bk commit into 4.1 tree (jimw:1.2311) BUG#11402

[Jim Winstead]

Below is the list of changes that have just been committed into a local
4.1 repository of jimw. When jimw does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
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see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html

ChangeSet
  1.2311 05/06/22 20:00:21 jimw@stripped +3 -0
  Fix multiplication of abs() by a negative value. (Bug #11402)

  sql/item_func.cc
    1.252 05/06/22 20:00:19 jimw@stripped +0 -3
    Don't set result of abs() to unsigned. Result should still be
    a signed value, even if always positive.

  mysql-test/t/func_math.test
    1.15 05/06/22 20:00:19 jimw@stripped +5 -0
    Add new regression test

  mysql-test/r/func_math.result
    1.23 05/06/22 20:00:19 jimw@stripped +3 -0
    Add new results

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	jimw
# Host:	rama.(none)
# Root:	/home/jimw/my/mysql-4.1-11402

--- 1.251/sql/item_func.cc	2005-06-05 10:38:40 -07:00
+++ 1.252/sql/item_func.cc	2005-06-22 20:00:19 -07:00
@@ -914,10 +914,7 @@
   max_length=args[0]->max_length;
   hybrid_type= REAL_RESULT;
   if (args[0]->result_type() == INT_RESULT)
-  {
     hybrid_type= INT_RESULT;
-    unsigned_flag= 1;
-  }
 }
 
 

--- 1.22/mysql-test/r/func_math.result	2005-04-19 02:44:50 -07:00
+++ 1.23/mysql-test/r/func_math.result	2005-06-22 20:00:19 -07:00
@@ -137,3 +137,6 @@
 round(1, 6)
 1.000000
 drop table t1;
+select abs(-2) * -2;
+abs(-2) * -2
+-4

--- 1.14/mysql-test/t/func_math.test	2005-04-19 02:44:50 -07:00
+++ 1.15/mysql-test/t/func_math.test	2005-06-22 20:00:19 -07:00
@@ -71,3 +71,8 @@
 show create table t1;
 select * from t1;
 drop table t1;
+
+#
+# Bug #11402: abs() forces rest of calculation to unsigned
+#
+select abs(-2) * -2;