Corrected __call__ of Function class to look at the flag to know if it needs

theano/compile/function_module.py

@@ -531,18 +531,25 @@ class Function(object):
         for k, arg in kwargs.iteritems():
             self[k] = arg
 
+
+        if ( not hasattr(self, '_check_for_aliased_inputs') or
+            self._check_for_aliased_inputs):
             ## Collect aliased inptus among the storage space
             args_share_memory = []
             for i in xrange(len(self.input_storage)):
-            if self.input_storage[i].storage[0] != None:
+                if isinstance(self.input_storage[i].storage[0],
+                              numpy.ndarray):
                     is_aliased = False
                     for j in xrange(len(args_share_memory)):
+                        for k in args_share_memory[j]:
                             if numpy.may_share_memory(
                                     self.input_storage[i].storage[0] ,
-                            self.input_storage[args_share_memory[j][0]].storage[0]):
+                                    self.input_storage[k].storage[0]):
                                 is_aliased = True
                                 args_share_memory[j] += [i]
                                 break
+                        if is_aliased:
+                                      break
 
                     if not is_aliased:
                         args_share_memory.append( [i] )
@@ -551,8 +558,9 @@ class Function(object):
                 for group in args_share_memory:
                     if len(group) > 1:
                         # see if any of these arguments are mutable
-                    mutable = numpy.any( [self.maker.inputs[idx].mutable for
-                                        idx in group])
+                        mutable = numpy.any( [(
+                            self.maker.inputs[idx].mutable or
+                            self.maker.inputs[idx].borrow ) for idx in group ])
                         # copy all but the first
                         for idx in group[1:]:
                             self.input_storage[i].storage[0] = copy.copy(