Some combination of Ipopt segfaults with clang 6 c++17
The CI segfaults when running the quadraticipopttest with clang 6 c++17. Hence I temporarily deactivated the test for this combination in ca17537d
The CI segfaults when running the quadraticipopttest with clang 6 c++17. Hence I temporarily deactivated the test for this combination in ca17537d