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-rw-r--r--boost/fusion/sequence/comparison/detail/less.hpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/boost/fusion/sequence/comparison/detail/less.hpp b/boost/fusion/sequence/comparison/detail/less.hpp
index 4957d7bfa8..1342bb1427 100644
--- a/boost/fusion/sequence/comparison/detail/less.hpp
+++ b/boost/fusion/sequence/comparison/detail/less.hpp
@@ -12,6 +12,7 @@
#include <boost/fusion/iterator/deref.hpp>
#include <boost/fusion/iterator/next.hpp>
#include <boost/fusion/iterator/equal_to.hpp>
+#include <boost/fusion/support/as_const.hpp>
namespace boost { namespace fusion { namespace detail
{
@@ -32,8 +33,9 @@ namespace boost { namespace fusion { namespace detail
static bool
call(I1 const& a, I2 const& b, mpl::false_)
{
- return *a < *b ||
- (!(*b < *a) && call(fusion::next(a), fusion::next(b)));
+ return extension::as_const(*a) < extension::as_const(*b) ||
+ (!(extension::as_const(*b) < extension::as_const(*a)) &&
+ call(fusion::next(a), fusion::next(b)));
}
template <typename I1, typename I2>