macro-ty-params.rs

macro_rules! m {
    ($p1: path) => {
        #[derive($p1)] struct U;
    }
}

macro_rules! foo { () => () }

fn main() {
    foo::<T>!(); //~ ERROR generic arguments in macro path
    foo::<>!(); //~ ERROR generic arguments in macro path
    m!(Default<>);
    //~^ ERROR unexpected generic arguments in path
}

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// Paths
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// Generic Arguments
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// Macro Invocation
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// Entities
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// Scopes
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// Binding Scopes
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// Generic Parameter Scope
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// Item Scope
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// Label Scope
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// Self Scope
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// Textual Macro Scope
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// Scope Hierarchy
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// Namespaces
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// Preludes
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// Shadowing
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// Resolution
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// Path Resolution
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// Path Expression Resolution