From 5a5635358f9a1af1c5c9d11e848e3e7f636f51de Mon Sep 17 00:00:00 2001
From: Sei Lisa <sei-lisa@email.fake>
Date: Wed, 2 Jan 2019 20:40:24 +0100
Subject: [PATCH] Add an assertion where we expect sym['W'] to have a symbol

---
 lslopt/lsldeadcode.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lslopt/lsldeadcode.py b/lslopt/lsldeadcode.py
index 038ba81..e7abf62 100644
--- a/lslopt/lsldeadcode.py
+++ b/lslopt/lsldeadcode.py
@@ -428,8 +428,8 @@ class deadcode(object):
                 if sym:
                     # Mark as executed, so it isn't optimized out.
                     # Make shallow copy.
-                    # TODO: Needs more analysis to see if it's correct or not.
-                    #       (See constant_anomaly.lsl)
+                    # TODO: Should the copy be a deep copy?
+                    assert sym.get('W', False) is not False
                     new = sym['W'].copy()
                     if hasattr(new, 'orig'):
                         del new.orig