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17 lines
361 B
Rust
17 lines
361 B
Rust
#![feature(rustc_attrs)]
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macro_rules! check {
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($expr: expr) => (
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#[rustc_dummy = $expr]
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use main as _;
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);
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}
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check!("0"); // OK
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check!(0); // OK
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check!(0u8); //~ ERROR suffixed literals are not allowed in attributes
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check!(-0); //~ ERROR unexpected expression: `-0`
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check!(0 + 0); //~ ERROR unexpected expression: `0 + 0`
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fn main() {}
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