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f364011955
- use feature_err to report unstable expr_2021 - Update downlevel expr_2021 diagnostics Co-authored-by: León Orell Valerian Liehr <me@fmease.dev>
12 lines
198 B
Rust
12 lines
198 B
Rust
//@ compile-flags: --edition=2024 -Z unstable-options
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macro_rules! m {
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($e:expr_2021) => { //~ ERROR: fragment specifier `expr_2021` is unstable
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$e
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};
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}
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fn main() {
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m!(());
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}
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