diff --git a/expr_synth.cc b/expr_synth.cc
index 057f905a1..fa0a69f2c 100644
--- a/expr_synth.cc
+++ b/expr_synth.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1999-2012 Stephen Williams (steve@icarus.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -1006,8 +1006,6 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)
 
       if (sub == 0) return 0;
 
-      NetNet*off = 0;
-
 	// Detect the special case that there is a base expression and
 	// it is constant. In this case we can generate fixed part selects.
       if (NetEConst*base_const = dynamic_cast<NetEConst*>(base_)) {
@@ -1106,7 +1104,7 @@ NetNet* NetESelect::synthesize(Design *des, NetScope*scope, NetExpr*root)
 	// actual part/bit select. Generate a NetPartSelect object to
 	// do the work, and replace "sub" with the selected output.
       if (base_ != 0) {
-	    off = base_->synthesize(des, scope, root);
+	    NetNet*off = base_->synthesize(des, scope, root);
 
 	    NetPartSelect*sel = new NetPartSelect(sub, off, expr_width(),
 	                                          base_->has_sign());
diff --git a/link_const.cc b/link_const.cc
index 467c30a13..258839bb1 100644
--- a/link_const.cc
+++ b/link_const.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2000-2012 Stephen Williams (steve@icarus.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -35,7 +35,6 @@ bool Nexus::drivers_constant() const
 	    return true;
 
       for (const Link*cur = first_nlink() ; cur  ;  cur = cur->next_nlink()) {
-	    const NetNet*sig;
 	    Link::DIR cur_dir;
 
 	    cur_dir = cur->get_dir();
@@ -56,6 +55,7 @@ bool Nexus::drivers_constant() const
 		 outside world. */
 
 	    if (cur_dir == Link::PASSIVE) {
+		  const NetNet*sig;
 
 		  const NetPins*obj = cur->get_obj();
 		  const NetObj*as_obj = dynamic_cast<const NetObj*>(obj);
diff --git a/vvp/arith.cc b/vvp/arith.cc
index 83b831c76..f69b3c4e3 100644
--- a/vvp/arith.cc
+++ b/vvp/arith.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001-2011 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2001-2012 Stephen Williams (steve@icarus.com)
  *
  *    This source code is free software; you can redistribute it
  *    and/or modify it in source code form under the terms of the GNU
@@ -46,7 +46,7 @@ void vvp_arith_::dispatch_operand_(vvp_net_ptr_t ptr, vvp_vector4_t bit)
 	    op_b_ = bit;
 	    break;
 	  default:
-	    fprintf(stderr, "Unsupported port type %d.\n", port);
+	    fprintf(stderr, "Unsupported port type %u.\n", port);
 	    assert(0);
       }
 }
diff --git a/vvp/compile.cc b/vvp/compile.cc
index a7edb6ce3..6dd05a13f 100644
--- a/vvp/compile.cc
+++ b/vvp/compile.cc
@@ -1517,7 +1517,7 @@ void compile_resolver(char*label, char*type, unsigned argc, struct symb_s*argv)
       } else {
 	    fprintf(stderr, "invalid resolver type: %s\n", type);
 	    compile_errors += 1;
-            free(net);
+            delete net;
       }
 
       if (core) {