44 lines
1.0 KiB
Rust
44 lines
1.0 KiB
Rust
// edition:2018
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#![feature(decl_macro)]
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mod m1 {
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// Non-exported legacy macros are treated as `pub(crate)`.
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macro_rules! legacy_macro { () => () }
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use legacy_macro as _; // OK
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pub(crate) use legacy_macro as _; // OK
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pub use legacy_macro as _; //~ ERROR `legacy_macro` is only public within the crate, and cannot be re-exported outside
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}
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mod m2 {
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macro_rules! legacy_macro { () => () }
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#[allow(non_camel_case_types)]
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type legacy_macro = u8;
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// Legacy macro imports don't prevent names from other namespaces from being imported.
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use legacy_macro as _; // OK
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}
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mod m3 {
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macro legacy_macro() {}
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fn f() {
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macro_rules! legacy_macro { () => () }
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// Legacy macro imports create ambiguities with other names in the same namespace.
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use legacy_macro as _; //~ ERROR `legacy_macro` is ambiguous
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}
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}
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mod exported {
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// Exported legacy macros are treated as `pub`.
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#[macro_export]
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macro_rules! legacy_macro { () => () }
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pub use legacy_macro as _; // OK
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}
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fn main() {}
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