52 lines
1.1 KiB
Rust
52 lines
1.1 KiB
Rust
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// run-pass
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// revisions: mir thir
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// [thir]compile-flags: -Z thir-unsafeck
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#[derive(Copy, Clone)]
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#[allow(dead_code)]
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struct Pie {
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slices: u8,
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size: u8,
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}
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union Foo {
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#[allow(dead_code)]
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bar: i8,
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baz: Pie
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}
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fn main() {
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let u = Foo { bar: 5 };
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let (Some(Foo { bar: _ }) | None) = Some(u);
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let u = Foo { bar: 6 };
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let (Some(Foo { bar: _ }) | Some(Foo { bar: _ }) | None) = Some(u);
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unsafe {
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let u = Foo { bar: 7 };
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let (Foo { bar } | Foo { bar }) = u;
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assert_eq!(bar, 7)
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}
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let u = Foo { bar: 8 };
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match Some(u) {
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Some(Foo { bar: _ }) => 3,
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None => 4,
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};
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let u = Foo { bar: 9 };
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unsafe { //[mir]~ WARNING unnecessary `unsafe` block
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match u {
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Foo { baz: Pie { .. } } => {},
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};
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}
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let u = Foo { bar: 10 };
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unsafe { //[mir]~ WARNING unnecessary `unsafe` block
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match u {
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Foo { baz: Pie { slices: _, size: _ } } => {},
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};
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}
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let u = Foo { bar: 11 };
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match u {
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Foo { baz: _ } => {},
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};
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}
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