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			19 lines
		
	
	
		
			343 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			19 lines
		
	
	
		
			343 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
| //@ force-host
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| //@ no-prefer-dynamic
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| 
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| #![crate_type = "proc-macro"]
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| 
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| extern crate proc_macro;
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| 
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| use proc_macro::TokenStream;
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| 
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| #[proc_macro_derive(A)]
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| pub fn foo(input: TokenStream) -> TokenStream {
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|     input
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| }
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| 
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| #[proc_macro_derive(A)] //~ ERROR the name `A` is defined multiple times
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| pub fn bar(input: TokenStream) -> TokenStream {
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|     input
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| }
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