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			17 lines
		
	
	
		
			566 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
		
			566 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
| #![feature(auto_traits)]
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| #![feature(negative_impls)]
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| #![allow(bare_trait_objects)]
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| 
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| auto trait Auto {}
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| 
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| fn main() {
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|     let _: Box<((Auto)) + Auto>;
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|     //~^ ERROR expected a path on the left-hand side of `+`, not `((Auto))`
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|     let _: Box<(Auto + Auto) + Auto>;
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|     //~^ ERROR expected a path on the left-hand side of `+`, not `(Auto + Auto)`
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|     let _: Box<(Auto +) + Auto>;
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|     //~^ ERROR expected a path on the left-hand side of `+`, not `(Auto)`
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|     let _: Box<(dyn Auto) + Auto>;
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|     //~^ ERROR expected a path on the left-hand side of `+`, not `(dyn Auto)`
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| }
 | 
