Testcase failure with optimization -O2 and -O1 in gcc and llvm

[Jac1494]

Hi,
The below testcase fails when compiled with optimization.
https://github.com/boostorg/fusion/blob/develop/test/functional/invoke.cpp#L391
https://github.com/boostorg/fusion/blob/develop/test/functional/invoke.cpp#L401

like,
$g++ -O2 -I./boost_1_70_0 boost_1_70_0/libs/fusion/test/functional/invoke.cpp
$./a.out

./boost_1_70_0/libs/fusion/test/functional/invoke.cpp(391): test
'that.data == fusion::invoke(& members::data,
fusion::join(sv_obj_c_ctx,seq))' failed in function 'void
test_sequence_n(Sequence&, mpl_::int_<0>) [with Sequence =
boost::fusion::vector<>]'

./boost_1_70_0/libs/fusion/test/functional/invoke.cpp(401): test
'that.data == fusion::invoke(& members::data,
fusion::join(sv_obj_c_d_ctx,seq))' failed in function 'void
test_sequence_n(Sequence&, mpl_::int_<0>) [with Sequence =
boost::fusion::vector<>]'

./boost_1_70_0/libs/fusion/test/functional/invoke.cpp(391): test
'that.data == fusion::invoke(& members::data,
fusion::join(sv_obj_c_ctx,seq))' failed in function 'void
test_sequence_n(Sequence&, mpl_::int_<0>) [with Sequence =
boost::fusion::list<>]'

./boost_1_70_0/libs/fusion/test/functional/invoke.cpp(401): test
'that.data == fusion::invoke(& members::data,
fusion::join(sv_obj_c_d_ctx,seq))' failed in function 'void
test_sequence_n(Sequence&, mpl_::int_<0>) [with Sequence =
boost::fusion::list<>]'

4 errors detected.

$g++ --version
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-9.1.0/configure -- --enable-languages=c,c++
--disable-libquadmath --disable-libquadmath-support --disable-werror
--disable-bootstrap --enable-gold
Thread model: posix
gcc version 9.1.0 (GCC)

When analyzed further we have seen that
this is
[ boost_1_70_0/boost/fusion/functional/invocation/invoke.hpp:139 ]
trying to return local address, which is undefined behavior.
And that lead to above test-case failure.

So either we have to modify test-case to pass as reference or disable
it.
Like to know your suggestion before going ahead?