# HG changeset patch
# User John W. Eaton <jwe@octave.org>
# Date 1354568550 18000
# Node ID 911a6ad10e9cbb8d1e394337074ca938e1dcf323
# Parent  77cf1c84db132ec2724f3770bdddc7191debfc8f
fix incorrect sparse array allocation introduced in cda76da34693

* Sparse.h (Sparse<T>::SparseRep::SparseRep (octave_idx_type,
octave_idx_type, octave_idx_type)): Don't allocate D or R arrays if NZ
is 0.  Initialize all elements of C to 0.

diff --git a/liboctave/array/Sparse.h b/liboctave/array/Sparse.h
--- a/liboctave/array/Sparse.h
+++ b/liboctave/array/Sparse.h
@@ -87,12 +87,12 @@
       }
 
     SparseRep (octave_idx_type nr, octave_idx_type nc, octave_idx_type nz = 0)
-      : d (new T [nz]), r (new octave_idx_type [nz]),
+      : d (nz > 0 ? new T [nz] : 0),
+      r (nz > 0 ? new octave_idx_type [nz] : 0),
       c (new octave_idx_type [nc+1]), nzmx (nz), nrows (nr),
       ncols (nc), count (1)
       {
-        c[nc] = nz;
-        for (octave_idx_type i = 0; i < nc; i++)
+        for (octave_idx_type i = 0; i < nc + 1; i++)
           c[i] = 0;
       }