mirror of https://github.com/rust-lang/rust
21 lines
455 B
Rust
21 lines
455 B
Rust
// skip-filecheck
|
|
// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
|
|
//! Tests that we can propagate into places that are projections into unions
|
|
//@ compile-flags: -Zunsound-mir-opts -C debuginfo=full
|
|
fn val() -> u32 {
|
|
1
|
|
}
|
|
|
|
// EMIT_MIR union.main.DestinationPropagation.diff
|
|
fn main() {
|
|
// CHECK-LABEL: fn args(
|
|
// CHECK: {{_.*}} = Un { us: const 1_u32 };
|
|
union Un {
|
|
us: u32,
|
|
}
|
|
|
|
let un = Un { us: val() };
|
|
|
|
drop(unsafe { un.us });
|
|
}
|