rust/tests/mir-opt/issue_72181.rs

32 lines
594 B
Rust

// skip-filecheck
//@ compile-flags: -Z mir-opt-level=1
// Regression test for #72181, this ICE requires `-Z mir-opt-level=1` flags.
use std::mem;
#[derive(Copy, Clone)]
enum Never {}
union Foo {
a: u64,
b: Never,
}
// EMIT_MIR issue_72181.foo.built.after.mir
fn foo(xs: [(Never, u32); 1]) -> u32 {
xs[0].1
}
// EMIT_MIR issue_72181.bar.built.after.mir
fn bar([(_, x)]: [(Never, u32); 1]) -> u32 {
x
}
// EMIT_MIR issue_72181.main.built.after.mir
fn main() {
let _ = mem::size_of::<Foo>();
let f = [Foo { a: 42 }, Foo { a: 10 }];
let _ = unsafe { f[0].a };
}