#![feature(alloc, allocator_api)] extern crate alloc; use alloc::alloc::Global; use std::alloc::*; // error-pattern: dangling pointer was dereferenced fn main() { unsafe { let x = Global.alloc(Layout::from_size_align_unchecked(1, 1)); Global.dealloc(x, Layout::from_size_align_unchecked(1, 1)); Global.realloc(x, Layout::from_size_align_unchecked(1, 1), 1); } }