Created attachment 1455858 [details]
Test case to reproduce issue

Description of problem:
C++ code does not compile.

Version-Release number of selected component (if applicable):
g++ (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5).

Steps to Reproduce:
1. Download test.cpp attachment
2. Run command: scl enable devtoolset-7 'bash'
3. Compile the attachment: g++ test.cpp

Actual results:
test.cpp: In instantiation of ‘constexpr Combination<FRUIT, SPICE>::Combination(SPICE&&, ARGS&& ...) [with ARGS = {Pepper}; FRUIT = Apple; SPICE = Pepper]’:
test.cpp:35:13:   required from ‘constexpr MyCombination::MyCombination(ARGS&& ...) [with ARGS = {Apple}]’
test.cpp:47:29:   required from here
test.cpp:18:29: error: no matching function for call to ‘Apple::Apple(Pepper)’
     , SPICE(std::move(spice))
...

Expected results:
Should compile without errors or warnings as is the case with g++ (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28): g++ -std=c++11 test.cpp