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const _: () = ();
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fn main() {
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a // Shouldn't suggest underscore
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//~^ ERROR: cannot find value `a` in this scope
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}
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trait Unknown {}
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#[allow(unused_imports)]
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use Unknown as _;
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fn foo<T: A>(x: T) {} // Shouldn't suggest underscore
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//~^ ERROR: cannot find trait `A` in this scope
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