mirror of https://github.com/rust-lang/rust
23 lines
766 B
Rust
23 lines
766 B
Rust
// Regression test for issue #64803 (initial attribute resolution can disappear later).
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//@ aux-build:test-macros.rs
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#[macro_use]
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extern crate test_macros;
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mod m {
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use test_macros::Empty;
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}
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use m::Empty; //~ ERROR derive macro import `Empty` is private
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// To resolve `empty_helper` we need to resolve `Empty`.
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// During initial resolution `use m::Empty` introduces no entries, so we proceed to `macro_use`,
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// successfully resolve `Empty` from there, and then resolve `empty_helper` as its helper.
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// During validation `use m::Empty` introduces a `Res::Err` stub, so `Empty` resolves to it,
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// and `empty_helper` can no longer be resolved.
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#[empty_helper] //~ ERROR cannot find attribute `empty_helper` in this scope
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#[derive(Empty)]
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struct S;
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fn main() {}
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