From: Roland McGrath <roland@redhat.com>
Date: Wed, 21 Jul 2010 22:35:11 +0000 (-0700)
Subject: dwarf_edit vs _GLIBCXX_DEBUG
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=802e66898ab60c57812258fc71eb8be2c602054a;p=thirdparty%2Felfutils.git

dwarf_edit vs _GLIBCXX_DEBUG
---

diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index e3645bb0e..13492f9df 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-21  Roland McGrath  <roland@redhat.com>
+
+	* c++/dwarf_ref_maker (dwarf_ref_maker::seen): Add copy constructor
+	to avoid default copying of uninitialized iterator.
+
 2010-07-13  Roland McGrath  <roland@redhat.com>
 
 	* c++/dwarf_comparator (dwarf_tracker_base): Replace visit method with
diff --git a/libdw/c++/dwarf_ref_maker b/libdw/c++/dwarf_ref_maker
index cfb6c4a10..f7c7fdbbe 100644
--- a/libdw/c++/dwarf_ref_maker
+++ b/libdw/c++/dwarf_ref_maker
@@ -1,5 +1,5 @@
 /* elfutils::dwarf_ref_maker -- -*- C++ -*- template type specification
-   Copyright (C) 2009 Red Hat, Inc.
+   Copyright (C) 2009-2010 Red Hat, Inc.
    This file is part of Red Hat elfutils.
 
    Red Hat elfutils is free software; you can redistribute it and/or modify
@@ -109,6 +109,15 @@ namespace elfutils
 	: _m_known (false), _m_out (), _m_refs ()
       {}
 
+      // Copy construction only valid for initial state.
+      inline seen (const seen &other)
+	: _m_known (false), _m_out (), _m_refs ()
+      {
+	if (unlikely (other._m_known) || unlikely (!other._m_refs.empty ()))
+	  throw std::logic_error
+	    ("seen copy constructs only from default-constructed");
+      }
+
       inline void resolve ()
       {
 	for (; !_m_refs.empty (); _m_refs.pop_back ())