mirror of https://github.com/rust-lang/rust
28 lines
639 B
Rust
28 lines
639 B
Rust
#![crate_type = "lib"]
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extern crate my_crate;
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pub fn g() {} // (a)
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#[macro_export]
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macro_rules! unhygienic_macro {
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() => {
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// (1) unhygienic: depends on `my_crate` in the crate root at the invocation site.
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::my_crate::f();
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// (2) unhygienic: defines `f` at the invocation site (in addition to the above point).
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use my_crate::f;
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f();
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g(); // (3) unhygienic: `g` needs to be in scope at use site.
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$crate::g(); // (4) hygienic: this always resolves to (a)
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}
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}
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#[allow(unused)]
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fn test_unhygienic() {
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unhygienic_macro!();
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f(); // `f` was defined at the use site
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}
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