mirror of https://github.com/rust-lang/rust
41 lines
687 B
Rust
41 lines
687 B
Rust
#![feature(decl_macro)]
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#![allow(unused)]
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mod ok {
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macro mac_trait_item($method: ident) {
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fn $method();
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}
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trait Tr {
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mac_trait_item!(method);
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}
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macro mac_trait_impl() {
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impl Tr for u8 { // OK
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fn method() {} // OK
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}
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}
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mac_trait_impl!();
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}
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mod error {
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macro mac_trait_item() {
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fn method();
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}
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trait Tr {
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mac_trait_item!();
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}
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macro mac_trait_impl() {
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impl Tr for u8 { //~ ERROR not all trait items implemented, missing: `method`
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fn method() {} //~ ERROR method `method` is not a member of trait `Tr`
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}
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}
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mac_trait_impl!();
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}
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fn main() {}
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