bk commit into 4.1 tree (jimw:1.2458) BUG#13344

[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
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ChangeSet
  1.2458 05/09/22 15:59:13 jimw@stripped +3 -0
  Fix CAST(1.0e+300 TO SIGNED). (Bug #13344)

  sql/item.h
    1.191 05/09/22 15:59:10 jimw@stripped +8 -0
    Cap Item_real::val_int() to LONGLONG_MIN and LONGLONG_MAX.

  mysql-test/t/cast.test
    1.19 05/09/22 15:59:10 jimw@stripped +5 -0
    Add regression test

  mysql-test/r/cast.result
    1.23 05/09/22 15:59:10 jimw@stripped +3 -0
    Update 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-4.1-13344

--- 1.190/sql/item.h	2005-08-29 03:44:43 -07:00
+++ 1.191/sql/item.h	2005-09-22 15:59:10 -07:00
@@ -703,6 +703,14 @@
   longlong val_int()
   {
     DBUG_ASSERT(fixed == 1);
+    if (value <= (double) LONGLONG_MIN)
+    {
+       return LONGLONG_MIN;
+    }
+    else if (value >= (double) (ulonglong) LONGLONG_MAX)
+    {
+      return LONGLONG_MAX;
+    }
     return (longlong) (value+(value > 0 ? 0.5 : -0.5));
   }
   String *val_str(String*);

--- 1.22/mysql-test/r/cast.result	2005-04-29 07:03:15 -07:00
+++ 1.23/mysql-test/r/cast.result	2005-09-22 15:59:10 -07:00
@@ -252,3 +252,6 @@
 -7335632962598440505
 Warnings:
 Warning	1105	Cast to signed converted positive out-of-range integer to it's negative
complement
+select cast(1.0e+300 as signed int);
+cast(1.0e+300 as signed int)
+9223372036854775807

--- 1.18/mysql-test/t/cast.test	2005-09-15 07:17:10 -07:00
+++ 1.19/mysql-test/t/cast.test	2005-09-22 15:59:10 -07:00
@@ -143,4 +143,9 @@
 select cast(repeat('1',20) as unsigned);
 select cast(repeat('1',20) as signed);
 
+#
+# Bug #13344: cast of large decimal to signed int not handled correctly
+#
+select cast(1.0e+300 as signed int);
+
 # End of 4.1 tests