From 8c7365fb368422edae610f2ef6c8f4eedfa27d3e Mon Sep 17 00:00:00 2001
From: Martin Whitaker <icarus@martin-whitaker.me.uk>
Date: Fri, 25 Mar 2011 18:55:59 +0000
Subject: [PATCH] Fix for over-enthusiastic pruning of expressions.

The minimum width for expressions containing a literal number was
being incorrectly calculated, leading to loss of information in
some circumstances.
---
 elab_expr.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/elab_expr.cc b/elab_expr.cc
index b2f741d4d..24a61469b 100644
--- a/elab_expr.cc
+++ b/elab_expr.cc
@@ -3163,7 +3163,7 @@ unsigned PENumber::test_width(Design*, NetScope*, width_mode_t&mode)
 {
       expr_type_   = IVL_VT_LOGIC;
       expr_width_  = value_->len();
-      min_width_   = 1;
+      min_width_   = expr_width_;
       signed_flag_ = value_->has_sign();
 
       if ((mode < LOSSLESS) && !value_->has_len() && !value_->is_single())