Create an allocator module with a dummy allocator

src/allocator.rs

@@ -0,0 +1,14 @@
+use alloc::alloc::{GlobalAlloc, Layout};
+use core::ptr::null_mut;
+
+pub struct Dummy;
+
+unsafe impl GlobalAlloc for Dummy {
+    unsafe fn alloc(&self, _layout: Layout) -> *mut u8 {
+        null_mut()
+    }
+
+    unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {
+        panic!("dealloc should be never called")
+    }
+}

src/lib.rs

@@ -9,6 +9,7 @@ extern crate alloc;
 
 use core::panic::PanicInfo;
 
+pub mod allocator;
 pub mod gdt;
 pub mod interrupts;
 pub mod memory;