From bc7ddafc93f1b30fa39e7f47f62b41ae3ed6a07b Mon Sep 17 00:00:00 2001
From: Paul Marinescu <paul.marinescu@imperial.ac.uk>
Date: Mon, 8 Dec 2014 01:07:52 +0000
Subject: Fix overshift check

Shifting by bitwidth-1 is valid
---
 lib/Solver/STPBuilder.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/Solver/STPBuilder.cpp')

diff --git a/lib/Solver/STPBuilder.cpp b/lib/Solver/STPBuilder.cpp
index 34ce0ede..6d7dd8b7 100644
--- a/lib/Solver/STPBuilder.cpp
+++ b/lib/Solver/STPBuilder.cpp
@@ -283,7 +283,7 @@ ExprHandle STPBuilder::constructAShrByConstant(ExprHandle expr,
 
   if (shift==0) {
     return expr;
-  } else if (shift>=width-1) {
+  } else if (shift>=width) {
     return bvZero(width); // Overshift to zero
   } else {
     return vc_iteExpr(vc,
-- 
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