Macro high_mem_utils::unreachable_debug

macro_rules! unreachable_debug {
    () => { ... };
    ($e:expr) => { ... };
}

This macro panics with the given message with debug_assertions on and call unreachable_unchecked when off.

Safety

You should use this macro for code that must not reach.But all the cases where can are not handled and will be handled on release or otherwise the responsability of do it passed to another caller,via unsafe interfaces.