[BUG] fix UnravelIndex in corner cases where it returned a view without…

doc/index.txt

@@ -21,6 +21,8 @@ learning/machine learning <https://mila.umontreal.ca/en/cours/>`_ classes).
 News
 ====
 
+* 2017/09/28: IMPORTANT: `MILA will stop developing Theano <https://groups.google.com/d/msg/theano-users/7Poq8BZutbY/rNCIfvAEAwAJ>`_ and the next release (renamed to 1.0) will be the last main release.
+
 * 2017/09/20: Release of Theano 0.10.0beta3, new features and many bugfixes, release candidate to coming.
 
 * 2017/09/07: Release of Theano 0.10.0beta2, new features and many bugfixes, release candidate to coming.

theano/tensor/extra_ops.py

@@ -1218,7 +1218,12 @@ class UnravelIndex(gof.Op):
         res = np.unravel_index(indices, dims)
         assert len(res) == len(out)
         for i in xrange(len(out)):
-            out[i][0] = theano._asarray(res[i], node.outputs[0].dtype)
+            ret = theano._asarray(res[i], node.outputs[0].dtype)
+            if ret.base is not None:
+                # NumPy will return a view when it can.
+                # But we don't want that.
+                ret = ret.copy()
+            out[i][0] = ret
 
 
 def unravel_index(indices, dims, order='C', ndim=None):