PSPP-BUG: Bug report

[Joe St Sauver]

Hi,

FYI:

$ pspp < univ-utc_time.psp > univ_utc_time.out
Assertion failed: (ft->n_valid > 0), function calc_percentiles, file 
src/language/stats/frequencies.c, line 373.
******************************************************
You have discovered a bug in PSPP.  Please report this
to address@hidden  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:     Assertion Failure/Abort
version:             GNU pspp 0.8.4 (Tue Jan 27 01:16:25 UTC 2015).
host_system:         x86_64-apple-darwin14.0.0
build_system:        x86_64-apple-darwin14.0.0
locale_dir:          /opt/local/share/locale
compiler version:    4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.56)
******************************************************
Abort trap: 6

Syntax file:

data list list file='utc_time-data-1M.txt' / datetime (dtime)
frequencies / variables=datetime / format=dfreq

Sample data file excerpt:

2015-05-12 22:11:23.202105998
2015-05-12 22:11:23.202166080
2015-05-12 22:11:23.208201885
2015-05-12 22:11:23.208303928
2015-05-12 22:11:23.208345890
2015-05-12 22:11:23.208384037