diff --git a/Module.cc b/Module.cc
index e3c3bea816..215dfb3793 100644
--- a/Module.cc
+++ b/Module.cc
@@ -34,6 +34,9 @@ Module::Module(perm_string n)
       is_cell = false;
       uc_drive = UCD_NONE;
       timescale_warn_done = false;
+      time_unit = 0;
+      time_precision = 0;
+      time_from_timescale = false;
 }
 
 Module::~Module()
diff --git a/PGate.cc b/PGate.cc
index e94ead88fb..ae64a4c483 100644
--- a/PGate.cc
+++ b/PGate.cc
@@ -288,7 +288,7 @@ void PGModule::set_range(PExpr*msb, PExpr*lsb)
       lsb_ = lsb;
 }
 
-perm_string PGModule::get_type()
+perm_string PGModule::get_type() const
 {
       return type_;
 }
diff --git a/PGate.h b/PGate.h
index 8f6c4713ff..3f4cceaf06 100644
--- a/PGate.h
+++ b/PGate.h
@@ -1,7 +1,7 @@
 #ifndef __PGate_H
 #define __PGate_H
 /*
- * Copyright (c) 1998-2008 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 1998-2010 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
@@ -215,7 +215,7 @@ class PGModule  : public PGate {
 
 	// This returns the module name of this module. It is a
 	// permallocated string.
-      perm_string get_type();
+      perm_string get_type() const;
 
     private:
       perm_string type_;
diff --git a/PGenerate.cc b/PGenerate.cc
index ba6bc49b94..717b088c6e 100644
--- a/PGenerate.cc
+++ b/PGenerate.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006,2009,2010 Stephen Williams (steve@icarus.com)
+ * Copyright (c) 2006-2010 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
@@ -25,6 +25,10 @@ PGenerate::PGenerate(LexicalScope*parent, unsigned id)
 : LexicalScope(parent), id_number(id)
 {
       direct_nested_ = false;
+      scheme_type = GS_NONE;
+      loop_init = 0;
+      loop_test = 0;
+      loop_step = 0;
 }
 
 PGenerate::~PGenerate()
diff --git a/net_assign.cc b/net_assign.cc
index e9a5501aa6..f95f6dd499 100644
--- a/net_assign.cc
+++ b/net_assign.cc
@@ -41,6 +41,7 @@ NetAssign_::NetAssign_(NetNet*s)
       lwid_ = sig_->vector_width();
       sig_->incr_lref();
       more = 0;
+      turn_sig_to_wire_on_release_ = false;
 }
 
 NetAssign_::~NetAssign_()
diff --git a/net_design.cc b/net_design.cc
index d54c71db8e..84c4a55a11 100644
--- a/net_design.cc
+++ b/net_design.cc
@@ -43,6 +43,7 @@ Design:: Design()
       des_precision_ = 0;
       nodes_functor_cur_ = 0;
       nodes_functor_nxt_ = 0;
+      des_delay_sel_ = Design::TYP;
 }
 
 Design::~Design()
diff --git a/net_scope.cc b/net_scope.cc
index 71eade98f2..c9760cd0ca 100644
--- a/net_scope.cc
+++ b/net_scope.cc
@@ -300,7 +300,7 @@ NetFuncDef* NetScope::func_def()
       return func_;
 }
 
-bool NetScope::in_func()
+bool NetScope::in_func() const
 {
       return (type_ == FUNC) ? true : false;
 }
diff --git a/netlist.h b/netlist.h
index 8c1c581574..2094609426 100644
--- a/netlist.h
+++ b/netlist.h
@@ -771,7 +771,7 @@ class NetScope : public Attrib {
       unsigned get_lineno() const { return lineno_; };
       unsigned get_def_lineno() const { return def_lineno_; };
 
-      bool in_func();
+      bool in_func() const;
 	/* Is the task or function automatic. */
       void is_auto(bool is_auto__) { is_auto_ = is_auto__; };
       bool is_auto() const { return is_auto_; };
diff --git a/pform.h b/pform.h
index e6c500d24b..4d611ad8d8 100644
--- a/pform.h
+++ b/pform.h
@@ -102,7 +102,7 @@ struct net_decl_assign_t {
 /* The lgate is gate instantiation information. */
 struct lgate {
       lgate(int =0)
-      : parms(0), parms_by_name(0), lineno(0)
+      : parms(0), parms_by_name(0), file(NULL), lineno(0)
       { range[0] = 0;
         range[1] = 0;
       }
diff --git a/t-dll.cc b/t-dll.cc
index e4448d69b5..9f2b49a557 100644
--- a/t-dll.cc
+++ b/t-dll.cc
@@ -2120,7 +2120,7 @@ bool dll_target::replicate(const NetReplicate*net)
  * The assignment l-values are captured by the assignment statements
  * themselves in the process handling.
  */
-void dll_target::net_assign(const NetAssign_*)
+void dll_target::net_assign(const NetAssign_*) const
 {
 }
 
diff --git a/t-dll.h b/t-dll.h
index 9625650c55..08eac980b7 100644
--- a/t-dll.h
+++ b/t-dll.h
@@ -80,7 +80,7 @@ struct dll_target  : public target_t, public expr_scan_t {
       bool concat(const NetConcat*);
       bool part_select(const NetPartSelect*);
       bool replicate(const NetReplicate*);
-      void net_assign(const NetAssign_*);
+      void net_assign(const NetAssign_*) const;
       bool net_sysfunction(const NetSysFunc*);
       bool net_function(const NetUserFunc*);
       bool net_const(const NetConst*);
diff --git a/tgt-vhdl/vhdl_syntax.hh b/tgt-vhdl/vhdl_syntax.hh
index 9253eeff12..de3e113136 100644
--- a/tgt-vhdl/vhdl_syntax.hh
+++ b/tgt-vhdl/vhdl_syntax.hh
@@ -60,7 +60,7 @@ class vhdl_var_ref : public vhdl_expr {
 public:
    vhdl_var_ref(const string& name, const vhdl_type *type,
                 vhdl_expr *slice = NULL)
-      : vhdl_expr(type), name_(name), slice_(slice) {}
+      : vhdl_expr(type), name_(name), slice_(slice), slice_width_(0) {}
    ~vhdl_var_ref();
    
    void emit(std::ostream &of, int level) const;