src/test/ui/macros/macro-path-prelude-shadowing.rs

   1 // aux-build:macro-in-other-crate.rs
   2
   3 #![feature(decl_macro)]
   4
   5 macro_rules! add_macro_expanded_things_to_macro_prelude {() => {
   6     #[macro_use]
   7     extern crate macro_in_other_crate;
   8 }}
   9
  10 add_macro_expanded_things_to_macro_prelude!();
  11
  12 mod m1 {
  13     fn check() {
  14         inline!(); // OK. Theoretically ambiguous, but we do not consider built-in attributes
  15                    // as candidates for non-attribute macro invocations to avoid regressions
  16                    // on stable channel
  17     }
  18 }
  19
  20 mod m2 {
  21     pub mod std {
  22         pub macro panic() {}
  23     }
  24 }
  25
  26 mod m3 {
  27     use m2::*; // glob-import user-defined `std`
  28     fn check() {
  29         std::panic!(); //~ ERROR `std` is ambiguous
  30     }
  31 }
  32
  33 fn main() {}