[suyjuris]

You can compromise by using abort in debug builds and std::unreachable in release builds.

[JonChesterfield]

I love it when switching debug mode on changes the control flow graph of my program. Keeps life interesting.

[gpderetta]

well, that's already the case.

[apaprocki]

The point of this is that you can control that behavior at the compiler level using different flags instead of changing the code itself (via preprocessor defines).