[Pspp-commits] [SCM] GNU PSPP branch, master, updated. v0.7.9-576-g32095bc

[Ben Pfaff]

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- Log -----------------------------------------------------------------
commit 32095bce3308fc041df4b928adbf23e26098f19d
Author: Ben Pfaff <address@hidden>
Date:   Thu Apr 25 23:03:45 2013 -0700

    FLIP: Fix use-after-free error with temporary transformations.
    
    The FLIP procedure keeps a reference to the  dictionary from before running
    a procedure and then uses that reference after calling proc_commit().  When
    temporary transformations are present, this dictionary disappears.  The
    "SPLIT FILE  - vs procedures" test triggers this issue because it uses
    FILTER, which is implemented as a temporary transformation.
    
    This commit fixes the problem by avoiding a reference to the old
    dictionary after proc_commit().
    
    Reported by John Darrington.
    Bug #38820.

-----------------------------------------------------------------------

Summary of changes:
 src/language/stats/flip.c               |   43 +++++++++++++++++-------------
 tests/language/dictionary/split-file.at |    2 +-
 2 files changed, 25 insertions(+), 20 deletions(-)


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