rust/tests/compile-fail-fullmir/undefined_byte_read.rs

10 lines
306 B
Rust

// This should fail even without validation
// compile-flags: -Zmir-emit-validate=0
fn main() {
let v: Vec<u8> = Vec::with_capacity(10);
let undef = unsafe { *v.get_unchecked(5) };
let x = undef + 1; //~ ERROR: attempted to read undefined bytes
panic!("this should never print: {}", x);
}