Hello, The following code fails to compile with gcc 4.5 or 4.6: #include <boost/foreach.hpp> template <typename> void f() { int A[6]; BOOST_FOREACH(auto&& x, A) ; } void g() { f<int>(); } The error is: test.cpp: In function 'void f() [with <template-parameter-1-1> = int]': test.cpp:14:12: instantiated from here test.cpp:6:5: error: invalid initialization of reference of type 'int&&' from expression of type 'int' Interestingly, the error goes away if I make f() a non-template function. It also compiles fine with gcc 4.4. The native range-based for version, however, compiles fine with gcc 4.6 (which is the only version to support it): #include <boost/foreach.hpp> template <typename> void f() { int A[6]; for(auto&& x : A) ; } void g() { f<int>(); } What is going on here? Is this a Boost issue or a gcc issue? Thanks, Nate.