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macro_rules! m {
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($p1: path) => {
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#[derive($p1)] struct U;
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}
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}
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macro_rules! foo { () => () }
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fn main() {
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foo::<T>!(); //~ ERROR generic arguments in macro path
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foo::<>!(); //~ ERROR generic arguments in macro path
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m!(Default<>); //~ ERROR unexpected generic arguments in path
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}
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