X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fstats%2Fregression.q;h=ca1f67da0e00849f11898d7c95c0fe1b84724f67;hb=2fa50c14e54abe7095b53f6a790f19d90f20987b;hp=c41f9e7895e7e05595331b767994a725cf417914;hpb=fe8dc2171009e90d2335f159d05f7e6660e24780;p=pspp

diff --git a/src/language/stats/regression.q b/src/language/stats/regression.q
index c41f9e7895..ca1f67da0e 100644
--- a/src/language/stats/regression.q
+++ b/src/language/stats/regression.q
@@ -792,6 +792,7 @@ identify_indep_vars (const struct variable **indep_vars,
     }
   return n_indep_vars;
 }
+
 static double
 fill_covariance (gsl_matrix *cov, struct covariance *all_cov, 
 		 const struct variable **vars,
@@ -804,12 +805,15 @@ fill_covariance (gsl_matrix *cov, struct covariance *all_cov,
   size_t dep_subscript;
   size_t *rows;
   const gsl_matrix *ssizes;
-  gsl_matrix *cm;
   const gsl_matrix *mean_matrix;
   const gsl_matrix *ssize_matrix;
   double result = 0.0;
   
-  cm = covariance_calculate_unnormalized (all_cov);
+  gsl_matrix *cm = covariance_calculate_unnormalized (all_cov);
+
+  if ( cm == NULL)
+    return 0;
+
   rows = xnmalloc (cov->size1 - 1, sizeof (*rows));
   
   for (i = 0; i < n_all_vars; i++)
@@ -959,8 +963,10 @@ run_regression (struct casereader *input, struct cmd_regression *cmd,
 				 dict_get_weight (dict), MV_ANY);
 
   reader = casereader_clone (input);
-  reader = casereader_create_filter_missing (reader, v_variables, n_variables,
+  reader = casereader_create_filter_missing (reader, all_vars, n_all_vars,
 					     MV_ANY, NULL, NULL);
+
+
   for (; (c = casereader_read (reader)) != NULL; case_unref (c))
     {
       covariance_accumulate (cov, c);