Terminal interface: Remove support for the ncurses library.

[pspp] / src / language / stats / graph.c

diff --git a/src/language/stats/graph.c b/src/language/stats/graph.c
index 424091f9c5c9516816dca0fb1c29671420738141..da74afdef4e82c4eb8784bbb538b8757af8df3a1 100644 (file)
--- a/src/language/stats/graph.c
+++ b/src/language/stats/graph.c
@@ -245,6 +245,8 @@ parse_function (struct lexer *lexer, struct graph *graph)
       for (v = 0; v < ag_func[i].arity; ++v)
        {
          graph->dep_vars[v] = parse_variable (lexer, graph->dict);
+         if (! graph->dep_vars[v])
+           goto error;
        }
 
       if (!lex_force_match (lexer, T_RPAREN))
@@ -328,7 +330,13 @@ show_histogr (const struct graph *cmd, struct casereader *input)
 {
   struct histogram *histogram;
   struct ccase *c;
-
+  
+  if (cmd->es[0].cc <= 0)
+    {
+      casereader_destroy (input);
+      return;
+    }
+  
   {
     /* Sturges Rule */
     double bin_width = fabs (cmd->es[0].minimum - cmd->es[0].maximum)