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Bug #28250: Run-Time Check Failure #3 - The variable 'value' is

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being used without being def

Inside method Item_func_unsigned::val_int, the variable value 
can be returned without being initialized when the CAST argument
is of type DECIMAL and has a NULL value. This gives a run-time 
error when building debug binaries using Visual C++ 2005.

Solution: Initialize value to 0


mysql-test/t/cast.test:
  bug#28250: There is no need for an extra test case, but we
  recognize that this one catches the bug.
sql/item_func.cc:
  bug#28250: initialization of value.
This commit is contained in:
unknown
2007-05-23 14:43:06 +02:00
parent 1e33cfb36a
commit 8998080a37
2 changed files with 9 additions and 1 deletions
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8
mysql-test/t/cast.test
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@ -10,7 +10,13 @@ select cast(-5 as unsigned) -1, cast(-5 as unsigned) + 1;
select ~5, cast(~5 as signed);
explain extended select ~5, cast(~5 as signed);
select cast(5 as unsigned) -6.0;
select cast(NULL as signed), cast(1/0 as signed);
select cast(NULL as signed), cast(1/0 as signed);
#
# Bug #28250: Run-Time Check Failure #3 - The variable 'value' is being used
# without being def
#
# The following line causes Run-Time Check Failure on
# binaries built with Visual C++ 2005
select cast(NULL as unsigned), cast(1/0 as unsigned);
select cast("A" as binary) = "a", cast(BINARY "a" as CHAR) = "A";
select cast("2001-1-1" as DATE), cast("2001-1-1" as DATETIME);