X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Flanguage%2Fstats%2Ffactor.c;h=d50d6ad3fdf2c5b6eb6c86bbbe3e3044a893f4ac;hb=add3ba666ddc4f88fbf0934184c82e35c0787795;hp=a2a8e5df037a15f0a67361d079002d7f70bc33e7;hpb=5f68c60b8283f6a410de20f927e9b12792ea58b3;p=pspp

diff --git a/src/language/stats/factor.c b/src/language/stats/factor.c
index a2a8e5df03..d50d6ad3fd 100644
--- a/src/language/stats/factor.c
+++ b/src/language/stats/factor.c
@@ -1694,6 +1694,12 @@ do_factor (const struct cmd_factor *factor, struct casereader *r)
 
   idata->cov = covariance_calculate (cov);
 
+  if (idata->cov == NULL)
+    {
+      msg (MW, _("The dataset contains no complete observations. No analysis will be performed."));
+      goto finish;
+    }
+
   var_matrix = covariance_moments (cov, MOMENT_VARIANCE);
   mean_matrix = covariance_moments (cov, MOMENT_MEAN);
   idata->n = covariance_moments (cov, MOMENT_NONE);