library/std/src/sys/alloc/zkvm.rs


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use crate::alloc::{GlobalAlloc, Layout, System};
use crate::sys::pal::abi;

#[stable(feature = "alloc_system_type", since = "1.28.0")]
unsafe impl GlobalAlloc for System {
    #[inline]
    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
        unsafe { abi::sys_alloc_aligned(layout.size(), layout.align()) }
    }

    #[inline]
    unsafe fn dealloc(&self, _ptr: *mut u8, _layout: Layout) {
        // this allocator never deallocates memory
    }
}