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fn main() {}
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macro_rules! m {
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($b:block) => {
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'lab: $b; //~ ERROR cannot use a `block` macro fragment here
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unsafe $b; //~ ERROR cannot use a `block` macro fragment here
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|x: u8| -> () $b; //~ ERROR cannot use a `block` macro fragment here
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}
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}
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fn foo() {
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m!({});
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}
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