27 lines
497 B
Rust
27 lines
497 B
Rust
//! Check that we correctly lint procedural macros.
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extern crate proc_macro;
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use proc_macro::TokenStream;
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#[allow(dead_code)]
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fn f() {
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let _x = 3.14;
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//~^ ERROR: approximate value of `f{32, 64}::consts::PI` found
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}
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#[proc_macro]
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pub fn mybangmacro(t: TokenStream) -> TokenStream {
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t
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}
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#[proc_macro_derive(MyDerivedTrait)]
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pub fn myderive(t: TokenStream) -> TokenStream {
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t
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}
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#[proc_macro_attribute]
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pub fn myattribute(t: TokenStream, a: TokenStream) -> TokenStream {
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t
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}
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