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			12 lines
		
	
	
		
			159 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			12 lines
		
	
	
		
			159 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
| //@ check-pass
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| 
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| #![feature(with_negative_coherence)]
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| 
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| use std::ops::DerefMut;
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| 
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| trait Foo {}
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| impl<T: DerefMut> Foo for T {}
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| impl<U> Foo for &U {}
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| 
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| fn main() {}
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