Fix execption problem with Alloc().

theano/tensor/basic.py

@@ -2780,13 +2780,14 @@ class Alloc(gof.Op):
             }
 
             // This function takes care of broadcasting
-            PyArray_CopyInto(%(zz)s, %(vv)s);
+            if (PyArray_CopyInto(%(zz)s, %(vv)s) == -1)
+              %(fail)s
             """ % dict(vv=vv, ndim=ndim, zz=zz, fail=fail)
 
         return code
 
     def c_code_cache_version(self):
-        return (1,)
+        return (2,)
 
     def infer_shape(self, node, input_shapes):
         return [node.inputs[1:]]