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15 lines
359 B
Rust
15 lines
359 B
Rust
//@ error-pattern: attempted to define built-in macro more than once
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#![feature(rustc_attrs)]
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#[rustc_builtin_macro]
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macro_rules! unknown { () => () } //~ ERROR cannot find a built-in macro with name `unknown`
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#[rustc_builtin_macro]
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macro_rules! line { () => () } //~ NOTE previously defined here
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fn main() {
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line!();
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std::prelude::v1::line!();
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}
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