Function set_modification_panic_fn 

pub unsafe fn set_modification_panic_fn(panic_fn: fn())

Sets an alternative function to be called by the Drop implementation of TempInstMut when it encounters an illegal modification.

Safety

• Changing the panic function is only allowed when no other thread is able to interact with this crate.

• The panic function must not return unless std::thread::panicking returns true.

• If the panic function causes an unwinding panic, the caller of set_modification_panic_fn assumes the responsibility that no instance or reference of TempInstMut is used across (i.e. captured in) std::panic::catch_unwind.