mirror of https://github.com/rust-lang/rust
22 lines
480 B
Rust
22 lines
480 B
Rust
// Support for legacy derive helpers is limited and heuristic-based
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// (that's exactly the reason why they are deprecated).
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//@ edition:2018
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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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use derive as my_derive;
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#[my_derive(Empty)]
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#[empty_helper] // OK
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struct S1;
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// Legacy helper detection doesn't see through `derive` renaming.
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#[empty_helper] //~ ERROR cannot find attribute `empty_helper` in this scope
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#[my_derive(Empty)]
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struct S2;
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fn main() {}
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