From: whitequark <cz@m-labs.hk>
Date: Thu, 28 Mar 2019 05:12:02 +0000 (+0000)
Subject: back.rtlil: fix off-by-one in Part legalization.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f8629917535d751100a67e1e8d6f251ac4a3db80;p=nmigen.git

back.rtlil: fix off-by-one in Part legalization.

Fixes #52.
---

diff --git a/nmigen/back/rtlil.py b/nmigen/back/rtlil.py
index 6fcd50b..b338491 100644
--- a/nmigen/back/rtlil.py
+++ b/nmigen/back/rtlil.py
@@ -571,7 +571,7 @@ class _LHSValueCompiler(_ValueCompiler):
         if isinstance(offset, ast.Const):
             return self(ast.Slice(value.value, offset.value, offset.value + value.width))
         else:
-            raise LegalizeValue(value.offset, range((1 << len(value.offset)) - 1))
+            raise LegalizeValue(value.offset, range((1 << len(value.offset))))
 
     def on_Repl(self, value):
         raise TypeError # :nocov: