X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Flanguage%2Fstats%2Fquick-cluster.c;h=946181b01a6b22e3061a4b26c961ed6f88236bd7;hb=f3eba902a0deb8e3ce93383de255f7e0d39921b5;hp=e6987f4b10b5db503a799b66665a796665407a17;hpb=32ee0e0402d6d56674f53a47d879ec5c07dabe09;p=pspp

diff --git a/src/language/stats/quick-cluster.c b/src/language/stats/quick-cluster.c
index e6987f4b10..946181b01a 100644
--- a/src/language/stats/quick-cluster.c
+++ b/src/language/stats/quick-cluster.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2011 Free Software Foundation, Inc.
+   Copyright (C) 2011, 2012 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
@@ -390,11 +390,10 @@ static void
 quick_cluster_show_centers (struct Kmeans *kmeans, bool initial, const struct qc *qc)
 {
   struct tab_table *t;
-  int nc, nr, heading_columns, currow;
+  int nc, nr, currow;
   int i, j;
   nc = qc->ngroups + 1;
   nr = qc->n_vars + 4;
-  heading_columns = 1;
   t = tab_create (nc, nr);
   tab_headers (t, 0, nc - 1, 0, 1);
   currow = 0;
@@ -549,6 +548,11 @@ cmd_quick_cluster (struct lexer *lexer, struct dataset *ds)
 		    {
 		      lex_force_int (lexer);
 		      qc.ngroups = lex_integer (lexer);
+		      if (qc.ngroups <= 0)
+			{
+			  lex_error (lexer, _("The number of clusters must be positive"));
+			  goto error;
+			}
 		      lex_get (lexer);
 		      lex_force_match (lexer, T_RPAREN);
 		    }
@@ -559,6 +563,11 @@ cmd_quick_cluster (struct lexer *lexer, struct dataset *ds)
 		    {
 		      lex_force_int (lexer);
 		      qc.maxiter = lex_integer (lexer);
+		      if (qc.maxiter <= 0)
+			{
+			  lex_error (lexer, _("The number of iterations must be positive"));
+			  goto error;
+			}
 		      lex_get (lexer);
 		      lex_force_match (lexer, T_RPAREN);
 		    }