rust/tests/compile-fail/alloc/reallocate-dangling.rs

use std::alloc::{alloc, dealloc, realloc, Layout};

// error-pattern: dereferenced after this allocation got freed

fn main() {
    unsafe {
        let x = alloc(Layout::from_size_align_unchecked(1, 1));
        dealloc(x, Layout::from_size_align_unchecked(1, 1));
        let _z = realloc(x, Layout::from_size_align_unchecked(1, 1), 1);
    }
}