From octave-maintainers-request at bevo dot che dot wisc dot edu  Thu Aug  3 00:10:58 2000
Subject: bug in printf in 2.1.31?
From: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
To: Joao Cardoso <jcardoso at inescporto dot pt>
Cc: octave-maintainers <octave-maintainers at bevo dot che dot wisc dot edu>
Date: Thu, 3 Aug 2000 00:11:42 -0500 (CDT)

On  3-Aug-2000, Joao Cardoso <jcardoso at inescporto dot pt> wrote:

| I'm not sure if this is 2.1.31 bug...
| 
| octave:1> printf("--%d--\n",[]);
| --0--
| octave:2> printf("%d\n");
| 0
| octave:3> printf("%d")
| 0ans = 1
| 
| is it? humm, I think it is.

I think it's a bug.  Please try the following patch (also checked in
to the CVS archive now, so it should show up in the anonymous CVS
archive shortly).

Thanks,

jwe

2000-08-03  John W. Eaton  <jwe at bevo dot che dot wisc dot edu>

	* oct-stream.cc (printf_value_cache::double_value): Also set
	curr_stat to conversion_error if there are no values at all.


Index: oct-stream.cc
===================================================================
RCS file: /usr/local/cvsroot/octave/src/oct-stream.cc,v
retrieving revision 1.66
diff -u -r1.66 oct-stream.cc
--- oct-stream.cc	2000/07/20 19:21:24	1.66
+++ oct-stream.cc	2000/08/03 05:08:37
 at @ -2037,7 +2037,10 @@
 {
   double retval = 0.0;
 
-  while (val_idx < n_vals)
+  if (exhausted ())
+    curr_state = conversion_error;
+
+  while (! exhausted ())
     {
       if (! data)
 	{