CAST(string_argument AS UNSIGNED) didn't work for big integers above the signed range. (Bug #7036)

Produce warnings of wrong cast of strings to signed/unsigned.
Don't block not resolved IP's if DNS server is down (Bug #8467)
Fix compiler problems with MinGW (Bug #8872)


configure.in:
  Fix compiler problems with MinGW (Bug #8872)
include/config-win.h:
  Fix compiler problems with MinGW (Bug #8872)
include/my_global.h:
  Fix compiler problems with MinGW (Bug #8872)
mysql-test/r/cast.result:
  Test for cast to signed/unsigned outside of range (Bug #7036)
mysql-test/t/cast.test:
  Test for cast to signed/unsigned outside of range (Bug #7036)
mysys/default.c:
  Cleanup (combine identical code). 
  Done mainly by Jani
sql/field.h:
  Added cast_to_int_type() to ensure that enums are casted as numbers
sql/hostname.cc:
  Don't block not resolved IP's if DNS server is down (Bug #8467)
sql/item.h:
  Added cast_to_int_type() to ensure that enums are casted as numbers
sql/item_func.cc:
  CAST(string_argument AS UNSIGNED) didn't work for big integers above the
  signed range. (Bug #7036)
  Produce warnings of wrong cast of strings to signed/unsigned
sql/item_func.h:
  CAST(string_argument AS UNSIGNED) didn't work for big integers above the
  signed range. (Bug #7036)

1 files changed, 25 insertions, 1 deletions

diff --git a/mysql-test/t/cast.test b/mysql-test/t/cast.test
index 23bba7d5aff..aeab81585f0 100644
--- a/mysql-test/t/cast.test
+++ b/mysql-test/t/cast.test
@@ -4,7 +4,6 @@
 
 select CAST(1-2 AS UNSIGNED);
 select CAST(CAST(1-2 AS UNSIGNED) AS SIGNED INTEGER);
-select CONVERT('-1',UNSIGNED);
 select cast(-5 as unsigned) | 1, cast(-5 as unsigned) & -1;
 select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
 select ~5, cast(~5 as signed);
@@ -22,6 +21,15 @@ select CONVERT(DATE "2004-01-22 21:45:33",CHAR(4));
 select CONVERT(DATE "2004-01-22 21:45:33",BINARY(4));
 select CAST(DATE "2004-01-22 21:45:33" AS BINARY(4));
 
+# out-of-range cases
+select cast('18446744073709551616' as unsigned);
+select cast('18446744073709551616' as signed);
+select cast('9223372036854775809' as signed);
+select cast('-1' as unsigned);
+select cast('abc' as signed);
+select cast('1a' as signed);
+select cast('' as signed);
+
 #
 # Character set convertion
 #
@@ -118,3 +126,19 @@ select date_add(cast('2004-12-30 12:00:00' as date), interval 0 hour);
 select timediff(cast('2004-12-30 12:00:00' as time), '12:00:00');
 # Still we should not throw away "days" part of time value
 select timediff(cast('1 12:00:00' as time), '12:00:00');
+
+#
+# Bug #7036: Casting from string to unsigned would cap value of result at
+# maximum signed value instead of maximum unsigned value
+#
+select cast(18446744073709551615 as unsigned);
+select cast(18446744073709551615 as signed);
+select cast('18446744073709551615' as unsigned);
+select cast('18446744073709551615' as signed);
+select cast('9223372036854775807' as signed);
+
+select cast(concat('184467440','73709551615') as unsigned);
+select cast(concat('184467440','73709551615') as signed);
+
+select cast(repeat('1',20) as unsigned);
+select cast(repeat('1',20) as signed);