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// Test that a covariant struct does not permit the lifetime of a
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// reference to be enlarged.
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struct SomeStruct<T>(T);
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fn foo<'min,'max>(v: SomeStruct<&'min ()>)
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-> SomeStruct<&'max ()>
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where 'max : 'min
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{
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v
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//~^ ERROR lifetime may not live long enough
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}
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fn main() { }
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