src/test/compile-fail/no-patterns-in-args.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 extern {
  12     fn f1(mut arg: u8); //~ ERROR patterns aren't allowed in foreign function declarations
  13                         //~^ NOTE pattern not allowed in foreign function
  14                         //~| NOTE this is a recent error
  15     fn f2(&arg: u8); //~ ERROR patterns aren't allowed in foreign function declarations
  16                      //~^ NOTE pattern not allowed in foreign function
  17     fn f3(arg @ _: u8); //~ ERROR patterns aren't allowed in foreign function declarations
  18                         //~^ NOTE pattern not allowed in foreign function
  19                         //~| NOTE this is a recent error
  20     fn g1(arg: u8); // OK
  21     fn g2(_: u8); // OK
  22     // fn g3(u8); // Not yet
  23 }
  24
  25 type A1 = fn(mut arg: u8); //~ ERROR patterns aren't allowed in function pointer types
  26                            //~^ NOTE this is a recent error
  27 type A2 = fn(&arg: u8); //~ ERROR patterns aren't allowed in function pointer types
  28                         //~^ NOTE this is a recent error
  29 type B1 = fn(arg: u8); // OK
  30 type B2 = fn(_: u8); // OK
  31 type B3 = fn(u8); // OK
  32
  33 fn main() {}