Mercurial > octave

diff liboctave/array/Sparse.cc @ 32045:f18da620ab4d stable

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix floating point exception when Sparse array reshaped to 0x0 (bug #64080) * Sparse.cc (reshape): Test for empty matrix (number of rows or columns equal to 0) and immediately return constructed, but unfilled, empty sparse matrix. * data.cc (Freshape): Add BIST test for bug #64080.
author Rik <rik@octave.org>
date Thu, 20 Apr 2023 18:58:57 -0700
parents 597f3ee61a48
children 39700c1ea93e
line wrap: on
line diff
--- a/liboctave/array/Sparse.cc	Tue Apr 18 11:09:17 2023 -0700
+++ b/liboctave/array/Sparse.cc	Thu Apr 20 18:58:57 2023 -0700
@@ -873,6 +873,9 @@
           octave_idx_type old_nr = rows ();
           octave_idx_type old_nc = cols ();
           retval = Sparse<T, Alloc> (new_nr, new_nc, new_nnz);
+          // Special case for empty matrices (bug #64080)
+          if (new_nr == 0 || new_nc == 0)
+            return retval;
 
           octave_idx_type kk = 0;
           retval.xcidx (0) = 0;