# HG changeset patch
# User David Grundberg <davidg@cs.umu.se>
# Date 1258555854 -3600
# Node ID 737624cb75601d5d0ee9001f2bb53bbcc1d06ca4
# Parent  6748616e2f8b90b3428928729c4d38f0468790a6
list_in_columns: Don't SIGFPE when given empty first argument

diff --git a/liboctave/ChangeLog b/liboctave/ChangeLog
--- a/liboctave/ChangeLog
+++ b/liboctave/ChangeLog
@@ -1,3 +1,8 @@
+2009-11-18  David Grundberg  <davidg@cs.umu.se>
+
+       * str-vec.cc (string_vector::list_in_columns): Avoid crash on
+       empty arguments from list_in_columns.
+
 2009-11-18  Jaroslav Hajek  <highegg@gmail.com>
 
 	* Sparse.h (read_sparse_matrix): Fix order of tests and reads. 
diff --git a/liboctave/str-vec.cc b/liboctave/str-vec.cc
--- a/liboctave/str-vec.cc
+++ b/liboctave/str-vec.cc
@@ -197,6 +197,14 @@
   octave_idx_type max_name_length = 0;
   octave_idx_type total_names = length ();
 
+  if (total_names == 0)
+    {
+      // List empty, remember to end output with a newline.
+
+      os << "\n";
+      return os;
+    }
+
   for (octave_idx_type i = 0; i < total_names; i++)
     {
       octave_idx_type name_length = elem (i).length ();