PSPP-BUG: AGGREGATE segfaults with TEMPORARY if OUTFILE is active file

[Frans Houweling]

******************************************************
You have discovered a bug in PSPP.  Please report this
to bug-gnu-pspp@gnu.org.  Please include this entire
message, *plus* several lines of output just above it.
For the best chance at having the bug fixed, also
include the syntax file that triggered it and a sample
of any data file used for input.
proximate cause:     Segmentation Violation
version:             GNU pspp 1.6.2-gee221b
host_system:         x86_64-pc-linux-gnu
build_system:        x86_64-pc-linux-gnu
locale_dir:          /usr/local/share/locale
compiler version:    12.2.0
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Segmentation fault

Syntax:

DATA LIST FREE /quakes (F2.0).
BEGIN DATA
1 2 3 4 5 6 7 8 9 10
END DATA.
TEMPORARY.
SELECT IF quakes GT 5.
AGGREGATE OUTFILE = *  /nrecs=NU.
LIST.