rust/tests/compile-fail/unaligned_pointers/atomic_unaligned.rs
2020-08-18 10:19:29 +02:00

14 lines
426 B
Rust

// compile-flags: -Zmiri-symbolic-alignment-check
#![feature(core_intrinsics)]
fn main() {
// Do a 4-aligned u64 atomic access. That should be UB on all platforms,
// even if u64 only has alignment 4.
let z = [0u32; 2];
let zptr = &z as *const _ as *const u64;
unsafe {
::std::intrinsics::atomic_load(zptr);
//~^ERROR accessing memory with alignment 4, but alignment 8 is required
}
}