1 use crate::alloc::{GlobalAlloc, Layout, System};
2 use crate::ptr::null_mut;
4 #[stable(feature = "alloc_system_type", since = "1.28.0")]
5 unsafe impl GlobalAlloc for System {
7 unsafe fn alloc(&self, _layout: Layout) -> *mut u8 {
12 unsafe fn alloc_zeroed(&self, _layout: Layout) -> *mut u8 {
17 unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {}
20 unsafe fn realloc(&self, _ptr: *mut u8, _layout: Layout, _new_size: usize) -> *mut u8 {