[Boost-commit] svn:boost r49704 - trunk/boost/type_traits

Subject: [Boost-commit] svn:boost r49704 - trunk/boost/type_traits
From: john_at_[hidden]
Date: 2008-11-12 13:13:37

Author: johnmaddock
Date: 2008-11-12 13:13:36 EST (Wed, 12 Nov 2008)
New Revision: 49704
URL: http://svn.boost.org/trac/boost/changeset/49704

Log:
Fix 32-bit Linux alignment_of failure.
Text files modified: 
   trunk/boost/type_traits/intrinsics.hpp |     7 ++++++-                                 
   1 files changed, 6 insertions(+), 1 deletions(-)

Modified: trunk/boost/type_traits/intrinsics.hpp
==============================================================================
--- trunk/boost/type_traits/intrinsics.hpp	(original)
+++ trunk/boost/type_traits/intrinsics.hpp	2008-11-12 13:13:36 EST (Wed, 12 Nov 2008)
@@ -148,7 +148,12 @@
 #   define BOOST_IS_CLASS(T) __is_class(T)
 #   define BOOST_IS_ENUM(T) __is_enum(T)
 #   define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T)
-#   define BOOST_ALIGNMENT_OF(T) __alignof__(T)
+#   if !defined(unix) || defined(__LP64__)
+      // GCC sometimes lies about alignment requirements
+      // of type double on 32-bit unix platforms, use the
+      // old implementation instead in that case:
+#     define BOOST_ALIGNMENT_OF(T) __alignof__(T)
+#   endif
 
 #   define BOOST_HAS_TYPE_TRAITS_INTRINSICS
 #endif