Hi Matthias,

Thanks for this information. 

I will try some of this with xlC v7.0, but note that I was able to compile regex v1.33 without
any modification to the code using xlC v8.  (I just sent a detailed email regarding this).



Matthias Troyer wrote:

On Jun 5, 2007, at 8:34 PM, dx wrote:

  

The incomplete class "gcc_3_2_wknd" must not be used as a qualifier.
    

This patch on boost/mpl/has_xxx.hpp helped for Boost 1.33.1: I moved  
the gcc_3_2_wknd struct outside the class scope.

Matthias


--- boost/mpl/has_xxx.hpp       2005-06-15 12:43:23.000000000 +0200
+++ /Users/troyer/Desktop/has_xxx.hpp   2007-06-12 10:36:42.000000000  
+0200
@@ -1,7 +1,6 @@
#ifndef BOOST_MPL_HAS_XXX_HPP_INCLUDED
#define BOOST_MPL_HAS_XXX_HPP_INCLUDED
-
// Copyright Aleksey Gurtovoy 2002-2004
// Copyright David Abrahams 2002-2003
//
@@ -183,21 +182,21 @@
#   else // other SFINAE-capable compilers
+    struct gcc_3_2_wknd
+    {
+        template< typename U >
+        static boost::mpl::aux::yes_tag test(
+              boost::mpl::aux::type_wrapper const volatile*
+            , boost::mpl::aux::type_wrapper* = 0
+            );
+
+        static boost::mpl::aux::no_tag test(...);
+    };
+
#   define BOOST_MPL_HAS_XXX_TRAIT_NAMED_DEF(trait, name, default_) \
template< typename T, typename fallback_ =  
boost::mpl::bool_ > \
struct trait \
{ \
-    struct gcc_3_2_wknd \
-    { \
-        template< typename U > \
-        static boost::mpl::aux::yes_tag test( \
-              boost::mpl::aux::type_wrapper const volatile* \
-            , boost::mpl::aux::type_wrapper* = 0 \
-            ); \
-    \
-        static boost::mpl::aux::no_tag test(...); \
-    }; \
-    \
      typedef boost::mpl::aux::type_wrapper t_; \
      BOOST_STATIC_CONSTANT(bool, value = \
            sizeof(gcc_3_2_wknd::test(static_cast(0))) \

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