From ada80545faf6a0c0d871909f9e50e0f426b46ed8 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Sat, 2 Nov 2013 21:13:01 +0100
Subject: Behavior should be identical now to rev. 0b4a64ac6adbd6 (next:
 testing before constfold fixes)

---
 frontends/ast/genrtlil.cc | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'frontends/ast/genrtlil.cc')

diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc
index a4e01899c..ff4841ec4 100644
--- a/frontends/ast/genrtlil.cc
+++ b/frontends/ast/genrtlil.cc
@@ -570,6 +570,8 @@ void AstNode::detectSignWidthWorker(int &width_hint, bool &sign_hint)
 				this_width = range->range_left - range->range_right + 1;
 		} else
 			width_hint = std::max(width_hint, this_width);
+		if (!id2ast->is_signed)
+			sign_hint = false;
 		break;
 
 	case AST_TO_SIGNED:
-- 
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