Reproducing shogun read-file-bug

create-test-files.sh

while true; do echo "0"; done |head -n 5242882 >test-5242882.csv
head -n 5242881 test-5242882.csv >test-5242881.csv

wc -l test*csv
# 5242881 test-5242881.csv
# 5242882 test-5242882.csv

ls -la test*csv
-rw-rw-r-- 1 tklein tklein 10485762 Jun 29 21:44 test-5242881.csv
-rw-rw-r-- 1 tklein tklein 10485764 Jun 29 21:44 test-5242882.csv

./read-csv-file test-5242881.csv 
# cols: 5242881, rows: 1
# 34.24user 0.09system 0:34.39elapsed 99%CPU (0avgtext+0avgdata 67272maxresident)k

./read-csv-file test-5242882.csv 
# cols: 5242883, rows: 1
# 34.22user 0.09system 0:34.36elapsed 99%CPU (0avgtext+0avgdata 67272maxresident)k

read-csv-file.cpp

cat read-svmlight-file.cpp 
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * Written (W) 2014 Thoralf Klein <thoralf@fischlustig.de>
 */

#include <stdio.h>
#include <stdlib.h>

#include <shogun/base/init.h>
#include <shogun/lib/SGMatrix.h>
#include <shogun/io/CSVFile.h>

using namespace shogun;

int main(int argc, char *argv[])
{
        init_shogun_with_defaults();

        {
                SGMatrix<float64_t> matrix;
                CCSVFile* test_file = new CCSVFile(argv[1]);

                matrix.load(test_file);
                printf("cols: %d, rows: %d\n", matrix.num_cols, matrix.num_rows);

                SG_UNREF(test_file);
        }

        exit_shogun();
        return 0;
}