bug fix: corrected view_map of CSMGrad with kmap != None

theano/sparse/basic.py

@@ -378,6 +378,8 @@ CSR = CSM('csr')
 class CSMGrad(gof.op.Op):
     def __init__(self, kmap=None):
         self.kmap = kmap
+        if self.kmap is None:
+            self.view_map = {0 : [1]}
 
     def __eq__(self, other):
         return type(self) == type(other) and _kmap_eq(self.kmap, other.kmap)

theano/sparse/tests/test_basic.py

@@ -211,7 +211,7 @@ class test_structureddot(unittest.TestCase):
             assert _is_dense(c)
             assert numpy.all(outvals == c)
 
-            tensor.verify_grad(None, buildgraphCSR, [kernvals,imvals])
+            tensor.verify_grad( buildgraphCSR, [kernvals,imvals])
 
 
 if __name__ == '__main__':