PSPP-BUG: [bug #38786] Use-after-free in DESCRIPTIVES with Z scores and TEMPORARY

[Ben Pfaff]

URL:
  <http://savannah.gnu.org/bugs/?38786>

                 Summary: Use-after-free in DESCRIPTIVES with Z scores and
TEMPORARY
                 Project: PSPP
            Submitted by: blp
            Submitted on: Sat Apr 20 10:47:08 2013
                Category: Syntax Parser
                Severity: 5 - Average
                  Status: In Progress
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: None
                  Effort: 0.00

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Details:

The following test case crashes with PSPP:


DATA LIST LIST NOTABLE /id abc.
BEGIN DATA.
1 3.5
2 2.0
3 2.0
4 3.5
5 3.0
6 4.0
7 5.0
END DATA.

TEMPORARY.
SELECT IF id < 7 .

DESCRIPTIVES /VAR=abc/SAVE.
LIST.


SPSS users report that it yields the following results:


      id      abc        Zabc

    1,00     3,50      ,59761
    2,00     2,00    -1,19523
    3,00     2,00    -1,19523
    4,00     3,50      ,59761
    5,00     3,00      ,00000
    6,00     4,00     1,19523
    7,00     5,00      .





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