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12 lines
440 B
Rust
12 lines
440 B
Rust
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// Minimized test for <https://github.com/rust-lang/rust/issues/123461>.
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struct Unconstrained<T>(T);
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fn main() {
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unsafe { std::mem::transmute::<_, ()>(|o_b: Unconstrained<_>| {}) };
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//~^ ERROR type annotations needed
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// We unfortunately don't check `Wf(Unconstrained<_>)`, so we won't
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// hit an ambiguity error before checking the transmute. That means
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// we still may have inference variables in our transmute src.
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}
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