Hack to make Composite Ops compare equal when theano.config has changed

theano/compile/debugmode.py

@@ -23,29 +23,35 @@ from theano.compile.mode import Mode, register_mode
 
 AddConfigVar('DebugMode.patience',
         "Optimize graph this many times to detect inconsistency",
-        IntParam(10, lambda i: i > 0))
+        IntParam(10, lambda i: i > 0),
+        in_c_key=False)
 
 AddConfigVar('DebugMode.check_c',
         "Run C implementations where possible",
-        BoolParam(True))
+        BoolParam(True),
+        in_c_key=False)
 
 AddConfigVar('DebugMode.check_py',
         "Run Python implementations where possible",
-        BoolParam(True))
+        BoolParam(True),
+        in_c_key=False)
 
 AddConfigVar('DebugMode.check_finite',
         "True -> complain about NaN/Inf results",
-        BoolParam(True))
+        BoolParam(True),
+        in_c_key=False)
 
 AddConfigVar('DebugMode.check_strides',
         ("Check that Python- and C-produced ndarrays have same strides.  "
             "On difference: (0) - ignore, (1) warn, or (2) raise error"),
-        IntParam(1, lambda i: i in (0,1,2)))
+        IntParam(1, lambda i: i in (0,1,2)),
+        in_c_key=False)
 
 AddConfigVar('DebugMode.warn_input_not_reused',
         ("Generate a warning when the destroy_map or view_map tell that an op work inplace, but the op did not reuse the input for its output."
          ),
-        BoolParam(True))
+        BoolParam(True),
+        in_c_key=False)
 
 def is_valid_check_preallocated_output_param(param):
     if not isinstance(param, str):

theano/scalar/basic.py

@@ -2062,7 +2062,15 @@ class Composite(ScalarOp):
 #TODO: What no_recycling is used for? What I need to put their?
 #        no_recycling = []
         self._cmodule_key = gof.CLinker.cmodule_key_(self.env, [])
-        self._hashval = hash(self._cmodule_key)
+        # Remove the config md5 from _hashval
+        # This is a temporary fix so that _hashval does not change when
+        # the Op is pickled and unpickled.
+        cmkey = list(self._cmodule_key)
+        cmkey1 = list(cmkey[1])
+        assert isinstance(cmkey1[3], str) and cmkey1[3].startswith('md5:')
+        del cmkey1[3]
+        cmkey[1] = tuple(cmkey1)
+        self._hashval = hash(tuple(cmkey))
 
     def __hash__(self):
         return self._hashval