mirror of https://github.com/rust-lang/rust
24 lines
435 B
Rust
24 lines
435 B
Rust
struct NoEq;
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enum Foo {
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Bar,
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Baz,
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Qux(NoEq),
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}
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// Even though any of these values can be compared structurally, we still disallow it in a pattern
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// because `Foo` does not impl `PartialEq`.
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const BAR_BAZ: Foo = if 42 == 42 {
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Foo::Baz
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} else {
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Foo::Bar
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};
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fn main() {
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match Foo::Qux(NoEq) {
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BAR_BAZ => panic!(),
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//~^ ERROR must be annotated with `#[derive(PartialEq)]`
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_ => {}
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}
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}
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