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22 lines
570 B
Rust
22 lines
570 B
Rust
// Test that duplicate matcher binding names are caught at declaration time, rather than at macro
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// invocation time.
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#![allow(unused_macros)]
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macro_rules! foo1 {
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($a:ident, $a:ident) => {}; //~ERROR duplicate matcher binding
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($a:ident, $a:path) => {}; //~ERROR duplicate matcher binding
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}
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macro_rules! foo2 {
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($a:ident) => {}; // OK
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($a:path) => {}; // OK
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}
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macro_rules! foo3 {
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($a:ident, $($a:ident),*) => {}; //~ERROR duplicate matcher binding
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($($a:ident)+ # $($($a:path),+);*) => {}; //~ERROR duplicate matcher binding
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}
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fn main() {}
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