error[E0659]: `A` is ambiguous
  --> $DIR/issue-114682-1.rs:23:5
   |
LL |     A!();
   |     ^ ambiguous name
   |
   = note: ambiguous because of a conflict between a name from a glob import and a macro-expanded name in the same module during import or macro resolution
note: `A` could refer to the macro defined here
  --> $DIR/issue-114682-1.rs:7:9
   |
LL | /         pub macro A() {
LL | |             println!("non import")
LL | |         }
   | |_________^
...
LL |   mac!();
   |   ------ in this macro invocation
note: `A` could also refer to the macro imported here
  --> $DIR/issue-114682-1.rs:19:9
   |
LL | pub use m::*;
   |         ^^^^
   = help: consider adding an explicit import of `A` to disambiguate
   = note: this error originates in the macro `mac` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0659`.