mirror of https://github.com/rust-lang/rust
47 lines
1.0 KiB
Rust
47 lines
1.0 KiB
Rust
//@ aux-build:weird-hygiene.rs
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#![feature(stmt_expr_attributes)]
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#![feature(proc_macro_hygiene)]
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extern crate weird_hygiene;
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use weird_hygiene::*;
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macro_rules! other {
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($tokens:expr) => {
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macro_rules! call_it {
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($outer_ident:ident) => {
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macro_rules! inner {
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() => {
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$outer_ident;
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}
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}
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}
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}
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#[derive(WeirdDerive)]
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enum MyEnum {
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Value = (stringify!($tokens + hidden_ident), 1).1 //~ ERROR cannot find
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}
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inner!();
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}
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}
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macro_rules! invoke_it {
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($token:expr) => {
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#[recollect_attr] {
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$token;
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hidden_ident //~ ERROR cannot find
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}
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}
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}
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fn main() {
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// `other` and `invoke_it` are both macro_rules! macros,
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// so it should be impossible for them to ever see `hidden_ident`,
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// even if they invoke a proc macro.
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let hidden_ident = "Hello1";
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other!(50);
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invoke_it!(25);
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}
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