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16 lines
311 B
Rust
16 lines
311 B
Rust
extern crate proc_macro;
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#[proc_macro_derive(Foo)]
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//~^ ERROR: only usable with crates of the `proc-macro` crate type
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pub fn foo(a: proc_macro::TokenStream) -> proc_macro::TokenStream {
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a
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}
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// Issue #37590
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#[proc_macro_derive(Foo)]
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//~^ ERROR: attribute cannot be used on
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pub struct Foo {
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}
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fn main() {}
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