rust/tests/mir-opt/dest-prop/union.rs

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// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
//! Tests that we can propagate into places that are projections into unions
// compile-flags: -Zunsound-mir-opts
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fn val() -> u32 {
1
}
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// EMIT_MIR union.main.DestinationPropagation.diff
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fn main() {
union Un {
us: u32,
}
let un = Un { us: val() };
drop(unsafe { un.us });
}