From 59ced23f623576370ef2a68a78ac6d408ffb8c03 Mon Sep 17 00:00:00 2001
From: Jose Rodriguez <boriel@gmail.com>
Date: Sun, 3 May 2020 23:37:53 +0200
Subject: [PATCH] Fix crash with -O3

Upon certain circumstances -O3 crashes if bb is None
---
 arch/zx48k/optimizer/basicblock.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/zx48k/optimizer/basicblock.py b/arch/zx48k/optimizer/basicblock.py
index beb990564..81a3aa1a7 100644
--- a/arch/zx48k/optimizer/basicblock.py
+++ b/arch/zx48k/optimizer/basicblock.py
@@ -330,7 +330,7 @@ def update_goes_and_comes(self):
             bb = stack.pop(0)
             while True:
                 if bb is None:
-                    DummyBasicBlock(ALL_REGS, ALL_REGS)
+                    bb = DummyBasicBlock(ALL_REGS, ALL_REGS)
 
                 if bb in bbset:
                     break