mirror of https://github.com/rust-lang/rust
30 lines
637 B
Rust
30 lines
637 B
Rust
//@ build-pass
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#![feature(allocator_api)]
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#![allow(unused_must_use)]
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use std::alloc::Allocator;
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struct BigAllocator([usize; 2]);
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unsafe impl Allocator for BigAllocator {
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fn allocate(
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&self,
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_: std::alloc::Layout,
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) -> Result<std::ptr::NonNull<[u8]>, std::alloc::AllocError> {
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todo!()
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}
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unsafe fn deallocate(&self, _: std::ptr::NonNull<u8>, _: std::alloc::Layout) {
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todo!()
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}
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}
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fn main() {
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Box::new_in((), &std::alloc::Global);
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Box::new_in((), BigAllocator([0; 2]));
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generic_function(0);
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}
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fn generic_function<T>(val: T) {
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*Box::new_in(val, &std::alloc::Global);
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}
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