id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9511	Non-static data member	Bjorn Reese <breese@…>	Peder Holt	"Consider the following example:

{{{
  void foo(int value) {}
  struct alpha {
    int value;
    typedef BOOST_TYPEOF(foo(value)) return_type;
  };
}}}

This example compiles just fine with g++, but with clang++ it only
works if compiled with -std=c++11, otherwise it gives the error
message below. I believe that clang is correct (this diagnostics was
[https://llvm.org/viewvc/llvm-project?view=revision&revision=154073 added] in clang 3.1.)

Is this a bug in Boost.Typeof or is it expected behavior? Is there a
workaround for it?

The error message is:

{{{
/home/breese/src/treediff/treediff/main.cpp:17:30: error: invalid use of non-static data member 'value'
    typedef BOOST_TYPEOF(foo(value)) return_type;
                             ^~~~~
/usr/local/include/boost/typeof/native.hpp:41:76: note: expanded from macro 'BOOST_TYPEOF'
#define BOOST_TYPEOF(expr) BOOST_TYPEOF_KEYWORD(boost::type_of::ensure_obj(expr))

    ^
1 error generated.
}}}
"	Bugs	closed	To Be Determined	typeof	Boost 1.54.0	Problem	invalid