compiler/rustc_error_codes/src/error_codes/E0603.md

   1 A private item was used outside its scope.
   2
   3 Erroneous code example:
   4
   5 ```compile_fail,E0603
   6 mod SomeModule {
   7     const PRIVATE: u32 = 0x_a_bad_1dea_u32; // This const is private, so we
   8                                             // can't use it outside of the
   9                                             // `SomeModule` module.
  10 }
  11
  12 println!("const value: {}", SomeModule::PRIVATE); // error: constant `PRIVATE`
  13                                                   //        is private
  14 ```
  15
  16 In order to fix this error, you need to make the item public by using the `pub`
  17 keyword. Example:
  18
  19 ```
  20 mod SomeModule {
  21     pub const PRIVATE: u32 = 0x_a_bad_1dea_u32; // We set it public by using the
  22                                                 // `pub` keyword.
  23 }
  24
  25 println!("const value: {}", SomeModule::PRIVATE); // ok!
  26 ```