rust/tests/compile-fail/transmute_fat.rs

16 lines
506 B
Rust

// This should fail even without validation
// compile-flags: -Zmir-emit-validate=0
fn main() {
#[cfg(target_pointer_width="64")]
let bad = unsafe {
std::mem::transmute::<&[u8], [u8; 16]>(&[1u8])
};
#[cfg(target_pointer_width="32")]
let bad = unsafe {
std::mem::transmute::<&[u8], [u8; 8]>(&[1u8])
};
let _ = bad[0] + bad[bad.len()-1]; //~ ERROR constant evaluation error
//~^ NOTE a raw memory access tried to access part of a pointer value as raw bytes
}