gcc-5.1.1-4.fc22.x86_64

g++ -g -c -o /tmp/t -std=c++1y -O2 /tmp/t.C

t.C:

#include <tuple>

template<typename functor_type>
void invoke_lambda(functor_type &&functor)
{
	functor();
}

template<typename functor_type, typename arg_type>
void invoke_lambda(arg_type &&arg, functor_type &&functor)
{
	functor(std::forward<arg_type>(arg));
}

class conn;

class ts {
public:

	int timestamp;
};

void bar(conn *c, int timestamp)
{
}

void foo(conn *c, ts *t)
{
	invoke_lambda([tuple_conn=std::make_tuple(c), timestamp=t->timestamp]
		      {
			      invoke_lambda(tuple_conn,
					    [&]
					    (const auto &tuple_conn)
					    {
						    invoke_lambda([=]
								  {
									  bar(std::get<0>(tuple_conn),
									      timestamp);

								  });
					    });

		      });
}

Results:

/tmp/t.C: In instantiation of ‘foo(conn*, ts*)::<lambda()>::<lambda(const auto:1&)>::<lambda()> [with auto:1 = std::tuple<conn*>]’:
/tmp/t.C:37:28:   required from ‘struct foo(conn*, ts*)::<lambda()>::<lambda(const auto:1&)> [with auto:1 = std::tuple<conn*>]::<lambda()>’
/tmp/t.C:35:24:   required from ‘foo(conn*, ts*)::<lambda()>::<lambda(const auto:1&)> [with auto:1 = std::tuple<conn*>]’
/tmp/t.C:12:9:   required from ‘void invoke_lambda(arg_type&&, functor_type&&) [with functor_type = foo(conn*, ts*)::<lambda()>::<lambda(const auto:1&)>; arg_type = const std::tuple<conn*>&]’
/tmp/t.C:41:11:   required from here
/tmp/t.C:30:9: internal compiler error: in tsubst_copy, at cp/pt.c:12960
         {