From 6e8c92a69c6f7abe88d98e729e06bca6ccf17d72 Mon Sep 17 00:00:00 2001
From: Peter Wu <lekensteyn@gmail.com>
Date: Tue, 6 Dec 2011 16:13:18 +0000
Subject: Fix stack corruption when using arguments (param access off by one)

---
 Variables.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'Variables.py')

diff --git a/Variables.py b/Variables.py
index 89c8501..26de704 100644
--- a/Variables.py
+++ b/Variables.py
@@ -48,7 +48,8 @@ class Variables(object):
             # XXX don't hardcode R5
             return ("R5", str(-self.local_vars[name]))
         try:
-            return ("R5", str(1 + self.param_vars.index(name)))
+            # 1 for the return address, 1 for the stored BP
+            return ("R5", str(2 + self.param_vars.index(name)))
         except ValueError:
             pass
         # lookup in the parent
-- 
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