Work around broken deep copy

theano/ifelse.py

@@ -15,11 +15,12 @@ from copy import deepcopy
 from itertools import izip
 import logging
 
-from theano.gof import PureOp, Apply
+import numpy
 
 import theano.tensor
 from theano.tensor import TensorType
 from theano import gof
+from theano.gof import PureOp, Apply
 
 from theano.compile import optdb
 from theano.tensor import opt
@@ -245,11 +246,14 @@ class IfElse(PureOp):
                     else:
                         for out, outtype, t in izip(outputs, outtypes, ts):
                             compute_map[out][0] = 1
+                            val = storage_map[t][0]
                             if self.as_view:
-                                oval = storage_map[t][0]
+                                storage_map[out][0] = val
+                            # Work around broken numpy deepcopy
+                            elif type(a) in (numpy.ndarray, numpy.memmap):
+                                storage_map[out][0] = val.copy()
                             else:
-                                oval = deepcopy(storage_map[t][0])
-                            storage_map[out][0] = oval
+                                storage_map[out][0] = deepcopy(val)
                         return []
                 else:
                     ls = [1 + idx + self.n_outs for idx in xrange(self.n_outs)
@@ -261,8 +265,12 @@ class IfElse(PureOp):
                             compute_map[out][0] = 1
                             # can't view both outputs unless destroyhandler
                             # improves
-                            oval = deepcopy(storage_map[f][0])
-                            storage_map[out][0] = oval
+                            # Work around broken numpy deepcopy
+                            val = storage_map[f][0]
+                            if type(val) in (numpy.ndarray, numpy.memmap):
+                                storage_map[out][0] = val.copy()
+                            else:
+                                storage_map[out][0] = deepcopy(val)
                         return []
 
         thunk.lazy = True