test/r/timezone.result:
  Added test which checks if TIMESTAMP range is checked 
  correctly (current time zone is honoured and both upper 
  and lower bounds of TIMESTAMP range are checked).
mysql-test/t/timezone.test:
  Added test which checks if TIMESTAMP range is checked 
  correctly (current time zone is honoured and both upper 
  and lower bounds of TIMESTAMP range are checked).
sql/field.cc:
  Check if datetime value is in TIMESTAMP range has moved to 
  my_gmt_sec() function.
sql/mysql_priv.h:
  Added more constants for checking if datetime is in allowed
  range for TIMESTAMP.
sql/time.cc:
  Check if datetime value is in TIMESTAMP range has moved to 
  my_gmt_sec() function. Fixed check of its return value
  to catch overflows in both directions and also overflows in 
  case of unsigned time_t.

1 files changed, 6 insertions, 0 deletions

diff --git a/mysql-test/r/timezone.result b/mysql-test/r/timezone.result
index 20706408075..15f0d4121c7 100644
--- a/mysql-test/r/timezone.result
+++ b/mysql-test/r/timezone.result
@@ -32,3 +32,9 @@ ts	from_unixtime(ts)
 1048989599	2003-03-30 03:59:59
 1048989601	2003-03-30 04:00:01
 DROP TABLE t1;
+select unix_timestamp('1970-01-01 01:00:00'), 
+unix_timestamp('1970-01-01 01:00:01'),
+unix_timestamp('2038-01-01 00:59:59'),
+unix_timestamp('2038-01-01 01:00:00');
+unix_timestamp('1970-01-01 01:00:00')	unix_timestamp('1970-01-01 01:00:01')	unix_timestamp('2038-01-01 00:59:59')	unix_timestamp('2038-01-01 01:00:00')
+0	1	2145916799	0