Cast variable before cloning, so test value gets casted

theano/scan_module/scan_utils.py

@@ -73,11 +73,13 @@ def safe_new(x, tag='', dtype=None):
             # want to avoid the convoluted logic that checks for cuda
             # ndarrays
             pass
+
+    # Cast x if needed. If x has a test value, this will also cast it.
+    if dtype and x.dtype != dtype:
+        x = x.astype(dtype)
+
     nw_x = x.type()
-    if dtype and nw_x.dtype != dtype:
-        nw_x = nw_x.astype(dtype).type()
     nw_x.name = nw_name
-
     # Preserve test values so that the 'compute_test_value' option can be used.
     # The test value is deep-copied to ensure there can be no interactions
     # between test values, due to inplace operations for instance. This may