compile error with clang and libc++

[khegeman]

 clang++ --version
Ubuntu clang version 3.4-1~exp1 (branches/release_34) (based on LLVM 3.4)

CMAKE_CXX_FLAGS=-stdlib=libc++  

-- cotire 1.4.1 loaded.
-- Configuring done
-- Generating done
-- Build files have been written to: /build/clang_bandit
[  5%] Building CXX object CMakeFiles/bandit-specs.dir/specs/main.cpp.o
In file included from /bandit/specs/main.cpp:1:
In file included from /build/clang_bandit/cotire/bandit-specs_CXX_prefix.hxx:4:
In file included from /bandit/specs/specs.h:4:
In file included from /bandit/bandit/bandit.h:5:
In file included from /usr/include/c++/v1/functional:465:
In file included from /usr/include/c++/v1/memory:599:
/usr/include/c++/v1/tuple:320:11: fatal error: rvalue reference to type '<lambda at /bandit/bandit/grammar.h:111:42>' cannot bind to lvalue of type
      '<lambda at /bandit/bandit/grammar.h:111:42>'
        : value(__t.get())
          ^     ~~~~~~~~~
/usr/include/c++/v1/tuple:444:8: note: in instantiation of member function 'std::__1::__tuple_leaf<0, <lambda at /bandit/bandit/grammar.h:111:42> &&, false>::__tuple_leaf' requested here
struct __tuple_impl<__tuple_indices<_Indx...>, _Tp...>
       ^
/usr/include/c++/v1/functional:1278:26: note: in instantiation of member function 'std::__1::__function::__func<<lambda at /bandit/bandit/grammar.h:111:42>, std::__1::allocator<<lambda at
      /bandit/bandit/grammar.h:111:42> >, void ()>::__func' requested here
            ::new (__f_) _FF(_VSTD::move(__f));
                         ^
/bandit/bandit/grammar.h:111:42: note: in instantiation of function template specialization 'std::__1::function<void ()>::function<<lambda at /bandit/bandit/grammar.h:111:42> >' requested
      here
      assertion_adapter.adapt_exceptions([&](){

[khegeman]

this was a libc++ bug.

http://llvm.org/bugs/show_bug.cgi?id=17798

I tested with a newer release of libc++ and this error is gone.

[joakimkarlsson]

Thanks for reporting, and for the follow-up!