X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fstats%2Fdescriptives.c;h=413826cc9cdaa64c7e9b10d503f80ceae15dc57c;hb=6da9ed01e15953f12bc1ba35fbee53a7a7e46da0;hp=8efb5f1fb46209814c77baf4e9d1b499f31ee9bd;hpb=6f3865480503c571963d8a2d1af858a4d72d4e88;p=pspp

diff --git a/src/language/stats/descriptives.c b/src/language/stats/descriptives.c
index 8efb5f1fb4..413826cc9c 100644
--- a/src/language/stats/descriptives.c
+++ b/src/language/stats/descriptives.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 1997-2000, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 1997-2000, 2009-2013 Free Software Foundation, Inc.
 
    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
@@ -397,6 +397,13 @@ cmd_descriptives (struct lexer *lexer, struct dataset *ds)
             }
         }
 
+      /* It would be better to handle Z scores correctly (however we define
+         that) when TEMPORARY is in effect, but in the meantime this at least
+         prevents a use-after-free error.  See bug #38786.  */
+      if (proc_make_temporary_transformations_permanent (ds))
+        msg (SW, _("DESCRIPTIVES with Z scores ignores TEMPORARY.  "
+                   "Temporary transformations will be made permanent."));
+
       proto = caseproto_create ();
       for (i = 0; i < 1 + 2 * z_cnt; i++)
         proto = caseproto_add_width (proto, 0);
@@ -434,7 +441,8 @@ cmd_descriptives (struct lexer *lexer, struct dataset *ds)
       dsc->vars[i].moments = moments_create (dsc->max_moment);
 
   /* Data pass. */
-  grouper = casegrouper_create_splits (proc_open (ds), dict);
+  grouper = casegrouper_create_splits (proc_open_filtering (ds, z_cnt == 0),
+                                       dict);
   while (casegrouper_get_next_group (grouper, &group))
     calc_descriptives (dsc, group, ds);
   ok = casegrouper_destroy (grouper);
@@ -689,6 +697,8 @@ descriptives_trns_free (void *trns_)
   casereader_destroy (t->z_reader);
   assert((t->missing_type != DSC_LISTWISE) ^ (t->vars != NULL));
   free (t->vars);
+  free (t);
+
   return ok;
 }
 
@@ -732,11 +742,13 @@ setup_z_trns (struct dsc_proc *dsc, struct dataset *ds)
 	{
           struct dsc_z_score *z;
 	  struct variable *dst_var;
+          char *label;
 
 	  dst_var = dict_create_var_assert (dataset_dict (ds), dv->z_name, 0);
-          var_set_label (dst_var,
-                         xasprintf (_("Z-score of %s"),var_to_string (dv->v)),
-                         false);
+
+          label = xasprintf (_("Z-score of %s"),var_to_string (dv->v));
+          var_set_label (dst_var, label, false);
+          free (label);
 
           z = &t->z_scores[cnt++];
           z->src_var = dv->v;