fixes that Fred suggested

theano/sandbox/cuda/tests/test_opt.py

@@ -69,9 +69,10 @@ def test_gpualloc():
 
 
 def test_gpuspecifyshape():
-    x = theano.shared(numpy.ones(3,dtype='float32'), 'x')
+    x = cuda.shared_constructor(numpy.ones(3,dtype='float32'), 'x')
     m = theano.tensor.specify_shape(x + numpy.float32(1), (3,))
-    f = theano.function([], updates={x:m * numpy.float32(2)})
+    f = theano.function([], updates={x:m * numpy.float32(2)},
+                        mode=mode_with_gpu)
     l = f.maker.env.toposort()
     assert not numpy.any([isinstance(x.op, cuda.HostFromGpu) for x in l])