#![allow(deprecated)] // This test is adapted from https://github.com/rust-lang/miri/issues/1340#issue-600900312. fn main() { // Deliberately using `mem::uninitialized` to make sure that despite all the mitigations, we consider this UB. let _val: f32 = unsafe { std::mem::uninitialized() }; //~^ ERROR: constructing invalid value at .value: encountered uninitialized bytes, but expected initialized bytes }