Applied patch: http://newton.ex.ac.uk/teaching/CDHW/Electronics2/userguide/patches10.txt

This patch fix a bug that make spice crash if the "where" command is issued
when there are no unconvered nodes to report. While I never had such problem in ngspice,I have applied this, because this version of the function make the output of "where" better.

src/frontend/where.c

@@ -18,10 +18,28 @@ com_where(void)
 {
 	char	*msg;
 
+	/*CDHW typing where with no current circuit caused crashes CDHW*/
+    if (!ft_curckt) {
+      fprintf(cp_err, "There is no current circuit\n");
+	  return; }
+	else if (ft_curckt->ci_ckt != "") {
+      fprintf(cp_err, "No unconverged node found.\n");
+	  return;
+	}
+	msg = (*ft_sim->nonconvErr)((void *) (ft_curckt->ci_ckt), 0);
+
+	printf("%s", msg);
+
+
+
+
+/*
 	if (ft_curckt) {
 	    msg = (*ft_sim->nonconvErr)((void *) (ft_curckt->ci_ckt), 0);
 	    fprintf(cp_out, "%s", msg);
 	} else {
 	    fprintf(cp_err, "Error: no circuit loaded.\n");
 	}
+
+*/
 }