1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
// edition:2018 // This test is similar to `ambiguity.rs`, but with macros defining local items. #![allow(non_camel_case_types)] use std::io; //~^ ERROR `std` is ambiguous macro_rules! m { () => { mod std { pub struct io; } } } m!(); fn main() {}