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PSPP-BUG: [bug #26861] REGRESSION Crashes on alpha variables.

From: Ben Pfaff
Subject: PSPP-BUG: [bug #26861] REGRESSION Crashes on alpha variables.
Date: Tue, 14 Jul 2009 03:01:57 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/2009061319 Iceweasel/3.0.11 (Debian-3.0.11-1)

Update of bug #26861 (project pspp):

                  Status:                    None => Confirmed              
             Assigned to:                    None => jstover                


Follow-up Comment #2:

Running valgrind shows that the memory allocated on line 944 of

  lopts.get_indep_mean_std = xnmalloc (n_variables, sizeof (int));

is being accessed after the end of the allocated space in this loop spanning
line 974:

          for (i = 0; i < X->m->size2; i++)
              lopts.get_indep_mean_std[i] = 1;

and in this loop on lines 324 to 326 of linreg.c:

  for (i = 0; i < dm->m->size2; i++)
      if (opts->get_indep_mean_std[i])

My guess is that more space should be allocated, but I am hoping that you
will know for sure.

The same valgrind run also shows uninitialized data being passed to
tab_text() on line 240 of regression.q:

      tab_text (t, 1, this_row, TAB_CENTER, ds_cstr (&tstr));

but sometimes that sort of thing can be a side effect of earlier errors and
not a separate bug.


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