mirror of https://github.com/rust-lang/rust
30 lines
669 B
Rust
30 lines
669 B
Rust
#![feature(allocator_api)]
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use std::alloc::{AllocError, Allocator, Layout, System};
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use std::ptr::NonNull;
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use std::boxed::Box;
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struct Alloc {}
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unsafe impl Allocator for Alloc {
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fn allocate(&self, layout: Layout) -> Result<NonNull<[u8]>, AllocError> {
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System.allocate(layout)
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}
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unsafe fn deallocate(&self, ptr: NonNull<u8>, layout: Layout) {
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System.deallocate(ptr, layout)
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}
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}
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fn use_value(_: u32) {}
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fn main() {
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let alloc = Alloc {};
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let boxed = Box::new_in(10, alloc.by_ref());
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let theref = Box::leak(boxed);
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drop(alloc);
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//~^ ERROR cannot move out of `alloc` because it is borrowed
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use_value(*theref)
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}
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