compiler/rustc_error_codes/src/error_codes/E0044.md

   1 You cannot use type or const parameters on foreign items.
   2
   3 Example of erroneous code:
   4
   5 ```compile_fail,E0044
   6 extern "C" { fn some_func<T>(x: T); }
   7 ```
   8
   9 To fix this, replace the generic parameter with the specializations that you
  10 need:
  11
  12 ```
  13 extern "C" { fn some_func_i32(x: i32); }
  14 extern "C" { fn some_func_i64(x: i64); }
  15 ```