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			8 lines
		
	
	
		
			146 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
			
		
		
	
	
			8 lines
		
	
	
		
			146 B
		
	
	
	
		
			Rust
		
	
	
	
	
	
macro_rules! foo {
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    ($e: expr) => { 'x: for _ in 0..1 { $e } }
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}
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pub fn main() {
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    foo!(break 'x); //~ ERROR use of undeclared label `'x`
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}
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