Updated boost to v1.55.0

[rsem.git] / boost / smart_ptr / detail / operator_bool.hpp

diff --git a/boost/smart_ptr/detail/operator_bool.hpp b/boost/smart_ptr/detail/operator_bool.hpp
index 842a05d02bc20b1d1a616c9b283d0e3ef368061f..8ae1527e7ccaec77e3a8b218b02448ec319da37a 100644 (file)
--- a/boost/smart_ptr/detail/operator_bool.hpp
+++ b/boost/smart_ptr/detail/operator_bool.hpp
@@ -1,14 +1,21 @@
 //  This header intentionally has no include guards.
 //
-//  Copyright (c) 2001-2009 Peter Dimov
+//  Copyright (c) 2001-2009, 2012 Peter Dimov
 //
 //  Distributed under the Boost Software License, Version 1.0.
 //  See accompanying file LICENSE_1_0.txt or copy at
 //  http://www.boost.org/LICENSE_1_0.txt
 
-#if ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
+#if !defined( BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS ) && !defined( BOOST_NO_CXX11_NULLPTR )
 
-    operator bool () const
+    explicit operator bool () const BOOST_NOEXCEPT
+    {
+        return px != 0;
+    }
+
+#elif ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, < 0x570) ) || defined(__CINT__)
+
+    operator bool () const BOOST_NOEXCEPT
     {
         return px != 0;
     }
@@ -21,7 +28,7 @@
 
     typedef void (*unspecified_bool_type)( this_type*** );
 
-    operator unspecified_bool_type() const // never throws
+    operator unspecified_bool_type() const BOOST_NOEXCEPT
     {
         return px == 0? 0: unspecified_bool;
     }
@@ -31,18 +38,18 @@
     ( defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 304) ) || \
     ( defined(__SUNPRO_CC) && BOOST_WORKAROUND(__SUNPRO_CC, <= 0x590) )
 
-    typedef T * (this_type::*unspecified_bool_type)() const;
+    typedef element_type * (this_type::*unspecified_bool_type)() const;
 
-    operator unspecified_bool_type() const // never throws
+    operator unspecified_bool_type() const BOOST_NOEXCEPT
     {
         return px == 0? 0: &this_type::get;
     }
 
 #else
 
-    typedef T * this_type::*unspecified_bool_type;
+    typedef element_type * this_type::*unspecified_bool_type;
 
-    operator unspecified_bool_type() const // never throws
+    operator unspecified_bool_type() const BOOST_NOEXCEPT
     {
         return px == 0? 0: &this_type::px;
     }
@@ -50,7 +57,7 @@
 #endif
 
     // operator! is redundant, but some compilers need it
-    bool operator! () const // never throws
+    bool operator! () const BOOST_NOEXCEPT
     {
         return px == 0;
     }