33 lines
537 B
Rust
33 lines
537 B
Rust
#![feature(untagged_unions)]
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// Non-copy
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struct A;
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struct B;
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union U {
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a: A,
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b: B,
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}
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fn main() {
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unsafe {
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{
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let mut u = U { a: A };
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let a = u.a;
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let a = u.a; //~ ERROR use of moved value: `u.a`
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}
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{
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let mut u = U { a: A };
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let a = u.a;
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u.a = A;
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let a = u.a; // OK
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}
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{
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let mut u = U { a: A };
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let a = u.a;
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u.b = B;
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let a = u.a; // OK
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}
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}
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}
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