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			29 lines
		
	
	
		
			673 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			29 lines
		
	
	
		
			673 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
| //! Attributes producing expressions in invalid locations
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| 
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| //@ proc-macro: attr-stmt-expr.rs
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| 
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| #![feature(proc_macro_hygiene)]
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| #![feature(stmt_expr_attributes)]
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| 
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| extern crate attr_stmt_expr;
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| use attr_stmt_expr::{duplicate, no_output};
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| 
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| fn main() {
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|     let _ = #[no_output] "Hello, world!";
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|     //~^ ERROR expected expression, found end of macro arguments
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| 
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|     let _ = #[duplicate] "Hello, world!";
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|     //~^ ERROR macro expansion ignores `,` and any tokens following
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| 
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|     let _ = {
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|         #[no_output]
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|         "Hello, world!"
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|     };
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| 
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|     let _ = {
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|         #[duplicate]
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|         //~^ ERROR macro expansion ignores `,` and any tokens following
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|         "Hello, world!"
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|     };
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| }
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