use alloc::alloc::{GlobalAlloc, Layout};

struct MyAllocator;

unsafe impl GlobalAlloc for MyAllocator {
    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
        panic!();
    }

    unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
        panic!();
    }
}

#[global_allocator]
static GLOBAL: MyAllocator = MyAllocator;