x.indestructible -> x.tag.indestructible

compile.py

@@ -26,7 +26,7 @@ default_optimizer = _DefaultOptimizer()
         
 def _mark_indestructible(results):
     for r in results:
-        r.indestructible = True
+        r.tag.indestructible = True
 
 def linker_cls_python_and_c(env, **kwargs):
     """Use this as the linker_cls argument to Function.__init__ to compare
@@ -78,7 +78,7 @@ def std_env(inputs, outputs, disown_inputs = False):
         input.destroyed_by_user = len(env.destroyers(input)) != 0
         if not input.destroyed_by_user and not disown_inputs:
             # prevent optimizations from destroying the inputs
-            input.indestructible = True
+            input.tag.indestructible = True
     return env
 
 def std_opt(env):

gof/_test_ext.py

@@ -205,9 +205,9 @@ class _test_all(unittest.TestCase):
 
     def test_indestructible(self):
         x, y, z = inputs()
-        x.indestructible = True
+        x.tag.indestructible = True
         x = copy(x)
-        assert x.indestructible  # checking if indestructible survives the copy!
+        assert x.tag.indestructible  # checking if indestructible survives the copy!
         e = add_in_place(x, y)
         g = Env([x,y,z], [e], False)
         assert not g.consistent()
@@ -216,7 +216,7 @@ class _test_all(unittest.TestCase):
 
     def test_indestructible_through_views(self):
         x, y, z = inputs()
-        x.indestructible = True
+        x.tag.indestructible = True
         tv = transpose_view(x)
         e = add_in_place(tv, y)
         g = Env([x,y,z], [e], False)

gof/ext.py

@@ -374,7 +374,7 @@ class DestroyHandlerHelper(toolbox.Bookkeeper):
             self.dups.add(foundation)
 
         # results marked 'indestructible' must not be destroyed.
-        if getattr(foundation, 'indestructible', False) or isinstance(foundation, graph.Constant):
+        if getattr(foundation.tag, 'indestructible', False) or isinstance(foundation, graph.Constant):
             self.illegal.add(foundation)