File: issue-79242.rs

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rustc 1.89.0%2Bdfsg1-1~bpo13%2B2
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extern crate proc_macro;

use proc_macro::TokenStream;

#[proc_macro]
pub fn dummy(input: TokenStream) -> TokenStream {
    // Iterate to force internal conversion of nonterminals
    // to `proc_macro` structs
    for _ in input {}
    TokenStream::new()
}