use crate::alloc::{GlobalAlloc, Layout, System}; #[stable(feature = "alloc_system_type", since = "1.28.0")] unsafe impl GlobalAlloc for System { #[inline] unsafe fn alloc(&self, _layout: Layout) -> *mut u8 { 0 as *mut u8 } #[inline] unsafe fn alloc_zeroed(&self, _layout: Layout) -> *mut u8 { 0 as *mut u8 } #[inline] unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {} #[inline] unsafe fn realloc(&self, _ptr: *mut u8, _layout: Layout, _new_size: usize) -> *mut u8 { 0 as *mut u8 } }